News

​Electrical Insulation Precompressed Pressboard is a solid insulation support material for oil immersed power transformers and reactors, mainly used for load-bearing insulation structures such as winding end pressure plates, insulation pads, and support bars. The core process that determines its high mechanical strength, low compression creep, and excellent electrical insulation performance is the preloading process. Below is a detailed explanation of the pre pressing process principle, complete process, and process control points of the electrical insulation pre pressing plate.

​Polyimide Film For Motor Coil Winding is a premium high-temperature electrical insulation material for motor coil winding. With long-term thermal resistance at 220°C, excellent dielectric strength, partial discharge resistance and chemical stability, it is widely adopted as slot liner, turn-to-turn insulation and phase insulation for stators and rotors. It is mainly deployed in industries with high temperature, high voltage, high-frequency pulse and heavy vibration operating environments.

Electrical Insulation Aramid Paper is a high-performance dielectric material widely used in transformers, high-voltage motors, power batteries and electrical winding insulation. Thanks to excellent thermal stability, high dielectric strength and outstanding flame resistance, aramid paper has become an irreplaceable insulation material for high-temperature electrical equipment. However, once electrical insulation aramid paper reaches its service life, its recycling and degradation bring multiple technical and environmental challenges for power equipment manufacturers and waste treatment enterprises.

​ Polyester mica tape is a high-performance flexible electrical insulation material composed of mica paper, polyester film backing, and high-temperature resistant adhesive. It features excellent heat resistance, flame retardancy, dielectric strength, tensile stability, and moisture resistance. Compared with glass-fiber mica tape, polyester mica tape offers higher tensile strength, better flatness, smoother winding performance, and lower breakage rate during automated production.

​Electrical Insulation Precompressed Pressboard is a hard insulation board made by resin impregnated fiber substrate and high-temperature pre pressed curing, which has comprehensive characteristics such as high insulation, high flatness, compression resistance without deformation, high temperature resistance, and dimensional stability. Different from ordinary insulation boards, it has undergone pre compression densification treatment, with stronger pressure bearing capacity, less prone to delamination and bulging, suitable for working conditions that require simultaneous pressure bearing and electrical isolation. It is widely used in industries such as power, hydraulic hot press, lithium batteries, composite material forming, and testing fixtures.

The Acrylic Coated Fiberglass Sleeve is a flexible woven substrate, and the preferred methods are the grid cutting tape method and the X-cutting tape method; The pull-out method is only for research and development comparison and is not suitable for routine factory inspection; There is also adhesion verification after bending and thermal aging (industry specific judgment for casing)