Characteristics of application examples of polyimide film

2023-03-11 16:02:55

The good chemical stability of the polyimide film enables its products to be used under conditions where other bearing materials, such as oil-impregnated bronze, are damaged by chemical corrosion. Polyimide has excellent radiation resistance, and the bearings made of it can be used under high radiation density.

A plastic bearing will fail due to wear when its internal surface temperature exceeds the critical limit of the bearing material. Bearing internal surface temperature increases with load and speed. Because polyimide has the properties of high temperature resistance and high load bearing, the bearing made of it can withstand higher speed and larger load than other plastic bearings.

In the electrical and electronic industry, it can be used for insulation wrapping of H-class motors and transformer coils with higher requirements, wrapping and fixing of high-temperature resistant coil ends, protection of thermal resistance for temperature measurement, entanglement of capacitors and wires, and other bonding insulation under high-temperature working conditions.

In the circuit board manufacturing industry, it can be used for electronic protection paste, especially for SMT temperature protection, electronic switches, PCB gold finger protection, electronic transformers, relays and other electronic components that need high temperature resistance and moisture protection. And according to the needs of special processes, it is equipped with low-static and flame-retardant polyimide tape! High-temperature surface reinforcement protection, high-temperature spray paint and sandblasting coating for metal materials to shield the surface protection, after high-temperature spray paint baking, it is easy to peel off without leaving residue glue.

From the application examples of some typical polyimides, the way to use its unique properties to obtain practical and economic effects is clarified. Polyimide is commonly used in the manufacture of mechanical moving parts, such as bearings, piston rings, seals, wear plates, etc., rather than in the manufacture of structural parts. These applications take advantage of properties of polyimide resins that are not found in metals and most other engineering plastics.