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Polyimide Applications



1, Film: Polyimide is one of the earliest commodities, used for the electric motor groove insulation and cable wrapped material. The main products are DuPont Kapton, Yu Department hing Production Upilex series and Kanegafuchi apical. A transparent polyimide film can be used as a soft base plate for solar cells.

2. Coating: Used as insulating varnish for electromagnetic wire, or as a high temperature resistant coating.

3. Advanced Composite Materials: for aerospace, aircraft and rocket parts. is one of the most high-temperature-resistant structural materials. For example, the U.S. supersonic plane program designed to speed 2.4M, the surface temperature of the flight is 177 ℃ and the service life is 60000h, and 50% of the structural material is reported to be a carbon fiber reinforced composite with thermoplastic polyimide as the base resin, with an amount of about 30t per aircraft.

4. Fiber: The elastic modulus second only to carbon fiber, as high-temperature medium and radioactive material filtration material and bulletproof, fire-proof fabric.

5. Foamed Plastics: Used as high temperature insulation material.

6. Engineering Plastics: Thermosetting also has thermoplastic type, thermoplastic can be molded molding can also be injection molding or transfer molding. Mainly used for self-lubricating, sealing, insulating and structural materials. Wide Chengzu amide materials have been used in compressor rotary vane, piston ring and special pump seals and other mechanical components.

7. Adhesive: Used as high temperature structural adhesive. Wide Chengzu amide adhesives as electronic components of high insulation potting material has been produced.

8. Separation membrane: For various gas pairs, such as hydrogen/nitrogen, nitrogen/oxygen, carbon dioxide/nitrogen or methane separation, from the air hydrocarbon raw gas and alcohol removal of water. It can also be used as pervaporation membrane and ultrafiltration membrane. Because of its heat-resistant and organic solvent resistance, polyimide is of particular importance in the separation of organic gases and liquids.

9. Photoresist: Negative and positive adhesive, resolution up to submicron level. With pigments or dyes can be used in color filter film, can greatly simplify the processing process.

10. Applications in microelectronic devices: used as dielectric layer for interlayer insulation, as buffer layer can reduce stress, improve yield. As a protective layer can reduce the impact of the environment on the device, but also to a-particle shielding, reduce or eliminate the device's soft error (soft error).

11. Liquid crystal Display Orientation Arrangement agent: Polyimide in TN-LCD, STN-LCD, TFT-LCD and future Ferroelectric liquid crystal display of the orientation agent materials have a very important position.

12. Electro-Optical Materials: used as passive or active waveguide materials, such as optical switch materials, fluorine-containing polyimide in the range of communication wavelength is transparent, with polyimide as the matrix of Hair color group can improve the stability of the material.

13. Humidity sensitive material: using its moisture absorption linear expansion principle can be used to make humidity sensor.