Insulating paper is usually a sheet-like material formed by plant fibers, mineral fibers, synthetic fibers or their mixtures, which are deposited on a paper machine through water or other media. Insulating paper has high tear strength, low elongation, and good insulation, so it is widely used as an insulating material in motors, cables, capacitors and transformers. It is also the main component of insulating materials such as laminates, composites and prepregs.
In recent years, with the development of the power industry, modern power generation equipment and power transmission equipment have developed towards high-voltage and large-capacity. With the rapid development of world science and technology, a variety of high-performance synthetic fibers have been developed and produced and applied to the paper industry. Such as polyester fiber paper, polyaramid fiber paper, polysulfone fiber paper, polyoxadiazole fiber paper, etc., have been successfully applied to electrical equipment such as batteries, transformers, and capacitors. In particular, the application of aramid insulation paper is the most common and success.
Insulation paper can be divided into
cable paper, telephone paper,
capacitor paper and
polyester insulation paper. Insulation paper is a type of laminated board, which is made of paper or cloth, impregnated with different adhesives and hot pressed or rolled. It can be made into products with very good electrical and mechanical properties, thermal stability, oil resistance, mildew resistance, arc resistance and corona resistance. It is often used for structural materials and insulating layer materials, such as circuit boards, frames, washers and rotating gears. The performance index depends on the characteristics of the substrate and the adhesive and the extrusion molding process.
The more common insulating paper substrates include wood fiber paper and alkali-free glass cloth. Frequently used adhesives include phenolic resin, silicone resin, etc., which also have a greater impact on the performance indicators of laminated products. According to the heat resistance level, the insulating layer materials are divided into Y, A,E,B, F, H and other levels. For example, the allowable working temperature of Class A insulation material is 105°C, and most of the insulation materials used in distribution transformers and motors generally belong to Class A. Separate the live parts with different potentials in electrical equipment, so the insulating layer material should first have a higher insulation resistance and pressure strength, and can prevent safety accidents such as leakage and breakdown. In addition, the thermal stability is better to prevent aging and deterioration due to long-term overheating.
As a professional insulation material manufacturer,
Yanan provide the most complete
insulation paper to the worldwide customers. Besides Yaan also provide the
insulation varnish,
insulation sleeving,board and the insulation tape ,the insulation film and many other insulation materials and etc.
