Brief Analysis of the Practical Application of Polyimide Film

Polyimide film is one of the earliest commodities of polyimide, which is used for slot insulation of motors and cable wrapping materials. The main products are DuPont Kapton, Ube’s Upilex series and Zhongyuan Apical. Transparent polyimide films serve as flexible solar cell masters. The sails of IKAROS are made of polyimide films and fibers. In the thermal power generation sector, polyimide fibers can be used to filter hot gases, and polyimide yarns can separate dust and special Chemical material.

Coating: As insulating paint for magnet wire, or as high temperature resistant paint.

Advanced composite materials: used in aerospace, aircraft and rocket components. It is one of the most high temperature resistant structural materials. For example, the supersonic passenger plane in the United States is designed to have a speed of 2.4M, a surface temperature of 177°C during flight, and a required service life of 60,000h. It is reported that 50% of the structural materials have been determined to be thermoplastic polyimide as the matrix resin. of carbon fiber reinforced composite materials, the amount of each aircraft is about 30t.

Fiber: The modulus of elasticity is second only to carbon fiber, which is used as a filter material for high temperature media and radioactive substances, as well as bulletproof and fireproof fabrics. Various polyimide products are produced in Changchun, China.

Foam plastic: used as high temperature insulation material.

Engineering plastics: There are thermosets and thermoplastics. Thermoplastics can be compression molded or injection molded or transfer molded. Mainly used for self-lubricating, sealing, insulating and structural materials. Guangcheng polyimide materials have been applied to mechanical parts such as compressor rotary vanes, piston rings and special pump seals.

Separation membrane: used for separation of various gas pairs, such as hydrogen/nitrogen, nitrogen/oxygen, carbon dioxide/nitrogen or methane, etc., to remove moisture from air hydrocarbon feed gas and alcohols. It can also be used as pervaporation membrane and ultrafiltration membrane. Due to the heat resistance and organic solvent resistance of polyimide, it is of particular significance in the separation of organic gases and liquids.