What scenarios are suitable for using Electrical Insulation Precompressed Pressboard

       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.

1、 Core product features (supporting scenario selection)

      1. Excellent electrical insulation performance, can block AC/DC leakage, prevent short circuits and creepage risks between the workpiece and the press table;

      2. Pre pressed dense structure, resistant to compression and deformation, not easy to sink, warp, or layer under continuous high pressure and hot pressing environment, ensuring uniform pressure transmission;

      3. High flatness and stable thickness tolerance, ensuring uniform force distribution of the pressed product and reducing thickness deviation of the finished product;

      4. Good heat resistance, adaptable to medium and high temperature hot pressing processes, slow insulation performance degradation at high temperatures;

      5. Easy to machine, can drill holes, mill grooves, and cut, making it convenient to make tooling pads and isolation fixtures.

2、 Main applicable scenarios

1. Composite material hot pressing press pad

      Carbon fiber board, fiberglass board, FRP composite material molding/laminating process. Placed between the mold and the metal table of the press, it provides insulation isolation and uniform pressure transmission to prevent mold leakage, buffer pressure, protect the press table, and improve the surface flatness of composite products.

2. Lithium battery/energy storage electrode hot pressing fixture

      Hot leveling of lithium electrode sheets after rolling, and hot pressing packaging process for soft pack batteries. As an insulation pad for a hot press machine, it isolates the metal frame of the machine from conducting electricity and avoids the risk of short circuits; The high rigidity of the board ensures uniform compression of the pole pieces and controls the consistency of the pole piece thickness.

3. High voltage testing and electrical withstand voltage testing fixtures

      Insulation bearing pad for voltage tester and high-voltage breakdown test bench. Place the tested workpiece, isolate the high-voltage circuit from the metal workbench, prevent grounding short circuits, and meet electrical safety testing requirements.

4. PCB circuit board lamination, copper-clad laminate lamination

      PCB multi-layer board pressing process, used as an isolation pad. Insulate and isolate in a high-temperature and high-pressure compression environment, evenly transmit pressure, protect the hot plate, and prevent conduction between the plate and the metal table of the press.

5. Hydraulic/vacuum hot press insulation pad

      Various vacuum hot pressing and flat plate vulcanization equipment. When the mold has a heating and electrified structure, use an electrically insulated pre pressed plate to isolate the heat source from the metal frame, avoid leakage, and share pressure.

6. Insulation fixtures for motors and transformers

      Insulation molding and insulation gasket hot pressing production. Used for pressing insulation material blanks, isolating conductive parts of press machines, and ensuring production safety.

7. Powder metallurgy, ceramic billet cold/hot preloading

      Pre molding and pressing of ceramic green bodies and metal powder compacts. The insulation pressure plate serves as a fixture pad, achieving electrical isolation on the live heating press while bearing the forming pressure to ensure uniform density of the billet.

8. Preparation of hot pressed samples in the laboratory

      Small hot press testing machine for universities and material research institutes, used for pressing new material samples as insulation bearing pads, balancing safety and high-precision pressure transmission.