Commonly used NMN Insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient. Insulating paper is mainly used for low-voltage motor in the slot, slot and interphase insulation, in addition to other than the transformer or other electrical insulation between the layers.
mica tape for cable in the electrical equipment, the potential can be separated from the charged part of the different. Insulation paper material has a high insulation resistance and pressure strength, and to avoid leakage, breakdown and other accidents. Secondly, NMN insulation paper material heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics.

Insulation test method

With the nature of the relationship between the structure and properties of electrical insulating board, through a variety of analysis and testing methods, the microstructure and macroscopic structure linked. To study the characteristics of insulating materials, and its corresponding series of comprehensive properties.
With the rapid development of industry, the requirements of electrical equipment is getting higher and higher, to improve the motor stand-alone capacity, miniaturization of capacitors and high performance, are the development trend of electrical equipment. As the polyimide glass fiber directly determines the service life of electrical equipment and its advanced nature, therefore, in order to improve the development of insulating materials, opened up a new way, and the development of electrical insulation test technology, but also for the insulation technology research and application of the conditions The
Insulation materials on the test method according to the scope of application, is divided into general test methods, special test methods and application of test methods. In order to make the test results of insulating materials comparable to each other, no matter what the test method, require the technical requirements of the test method and operation of a unified, standardized, equipment, equipment, stereotypes. Any kind of test method should be easy to implement, and can be used in the required characteristics of the comparison.

anti static plastic sheet materials in many occasions, to withstand the role of a variety of mechanical stress, a constant, vibrating, thermal expansion and contraction cycle. These stresses can cause creep damage or fatigue damage.
DMD insulation paper material moisture will increase the conductivity, increase the loss. Water also dissolves many substances and accelerates the various chemical reactions that lead to aging. Acid, ozone, etc. can also lead to chemical aging. For some insulating paper materials, tree branches may occur at very low electric field due to the presence of moisture (see solid dielectric breakdown). In addition, in the hot zone, insulating paper materials will be subject to a variety of microbial damage, the so-called microbial aging.
In the outdoor use of phenolic paper sheet materials, often by direct sunlight, under the action of ultraviolet light will occur aging. In the nuclear reactor, X-ray devices used in the insulating paper material by radiation, will occur aging.

g10 fiberglass tube with excellent flexibility and flexibility, and good dielectric and chemical resistance, suitable for motors, electrical appliances, meters, radio and other equipment, wiring insulation and mechanical protection.
The conductor structure of the insulated tube has two kinds of cable type and guide rod type. Through the cable using the transformer cable directly through the casing, easy to install. When the working current is greater than 600 amps, wear cable structure is more difficult to install, the general use of pole structure.
epoxy fiberglass tube often oil or gas as insulating medium, generally made of transformer casing or circuit breaker casing, commonly used in the following 35 kV voltage level. Insulated tube conductor and porcelain sets of the cavity, filled with transformer oil, from the radial insulation. When the voltage exceeds 35 kV, set the conductor on the conductor or envelope cable to strengthen the insulation. Mainly used for ultra-high voltage transformers and circuit breakers.
The use of insulating pipe can also greatly reduce the corrosion of equipment and other accessories such as corrosion damage, but also to extend the working life of the equipment out of a force.

In simple terms DMD insulating paper is a layer of polyester film coated with adhesive, one side for the polyester fiber non-woven composite, calendering from a composite insulation products, generally referred to as DMD.
DMD insulation paper good performance are: high mechanical strength, good dielectric properties and high heat resistance, Y series motor is the stereotypes of insulation materials, in the small and medium-sized motor slot insulation, inter-turn and interlayer laminated mica sheet, Insulated heart and transformer insulation has been widely used.

High temperature insulation materials of the four patience

High temperature fire resistant cables tape in the automotive parts, semiconductor industry, aerospace industry, petrochemical industry, machinery industry, medical industry, electronic appliances, etc. are widely used, mainly because it has the following patience:
1, high temperature performance: glass transition temperature up to 143C, melting point of 343C, filled with GF or CF, the heat distortion temperature of up to 315C or more, long-term use temperature of 260C.
2, hydrolysis resistance: long-term high temperature steam and hot water immersion is still able to maintain good mechanical properties, all resin resistance to hydrolysis of better varieties.
3, chemical resistance: In addition to high concentrations of concentrated sulfuric acid and other strong oxidizing acid erosion, high temperature insulation material has similar to the resistance of PTFE resin, and in a variety of chemical reagents can completely retain its mechanical properties, Is a more excellent anti-corrosion materials.
4, resistance to radiation and weather resistance: insulation transformer pressboard on a variety of radiation has excellent resistance, can withstand γ radiation and maintain its various characteristics, can be applied to a variety of harsh environments.

DMD insulation cable paper is used as cable, coil and other electrical equipment, insulation materials. In addition to a good insulation properties and mechanical strength, but also have their own characteristics. In addition, we can observe the law, to determine the quality of insulating paper.
First of all, look at the description of DMD insulation paper, see insulation resistance, leakage current and other insulation characteristics of the parameters, because these parameters are used to determine the dielectric material insulation performance of the main parameters, when the insulating paper impurities and moisture content, The conductivity will increase, resulting in increased leakage current value.
DMD insulation paper products in a variety of transformers (including open ventilation dry, casting coil and liquid type), can have a variety of applications: wire winding, insulation, segment and box insulation, winding end Packing, partition and bar.
In open-air dry-type transformers, DMD insulation paper can greatly improve the design of such transformers, reduce electrical losses, improve standby capacity, increase safety and reliability, and reduce the amount of steel conductor and core, thus reducing size, cost.

Insulation material industry will also be a new step

electrical insulating board as a basic material, a wide range of applications, such as the national economic lifeline of the power industry, its development and high-performance insulation materials are closely related. Insulation material is to ensure that electrical equipment, especially power equipment can be reliable, lasting and safe operation of the key material, its level will directly affect the power industry development level and quality of operation. And it plays a very important role in improving the overall level of national industry and promoting the stable and rapid development of national economy.
With the economic development, China's transmission line of the highest voltage level will be increased from 500kV to 750kV or 1000kV, and the transmission line voltage level for each step up, power equipment insulation system should be a corresponding increase. There is no high-performance insulation materials to ensure that from the power generation, power transmission to all the electricity system is likely to occur local power grid instability, serious will make the entire power grid paralyzed. Therefore, in the protection of power generation, power transmission, electrical equipment operation reliability and stability, the advanced nature of insulation, stability has a very important significance.
For the defense, the military equipment in the power, control, communications, radar and other systems need insulation materials, to develop new military equipment, must also have a new type of insulating material for the pilot. Such as nuclear submarines require the use of anti-salt spray, moisture, mildew, radiation-resistant anti static plastic sheet, such as aerospace aircraft need high dimensional stability, low temperature, radiation-resistant insulation materials. If the insulating material can not meet the harsh conditions of these harsh use of the environment, will lead to military equipment in many important systems can not function properly.

Characteristics of 3240 Epoxy Plate and Its Application

As a widely used material, epoxy board in a variety of circuits have a wide range of applications. This is concerned, it is necessary to talk about the application of a wider range of 3240 epoxy board, and it is a kind of electric glass cloth impregnated with epoxy resin, dried, hot pressed from the material, which has yellow, white, green Points, at room temperature 130 ℃ also has a high mechanical strength, but also in the dry, wet state of transformer pressboard is very good, can be flame retardant, electrical, electronic and other industries in the use of insulating structure parts. In addition, 3240 epoxy board also has the following characteristics:
Synthesis: is a special non-alkaline glass fiber cloth impregnated with epoxy phenolic resin, after baking, hot and thus made.
Thickness: Under normal circumstances 0.5 ~ 50mm, can also be required to produce 50 ~ 150mm thick plate.
Performance: mechanical and dielectric properties are relatively high, and heat resistance and moisture resistance are better, and a good mechanical processing, heat-resistant grade is B, can be stamping. After curing the epoxy resin system has excellent mechanical properties, medium temperature under the machine high strength, high humidity electrical stability under the good.
Electrical: After curing the epoxy resin system is a high dielectric properties, resistance to surface leakage, resistance to arc of the excellent polyimide glass fiber.
Uses: machinery, electronics, electrical use. Applicable to machinery, electrical, electronics, electrical and other fields. Also used for insulation processing parts, or processed into various types of insulation accessories, equipment, such as insulation components.

Analysis on Industrial Chain Structure of CCL and Insulating Materials Industry

As an intermediate application of products, CCL and bakelite electrical insulation board industry is also limited by the upstream and downstream industry constraints. In general, if the upper and lower industries have a greater volatility, will have an impact on the development of our industry. So, for these two closely related industries, now the development of the status quo is what?
 First, the upstream industry development status quo
Often, we are exposed to the upstream industry for glass fiber cloth, epoxy resin, electrolytic copper foil and other industries, the industry's products related to glass fiber cloth, copper foil, alumina and epoxy resin / modified resin. In the case of economic fluctuations, but also on the impact of raw material prices, which also affected the varying degrees of CCL and insulation materials production progress.
Second, the downstream industry development status
Our downstream industry mainly PCB industry, LED industry and mica insulation sheets, rail transportation and other industries. Our products are widely used in computer, communications, consumer electronics, industrial / medical, military, semiconductors and automobiles. The printed circuit boards are widely used in the production of printed circuit boards. And other industries, almost involving all electronic information products. Among them, the computer, communications and consumer electronics is the three main applications, accounting for the PCB industry output value of about 70%. In addition, all kinds of insulating materials are directly used in the production of insulation assembly, terminal customers include electrical and electronic, instrumentation, computer, communications, consumer electronics and transportation and other fields.

What are the key factors in determining the performance of insulating materials?

Various types of NMN Insulating material are often used in various circuit facilities. However, for different areas of use, the performance of the selected insulating material is different. So what is the key factor in the performance of a constant insulating material?
 First, the breakdown voltage, electrical strength: in a strong electric field under the destruction of insulating materials, insulation ladder loss of insulation properties lead to conductive state, known as breakdown. The breakdown voltage is called the breakdown voltage. The electrical strength is the breakdown of the voltage at the time of breakdown under the specified conditions and the distance between the two electrodes serving the external voltage, that is, the breakdown voltage of the unit thickness. For insulating materials, the general breakdown voltage, electrical strength of the value of the higher the better.
Second, the ignition resistance: With the increasing application of insulating materials, the requirements of its fire points are also getting higher and higher. Many manufacturers are beginning to use a variety of ways, and constantly improve the resistance of crepe paper tubes. The higher the ignition resistance, the security will be better.
Third, the arc resistance: in the provisions of the implementation of the conditions, the insulation material to withstand the arc along the surface of the ability to touch. The use of interchangeable high-pressure small current, by high pressure in the arc between the two electrodes caused by moving, so that the surface of the insulating material to the conductive layer of the time required to determine the arc resistance of mica insulation tape. In general, the greater the time value, the better the arc resistance.

Why the insulation temperature of different insulation materials will be different?

For different grades of diamond dotted paper, the ultimate operating temperature will be different. Therefore, in many electrical installation, also need to take into account the entire circuit can withstand the maximum temperature conditions. When there are special circumstances, some important materials can withstand high temperatures, but also to measure the stability of the entire electrical device key. For the insulation of several common insulation class, like the A-class limit operating temperature of 105 ℃, but its maximum allowable temperature is only 90 ℃. The reason why these two temperature values ​​will be different, mainly due to the following reasons:
    1, thermometer method. The measurement results reflect the local surface temperature of the winding insulation. This number is averaged about 15 ° C lower than the actual maximum temperature of the winding insulation, the "hottest". The law is the simplest, in the medium and small motor field application of the most extensive. For low-resistance windings, this method is more accurate than the resistance method. As the mercury thermometer in the alternating magnetic field due to eddy current loss heat, so the use of alcohol in the AC motor thermometer.
    2, resistance method. The measurement results reflect the average value of the entire winding copper temperature. The number of the actual maximum temperature according to the different phenolic laminated sheet level reduced by 5 ~ 15 ℃. The method is to measure the cold and thermal resistance of the conductor, according to the formula to calculate the average temperature rise.
    3, embedded detection thermometer test copper or platinum resistance thermometer or thermocouple embedded in the winding, the core or other needs to measure the expected temperature of the highest parts. The measurement results reflect the temperature at which the temperature measurement element contacts. Large motors often use this method to monitor the operating temperature of the motor. In the range of 100 ~ 200 ℃ copper or platinum resistance thermometer is more accurate, and thermocouple is not commonly used.
    In addition, the closed fan cooling motor resistance method measured by the temperature measured by the thermometer method of 0 ~ 15% higher; protection of 10% to 20%. While the resistance method and the embedded copper resistance thermometer difference of ± 5%. Therefore, the various measured methods measured by the temperature and the actual maximum temperature difference, and can not really reflect the flexible composite materials of insulating materials, so the insulation material should be "limit the operating temperature" minus the difference is "Maximum allowable operating temperature".

Common Defects and Solutions of Adhesive Tape in Epoxy Plate

As one of the DMD insulation paper in the epoxy board, the quality of the adhesive sheet will directly affect the quality of CCL. For many production targets unqualified products, in the follow-up processing can also be adjusted to make up, but the subsequent production process will bring greater difficulty and inconvenience. Usually the surface of the adhesive film is smooth, no resin particles, bubbles, discount, fish eyes, exposed cloth pattern, yarn breakage yarn, yellow lines, impurities and other defects, and resin content, gel time, volatile content Technical indicators are to meet the requirements of the process requirements. In contrast, the poor quality of the adhesive sheet is much more, then what should we take remedial measures?
First, too much surface particles
The main reason for this defect is that the resin does not sufficiently penetrate into the cloth and forms a granular attachment on the surface. As the hardness of colloidal particles than the copper foil in the process of copper cladding in the corresponding point of the copper foil will be subject to extrusion extension thinning, may cause the printed circuit board is reflected in the appearance of copper foil surface highlights, As the bright spots on the copper foil surface of the antioxidant layer is destroyed, the product at the time of storage is easy to be oxidized or even the formation of corrosion points, greatly reducing the product storage cycle.
Second, glue marks
The main reason for the occurrence of glue marks is the resin content is too large, soaked glass fiber cloth through the measuring roller vertical into the oven, there is liquidity in the liquid due to the impact of gravity on the surface of the cloth to form strip marks. The presence of the marks will have a certain impact on the flatness and warpage of the CCL. In this case, the resin content of the adhesive sheet should be adjusted in time.
Three bubbles
There are two main reasons for the occurrence of bubbles, when the glue is not fully infiltrated into the gap, the air in the gap is not discharged, when the glue was covered with glue in the cloth. When the furnace into the oven due to heat, the residual air expansion in the mica tape for cable surface to form bubbles; dipping tank in the plastic bubble generated by the bubble floating on the surface of the glue, the measuring roller does not completely spread the bubble on the cloth.

The role of insulation material tube is in the electrical equipment to the potential of different charged part of the isolated. Therefore, the insulation material should first have a high insulation resistance and compressive strength, and to avoid leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics. According to the above requirements, commonly used insulating material performance indicators are dielectric strength, tensile strength, specific gravity, expansion coefficient.
Electrician commonly used mica insulation tape according to their different chemical properties, can be divided into inorganic insulation materials, organic insulation materials and mixed insulation materials. Commonly used inorganic insulation materials are: mica, asbestos, marble, porcelain, glass, sulfur, etc., mainly used for motors, bakelite sheet suppliers, switch the bottom plate and insulators. Organic insulating materials are: shellac, resin, rubber, cotton yarn, paper, linen, rayon, etc., mostly used to manufacture insulating paint, winding wire wound insulation and so on. Mixed insulation materials for the above two kinds of materials through the processing of various molding insulation materials, used as electrical appliances of the base, shell and so on.

The researchers said that the researchers chose the chemical nature is very stable, almost no impurities containing potassium tantalate as an insulating material, and then the solid insulation material placed in an ionic liquid, the surface of the insulating material will spontaneously form an electric double layer. In this electric field effect, the electrical insulating board has a superconductivity, in the absolute temperature of 0.05 open (minus 273.1 degrees Celsius) environment to achieve a zero resistance.
It is reported that the research and development of superconducting materials to the main use of two major methods, one is mixed with several kinds of metal metallurgical methods, and the other is the insulator as the main material mixed with impure chemical method, the most representative of the copper Oxide high temperature superconducting material.
The use of electric field effect of the method can be described as the development of superconducting materials, a new means, it can make potassium tantalate such as the original people that can not become mica insulation sheetsl has a superconductivity for the future development of higher critical temperature of the new Superconducting materials laid the foundation.

G11 insulation board is actually insulation board insulation material in a type only, G11 is a class of garolite g7 division. Insulation board in fact there are FR4 insulation board, G11 insulation board, and so on all types and grades of insulation materials. g10 fiberglass tube is mainly used for electronics, electrical industry, has a good insulation performance, in a variety of harsh environments is still able to maintain a good working condition.
pe mica tape has the advantages: its insulation performance is good, there is a certain high temperature resistance, high mechanical properties, with moisture resistance, as well as dielectric properties and so on. Its high temperature resistance can reach 288 degrees of high temperature, but also a normal and stable work.
Specific scope of application: electronic, electrical equipment in the insulation baffle, transformers need to use the insulation board, electronic switch insulation objects, fiberglass meson, precision test panels, as well as precision planetary gears, etc. need insulation and The use of its own characteristics of the various industries and objects.

GPO3 sheet is a very good performance of the fire resistant cables tape, because it was so widely used, so that the counterfeiters will be more on-site market, there are too many fish mixed with GPO-3 insulation materials, although all Close to the GPO-3 label, but the performance is indeed a world of difference. Good insulating material can be safe and efficient for us to use, you can fake and shoddy products but there are many security risks. Below the unsaturated polyester glass mat sheet manufacturers teach you to identify the true and false GPO-3.
Method 1, genuine GPO-3 are required through the US safety laboratory certification (UL certification), with independent and unique UL identification code. So when you buy this kind of insulating material GPO-3 must see if there is no UL identification code, or let the business to provide UL identification code.
Method 2, genuine GPO-3 its resistance to leakage index can reach 600V, you can test it, or let the business to provide indicators.
Method 3, authentic GPO-3 insulation material density is between 1.81-1.83, must be in accordance with national standards, the middle must be no filler, so be sure to see.

Different electrical equipment requirements for the performance of GPO3 sheet are focused. High-voltage electrical equipment such as high-voltage motors, high-voltage cables and other insulation materials require high breakdown strength and low dielectric loss. Low-voltage electrical appliances, such as mechanical strength, elongation at break, heat-resistant grade as the main requirements.
The macroscopic properties of fire resistant cables tape such as electrical properties, thermal properties, mechanical properties, chemical resistance, weather resistance, corrosion resistance and other properties are closely related to its chemical composition and molecular structure. Inorganic solid insulation material is mainly composed of silicon, boron and a variety of metal oxides, mainly to the ionic structure, the main features of high heat resistance, the working temperature is generally greater than 180 ℃, good stability, resistance to atmospheric aging, Chemical properties and long-term under the action of the electric field aging performance; but high brittleness, low impact strength, high pressure and low tensile strength; poor process. Organic materials are generally polymers with an average molecular weight between 104 and 106, and their heat resistance is usually lower than that of inorganic materials. Contains aromatic rings, heterocycles and silicon, titanium, fluorine and other elements of the material heat resistance is higher than the general line of chain polymer materials.
An important factor affecting the dielectric properties of unsaturated polyester glass mat sheet is the strength of the polar and the content of polar components. The dielectric constant and dielectric loss of the polar material are higher than those of the non-polar material, and the impurity ions are easily adsorbed to increase the conductivity and reduce the dielectric properties. Therefore, in the insulation material manufacturing process should pay attention to clean, to prevent pollution. Capacitors require a high dielectric constant to improve their specific properties.

In the electricity process, people note that the size of the cross-sectional area of ​​the power cord material on the safe use of electricity have an impact, but often the use of vpi mica tape is not enough attention. Power lines are now more and more complex, walking under the wood floor, walls, partitions and damp underground or water are, if the insulation tape used improperly, will produce leakage, endangering personal safety or cause a fire. So how do you use insulating tape correctly?
Power cord connector is divided into "ten" word connection, "one" word connection, "Ding" word connection and so on. Joints should be wrapped around, smooth without thorns. Before the thread is disconnected, it should be wiped with a steel wire, and then wound around the mouth, and then swing around, the thread will be quickly in the connector at the break. If the joints in the dry place, should first use insulated black cloth wrapped two layers, and then wrapped plastic tape (also known as pvc adhesive tape) two layers, and then J-10 mica insulation tape stretched about 200% Finally wrapped two layers of plastic tape.
Because the direct use of plastic tape a lot of defects: plastic tape a long time easy to glue dislocation, plastic open, electrical load heavy, the joints heat, plastic tape easy to melt shrink; electrical connectors in the junction box with each other pressure, Easy to stamp the plastic tape, etc., these risks directly endanger personal safety, causing the line is moderate, causing a fire. The use of insulating black tape will not appear above, it has a certain strength, flexibility, can be tightly wrapped around the long-term, by the time and temperature and dry fixed type, will not fall off, and flame retardant. Moreover, wrapped with insulated vinyl tape and then wrapped with moisture, rust.
Of course, bakelite sheet suppliers is also defective, although it is waterproof but easy to break, so the last need to wrap two layers of plastic tape for the protective layer, connector and connector insulation self-adhesive tape non-stick, better performance.

 Electronic and compressed laminated wood plastics is used in the field of electrical and electronic engineering plastics insulation materials, conductive plastics, pressure / thermoelectric plastic and its selection and product design and manufacturing technology. The amount of plastic consumed by the electrical and electronic industry accounts for the third largest total volume of plastics, second only to the packaging and construction industries. The following electronic components and connectors to introduce plastic as an insulating material in the electrical and electronic industry on a number of applications.
Electronic Component:
insulation material tube are generally connectors, coils, induction components as the center, including filters, oscillators, keys and other components. The integration of these components and the emergence of surface decoration technology (SMT), so that the added value of electronic products greatly improved.
Connector:
The connector can be manufactured using a variety of materials such as PA, PBT, PET, etc., where the cost of using PA-made connectors is low. For example,  EPGC204, processing fluidity is good, can be used for the production of thin-walled parts. With the diversification of parts, the dimensional stability and heat resistance requirements higher, the choice of PBT materials, in the special requirements of the connector can be made of PC material. Of course, PPS and LCP reinforced plastics with better heat resistance are also ideal targets.

Epoxy resin in the application process often encounter the following situation:

mica cable tape pouring, potting, molding and other parts after curing or storage will produce cracks during the resulting waste. EP parts in the low temperature or hot and cold alternating when there will be cracks. The larger the part, the more the insert, the more prone to cracks. It is generally believed that this is due to the fact that the curing stress and the temperature stress are greater than the strength of the material. So as long as the strength of EP can be improved to avoid cracking. However, high-intensity EP is often only low impact toughness. Structural elements made of high strength EP (such as structural adhesives, advanced composites, etc.) are often brittle in use and are less stressful than acetate cloth tapes. Fracture surface was brittle fracture morphology. Known as low stress brittle fracture. EP cured products are highly crosslinked polymers with high brittleness.
    For the toughening of epoxy resin, due to the rubber toughening epoxy resin system in the fracture process, the main structure and the structure of the microstructure of rubber, but also the two-phase interface and particle volume fraction has a certain relationship. The toughening rate is mainly determined by the toughness of the microparticles, the average network length of the matrix, and the interface bonding force and the chemical structure of the network chain itself.

How the insulation material is divided by grade

pe mica tape insulation and temperature are closely related. The higher the temperature, the worse the insulating properties of the insulating material. In order to ensure the insulation strength, each insulating material has an appropriate maximum allowable operating temperature, below this temperature, can be used for a long time safe, more than this temperature will quickly aging. According to the degree of heat resistance, the g10 fiberglass tube is divided into Y, A, E, B, F, H, C and other levels, the heat resistance level corresponding to the following:
 Y-class insulation temperature of 90 ℃
 Class A insulation temperature 105 ℃
 Class E insulation temperature 120 ℃
 Class B insulation temperature 130 ℃
 F-class insulation temperature of 155 ℃
 H-class insulation temperature of 180 ℃
 C-class insulation temperature above 200 ℃

Electrical insulation material

Mainly used for motors, electrical appliances, such as in the generator, the motor for the armature wedge, stator windings, rotor winding insulation. According to the shape is divided into six categories: ① insulating paint, resin and adhesive category. For example, insulating impregnated paint, silicon steel lacquer, enameled wire paint, potting resin and a variety of adhesives and other commonly used epoxy resin, polyimide glass fiber, polyurethane, silicone resin, polyimide alkyd resin (see alkyd paint )Wait. ② impregnated fiber products. Such as resin impregnated with various types of cotton, silk, synthetic fiber and glass fiber or fabric insulation fabric, belt and other products. ③ laminated products category. Various organic or inorganic substrates are impregnated with resin after laminates, such as laminates. ④ plastic products category. From the resin to add a variety of organic or inorganic filler, such as TV shell, instrument, instrument shell, electrical switch connector shell and so on. ⑤ thin film, synthetic paper and its composite products category. For example, various polymer film dielectric materials, commonly used are polystyrene, polypropylene, polyester, polycarbonate, polytetrafluoroethylene, polyimide and other films; various synthetic fiber insulation paper, such as aromatic poly Amide fiber paper, polyester fiber paper; all kinds of insulating adhesive tape, insulation tape, and so on. ⑥ rubber products category. Such as a variety of wire and cable insulation and jacket, heat shrink tubing, silicone rubber insulation terminals.

Electronic insulating material

Mainly used for semiconductor components and electronic equipment, insulation protection. ① printed circuit board, that is, copper-coated version. Substrate for the resin laminated compressed wood, known as rigid copper clad version, often used epoxy, phenolic and other resin plate; substrate for the polymer film or single layer of heat-resistant glass cloth, said the flexible copper-clad version, Often used polyester, polyimide, fluoropolymer film. ② packaging materials used to prevent the outside world moisture and impurities on the impact of semiconductor components parameters. At present, about 90% of the semiconductor components used in plastic packaging. Mainly with epoxy resin and silicone resin, followed by phenolic resin, polyester, polybutadiene and so on. (3) Insulating film for semiconductor devices, a surface protective film (including a contact film, a passivation film, a moisture-proof shock film, an α-ray shielding film for preventing soft errors, etc.) of a semiconductor element such as a large-scale film integrated circuit, and an interlayer insulating film The Such as polyimide-based aromatic heterocyclic polymer.

mica tape for cable environmental protection plastic products, after burning odorless and tasteless, does not produce toxic gases, transparent, surface water ripples, no crystal point, no double phase fold white, resistant to grease and chemical strong, toughness and rigidity, impact resistance Good strength (low temperature impact resistance is also good, 20% higher than the PVC standard), for blister, folding boxes, packaging, printing, printing and so on. Transparent film used Transparent PET film for electronic, printing, packaging, insulation, flexible line printing, display screensaver PET, membrane switch, film window, printing film, make-up film base, stickers at the end of paper, Motor gasket, GPO3 sheet belt, instrument panel, capacitor insulation, furniture stripping, window film, protective film inkjet printing and decoration, etc.

mica insulation sheets sericite has a good chemical stability, mica particles fine, Naisuan Jian, anti-aging, the UV has a better shielding function. After the wet purification, the whiteness, hiding power, gloss, creamy feeling, dispersion, adhesion and so have a greater increase, with water, glycerol evenly mixed, and the texture of the rich and flexible, is a senior beauty cosmetics Of the first choice of raw materials and cosmetics foundation materials, can be used as emulsion, cream, pearl agent until the ingredients.
Natural mica gasket is a thick insulation material tube after stripping, thick, cut, drilling or punching, with a certain thickness, a certain shape of the mica parts, the product is suitable for televisions, power capacitors, thermal relays, monitoring Display, aerospace, aviation, communications, radar, heat-resistant matrix tablets as raw and auxiliary materials. It is a kind of natural mineral products, which has the characteristics of no pollution, insulation and voltage resistance. It can be cut according to customer's needs. Of natural mica gaskets.

Insulation sleeve is a kind of mica insulation sheets, is a collectively. The insulation sleeve is made of high quality muscovite paper or phlogopite paper with high-performance organic silica gel bonded by the processing of the rigid tubular insulation material. Insulation casing (mica casing) has good electrical insulation performance and high mechanical strength, insulation casing (mica casing) cooperation in a variety of electrical appliances, electrical, electric smelting furnace and other equipment in the electrode rod or outlet mica casing insulation. Compared with the traditional ceramic tube, insulation casing (mica casing) with wall thickness and oval degree easy to control, discharge evenly, not broken, etc., polyimide glass fiber(mica casing) is the ideal alternative to some ceramic tube. Insulation sleeve (mica casing) is divided into hp5 mica tube temperature 500 ℃, hp8 gold mica tube temperature 800 ℃.

insulation cable paper has inherent dielectric strength, mechanical toughness, thermal stability, chemical compatibility, low temperature performance, is not sensitive to moisture, radiation resistance is the specific characteristics of insulating paper, and we in the future work or life You can use it, you can use it for dry-type transformer circuit breaker panel, spiral wound tube, capacitor insulation layer, DC coil insulation, current-carrying wire and devices, busbar insulation and other aspects, these aspects are Can be used very well, can make the insulating paper play a very good role.
Insulation paper, whether it is for us to work or life, then, is a very good thing, to our lives has brought a lot of help to improve our work efficiency

bakelite electrical insulation board, in recent years, made a special high temperature paper manufacturing breakthroughs, there are several enterprises producing insulating paper products, the temperature and pressure resistance, and the current foreign commonly used H-class insulation paper performance close to the insulation level are To 200, Mu H-class magnet wire requirements. At present, in a company's newly developed mine explosion-proof dry-type transformers, made a domestic insulation paper trial and verification.
In order to improve the production efficiency and working quality of insulating paper embedded in the rotor slot of the motor, it is necessary to conceive a high efficiency motor rotor embedded paper machine.
The working process of the rotor of the motor rotor
The g10 fiberglass sheet is fed to the working platform through the stick, the cutter moves down, cuts the insulating paper, and returns it. The insulating paper continues to move forward in the next cycle, the paper feed machine moves down and returns, The paper is sent to the tank, the motor rotor turns sixty degrees, pushing the paper machine down and pushing the paper into the slot

Explore the practicality of insulating material in electrical equipment

What are the applications of electrical insulating board in electrical equipment? In response to this question, we have to answer: In many electrical equipment, often use insulating materials to other sports materials to isolate. Often we see solid insulation materials: insulating paper, laminates, rubber, plastic, paint, glass, ceramics, mica, etc., in a variety of industrial production often use such solid insulation materials. As the insulation material on the DC current has a very large resistance, under the action of DC voltage, in its surface almost no current through, play a very good insulation.
We all know that in the production of many electrical equipment, the more involved in the line, so often need to use insulating materials. General electrical appliances are made of conductive materials, magnetic materials, insulating materials and epoxy glass laminate sheet, etc., in addition to insulating materials, the rest of the material is mostly metal materials. In the motor electrical operation, it is inevitable to be temperature, electricity, mechanical stress and vibration, harmful gases, chemicals, moisture, dust and radiation and other factors. Compared to other parts of the material, the sensitivity of the insulation material is stronger. If the impact of these factors, insulation materials will deteriorate and so on, so that we can early detection of problems, and timely processing.

The role of insulating material

Insulation material is one of the key factors to determine the technical and economic indicators of electrical and electrical appliances. In the electrical equipment, the charged parts are separated from each other. Therefore, the insulating material should first have high insulation resistance and compressive strength and can avoid the occurrence of Leakage, breakdown and other accidents. Second, the heat resistance is better, to avoid long-term overheating and aging deterioration; In addition, there should be good thermal conductivity, resistance to lightning and high mechanical strength and process processing and other characteristics.
An unsaturated polyester glass mat sheet used to isolate conductive parts of different potentials. Its conductivity is about 10-10 West / m below. Different electrical products, according to the needs of insulating materials are often also play energy storage, cooling, cooling, arc, moisture, mildew, anti-corrosion, radiation protection, mechanical support and fixed, protective conductor and so on.

The properties of the insulating material are affected by which composition

We can not leave acetate cloth tapes in our lives, insulation materials in the harmful gases and wet dust and other conditions will be affected? Let's talk about the knowledge of insulating materials.
1. Resistance, resistivity:
   Resistance is the reciprocal of conductance, the smaller the conductive material, the greater the resistance, the higher the resistivity the better.
2. Sealing degree:
   On the oil, water quality seal cut off better.
3. Ignition resistance:
   People on the insulation of the fire resistance requirements are getting higher and higher, the higher the fire resistance, the better the security,
4. Resistance to arc:
   Insulation material of the surface composition of the electrical layer to determine the insulation of the arc-shaped material. The greater the time value, the better the arc resistance.
5. Tensile strength:
   Insulation material mechanics of the tensile strength of the most extensive, the most representative of the implementation.
6. Voltage, electrical strength:
   Insulation material breakdown voltage, the higher the electrical strength the better.

Insulation board to protect the safety of electricians

electrical insulating board is used in substations, power plants, power distribution rooms, laboratories and field live operations, because it has a high insulation, it can be 35KV and below the live part of the direct contact, from the temporary cover effect, This will allow the electrical safety of individuals to be protected.
Why can the insulation plate have such a good effect? Because the insulation plate has high mechanical strength, dielectric properties, oil resistance and corrosion resistance of the function, so to play the role of insulation. Insulation board and other board is not the same, the appearance of the surface should be smooth and smooth, do not allow impurities and other obvious defects, allowing a slight scratches, the edge should be cut neat, the end surface must not have layers and cracks. At the same time insulation board is also suitable for high-performance electronic insulation requirements of the product.
In addition, the insulation plate in the form of many kinds of strong adhesion, which helps to bond, chemical stability is also very stable, so durable, and resistant to mold, so do not worry about the placement of a long time, And the effect of the effect.

Insulation board storage, careful details

Insulation board in the storage of certain conditions, should pay more attention to some of the details, so as to do anti-aging measures. Only to do the measures, so as to play the effect of insulation board.
1, not visible sunshine
transformer pressboard see the light will produce free radicals, will speed up aging, stored in a cool condition.
2, the temperature appropriate
Storage temperature is too high will lead to the phenomenon of cracking of the insulation board, so the temperature should be appropriate.
3, cool and dry
Anything is in the wet environment is not good, so the insulation is the same, because in a humid environment, easy to be hydrolyzed and destroyed, and learn not close to the ground and walls, to prevent back tide.
4, storage room to be clean
mica insulation tape and oil contact will affect its strength and mechanical properties, so to keep the storage room clean, not other chemical substances.

Environmentally friendly insulation board is the future direction of development

In the world, in order to protect our planet, daily production and application are also more and more taking into account environmental factors. Therefore, although the insulating material of the insulation cable paper is an indispensable core material, it is also used as a raw material, so it will lead to excessive lead content in the detection, including mercury, cadmium, chromium and other elements. This material should not be used, but the insulation material in the hydro-generators, turbo-generator and other power generation equipment has a wider application. This has to be in a variety of engineering power generation, power transmission and distribution of electrical equipment and equipment is met in the link, the technical level of insulation materials, quality, reliability are playing a vital role.
In recent years, we have developed the insulation material, have to avoid 6 or more toxic and hazardous substances become this is our top priority. In response to this market changes, the domestic mica insulation sheets production enterprises on the halogen-free flame retardant CCL, halogen-free flame retardant electrical plastic, halogen-free flame retardant insulating paint and other types of materials will also accelerate.
It is based on this new environmental requirements, the insulation board should be environmentally friendly development, and vigorously developed for the toxic substances alternatives to meet the development of insulation board.

Main features and precautions of insulation board

electrical insulating board materials are diverse, respectively, rubber, resin, curing agent, insulation board principle is the use of material non-conductive principle and electrical insulation, so as to protect people's lives, insulation board mainly through the curing process and refining, with the form Variety, easy curing, low shrinkage, mechanical properties and strong adhesion and so on. Now widely used with a variety of miners factories, substations, power plants, then electricity, laboratories and outdoor cable operation operations, a variety of electric vehicles, transportation and real estate and other places are also widely used. The following are the same as the "
Insulation board used in addition to the prevention of electrical conductivity, the industry is also mainly used for anti-corrosion and wear, impact resistance to protect the use of equipment and device protection, such as thermal power plant desulfurization system is the use of insulating plate anti-corrosion characteristics, Treatment of anti-corrosion in the application of the same principle. The use of insulation board, can effectively extend the life of equipment and protect people's lives for the purpose of safety.
bakelite electrical insulation board is used for insulation with the earth, the length of its laying can not be less than 60cm, and the thickness is based on the size of the voltage, the greater the voltage, the thickness should be appropriate to thicken to prevent accidents. Insulation board to use when tiled on the ground, can not be muster, can not have holes, cracks and other defects. Use the environment to be dry place, can not be used in wet places.

Single panel and insulation board distinction

Single panel history:
Single-sided printed circuit board is the early 1950s with the emergence of transistors, the United States as the center of the product developed, when the main production methods to copper foil direct etching method for the mainstream. 1953 ~ 1955, Japan imported copper foil for the first time made of paper phenolic copper foil substrate, and a large number of applications in the radio. In 1956, the Japanese circuit board professional manufacturers, single-panel manufacturing technology then rapid progress. In the material, the early to paper-based phenolic copper foil-based, but because of the material at the time of electrical insulation is low, poor heat resistance welding, twisting and other factors, one after another paper ring resin, glass epoxy resin and other materials Development, the current consumption of electronic equipment required for a single panel, almost using paper phenolic substrate board.
Single panel features:
The single panel is on the most basic PCB, the parts are concentrated in one side, the wires are concentrated on the other side. Because the wires only appear on one side, we call this kind of PCB called single-sided. Because there are many strict restrictions on the design of the single-sided board (because there is only one side, the wiring can not cross and must be around the path), so only the early circuit to use such a board;
Single-panel wiring diagram to network printing (Screen Printing), that is, printed on the copper surface of the resistance agent, after etching and then anti-solder mark on the mark, and finally punching processing to complete the parts guide hole and shape. In addition, a small number of diverse production of products, the use of photoresist to form a pattern of photography.
Insulation board, also known as insulation pads, insulation pads, insulation pads, unsaturated polyester glass mat sheet. Insulating mats are widely used in substations, power plants, distribution rooms, laboratories and field live operations.
The use of plastic insulation materials, insulation pad on the surface should be no harmful irregularities. Insulation mats Hazardous irregularity refers to one of the following characteristics, namely, damage to uniformity, damage to the surface smooth contour defects such as small holes, cracks, local uplift, incision, inclusions conductive foreign bodies, creases, voids, embossed corrugations and casting Logo and so on. Harmless irregularity refers to the surface irregularities that are formed in the production process.
In the entire insulation board should be randomly selected more than five different points for thickness measurement and inspection. Can be measured using thousands of points of mind or the same precision of the instrument. The accuracy of the micrometer should be within 0.02mm, the diameter of the drill is 6mm, the diameter of the flat presser foot is (3.17 ± 0.25) mm, and the presser foot should be able to apply the pressure of (0.83 ± 0.03) N. The insulation pad should be placed flat Make the micrometer between the measurements smooth.

Fr4 insulation board is what material

FR-4 is a code for the grade of flame polyimide glass fiber, which means that the material of the resin material must be self-extinguishing. It is not a material name but a material grade. Therefore, the current general circuit There are a lot of FR-4 grades used in the boards, but most are composites made of so-called Tera-Function insulating resin and Filler and glass fiber. FR-4 Epoxy Glass Cloth, Insulation Board, Insulation Board, compressed laminated wood, Brominated Insulating Resin Board, FR-4, Glass Fiberboard, FR-4 Insulating Glass Cloth Laminate, FR-4 Epoxy Glass Cloth, FR-4 reinforced resin board, flame retardant insulation board, FR-4 laminated board, insulation board, FR-4 light board, FR-4 reinforced board, FPC reinforced board, flexible circuit board reinforcement board, FR- FR-4 glass plate, insulated glass cloth board, insulated glass cloth laminated board, circuit board drilling plate. Main technical characteristics and application: stable electrical insulation, smoothness, smooth surface, no pits, thickness tolerance standards, suitable for high-performance electronic insulation requirements of products such as FPC reinforced board, PCB drilling pad, glass (Dielectric) equipment, electrical insulation (electrical equipment) insulation barrier strips, insulation pads, transformers insulation board, motor insulation, grinding gears, Electronic switch insulation board.

Classification of insulation materials

transformer pressboard insulation and temperature are closely related. The higher the temperature, the worse the insulating properties of the insulating material. To ensure the insulation strength, each insulation material has a suitable maximum allowable operating temperature, below this temperature, can be used for long-term safety, more than this temperature will quickly aging. According to the degree of heat, the epoxy fiberglass tube is divided into Y, A, E, B, F, H, C and other levels, the heat resistance level corresponding to the following:
Y-class insulation temperature 90 ℃, A-class insulation temperature 105 ℃, E-class insulation temperature 120 ℃, B-class insulation temperature 130 ℃, F-class insulation temperature 155 ℃, H-class insulation temperature 180 ℃, Insulation temperature above 200 ℃.

Insulating paint, can withstand the current through the coating, the volume resistivity is usually greater than 109Ω.cm coating called vulcanized fiber sheet. The effect of the insulating coating is to isolate the charged part from the uncharged part or the part with different potentials so that the current can flow according to a certain path. According to the national standard GB2900 -: - 5 provides the definition of epoxy glass laminate sheet is: "used to make insulation on the electrical components of the material", that is, to prevent the current, shielding current through the material. Beijing Zhisheng Weihua high temperature insulating coating research and development departments, the organization of more than 10 materials experts, after years of research and development, insulation insulation performance has a comprehensive breakthrough to enhance the other industry process has immeasurable significance.

What are the insulating materials?

mica insulation sheets, also known as dielectric. It is the non-conductive material that can be used to prevent the current from passing through the insulating material. Commonly used insulating materials are: gas: such as air, sulfur hexafluoride and so on. EPGC203: including two categories, one is inorganic insulation materials, such as mica, asbestos, porcelain, glass, and the other is organic matter, such as paper, cotton yarn, wood, wood, Plastic and so on.

Main indicators affecting the performance of insulating materials:

(1), insulation resistance and resistivity
The resistance is the reciprocal of the conductance, and the resistivity is the resistance per unit volume. The smaller the conductivity of the material, the greater the resistance, the reciprocal relationship between the two, for the insulation material, always want the resistivity as high as possible. In order to improve the insulation performance.
(2), relative dielectric constant and dielectric loss tangent
laminated compressed wood uses two: electrical network components of the mutual insulation and capacitor media (energy storage). The former requires a relatively small relative dielectric constant, which requires a relatively large relative dielectric constant, and both require dielectric loss tangent, especially in high frequency and high voltage applications of insulating materials, in order to make dielectric loss is small, are required to use Dielectric loss tangent small insulation material.
(3), breakdown voltage and electrical strength
In a strong electric field under the destruction of insulating materials, loss of insulation into a conductive state, known as breakdown. The breakdown voltage is called the breakdown voltage (dielectric strength). Electrical strength is the breakdown of the voltage between the voltage and the two electrodes subjected to the applied voltage under the specified conditions, that is, the breakdown voltage per unit thickness. For insulating materials, the general breakdown voltage, the higher the value of electrical strength
(4), tensile strength
Is the maximum tensile stress that the specimen is subjected to in the tensile test. It is the most widely used and tested test of the mechanical properties of insulating materials.
(5), flame resistance
Refers to the soldering frames in contact with the flame to resist combustion or leave the flame to prevent the ability to continue to burn, as well as long-term high temperature environment, anti-aging ability. With the increasing use of insulating materials, its flammability requirements are more important, people through various means to improve and improve the flame resistance of insulating materials. The higher the flame resistance, the better the safety.
(6), resistant to arc
Under the specified test conditions, the insulating material is resistant to the arc acting along its surface. Test the use of high voltage AC current, by high pressure between the two electrodes generated by the arc, so that the surface of the insulating material to form the conductive layer of the time required to determine the arc resistance of insulating materials. The greater the time value, the better the arc resistance.
(7), the degree of sealing
On the oil, water quality and other substances sealed isolation is better.

A material that allows the live body to be isolated from other parts. Commonly used solid materials are insulating sleeves, insulating paper, laminates, rubber, plastic, paint, glass, ceramics, mica and so on. Commonly used liquid materials are transformer oil. Gaseous materials in the air, nitrogen, sulfur hexafluoride and other use more. Society is using more anti static plastic sheet. Use and industry and life, the more common is the "electrical tape", "plastic", ceramics and so on. Are all insulating materials.
Insulation material: Resistivity of 109 ~ 1022 Ω · Cm of the material composition of the material in the electrical technology known as insulating materials, also known as dielectric. Simply say that the material is isolated from the charged body. Insulation material on the DC current has a very large resistance, under the action of DC voltage, in addition to a very small surface leakage current, in fact, almost non-conductive, and for the AC current capacitor current through, but also that is not Conductive. The greater the resistivity of the insulating material, the better the electrical insulating board. The following are the same as the "
Insulating materials are absolutely indispensable in electrical products. For example, a 300MW turbo generator requires 10t insulation, mica 8t, laminate 5t, lacquer and film about 1t; a 3200kW transformer insulation material required for its total quality of 34%; a 10kV high pressure The insulation required for the circuit breaker is 18% of its total. According to China's power generation equipment installed capacity and supporting electrical equipment, insulation materials, the average consumption of 65t / 10MW, which shows that insulation materials in the electrical equipment occupies a very large ratio.