Polyimide Applications: Due to the characteristics of the polyimide in synthetic chemistry and properties in many polymers, such as polyimide so hard to find
With such a wide range of applications, but also in every aspect of the show a very outstanding performance.
1 film: polyimide is one of the first commodity, for motor slot insulation and cable wrapping material. The main products are DuPont Kapton, Ube Kosan Upilex series and Kaneka Apical. Transparent polyimide film solar cells can be used as a soft bottom plate.
2. Paint: paint used as an insulating wire, or use as a heat resistant coatings.
3. Advanced Composites: for the aerospace, aircraft and rocket parts. It is one of the most high-temperature structural materials. E.g., U.S. supersonic speed aircraft program designed to 2.4M, flight surface temperature of 177 ℃, claim life of 60000h, it is reported to have been determined as 50% of the structural material to thermoplastic polyimide matrix resin carbon fiber reinforced composite material, the amount of each aircraft is about 30t.
4. Fiber: elastic modulus carbon fibers behind, as the high temperature medium and filter materials and radioactive substances bulletproof, fireproof fabric.
5. Foam: for high temperature insulation material.
6. Engineering Plastics: thermosetting there thermoplastic, thermoplastic molding can also be used for injection molding or transfer molding. The main lubrication, sealing, insulating and structural materials for self. Wide polyimide materials have begun to use the rotary vane compressor, piston rings and special pump seals and other mechanical parts.
7. Adhesive: for high temperature structural adhesive. Wide polyimide adhesives as electronic components insulation potting material has high production.
8. The separation membrane: for a variety of gases, such as separating the hydrogen / nitrogen, nitrogen / oxygen, carbon dioxide and / or methane, nitrogen, etc., to remove moisture from the air and the hydrocarbon feed gas alcohols. But also as a pervaporation membrane and ultrafiltration membrane. Since the polyimide heat and organic solvent resistance, has a special significance in the separation of organic gases and liquids.
9. resist: There are positive and negative plastic glue, with sub-micron resolution. And pigments or dyes can be used with the color filter, it can greatly simplify the processing operations.
10. In the microelectronic device applications: used as a dielectric layer, interlayer insulation, as a buffer layer can reduce stress and improve yield. As the protective layer can reduce the environmental impact of the device can also act as a shield for the a- particles, reducing or eliminating device soft error (soft error).-oriented Agent
11. The liquid crystal display used: polyimide in TN-LCD, SHN-LCD, TFT-CD and future ferroelectric LCD device aligning agent materials occupies a very important position.
12. - The light material: Material used as passive or active optical waveguide switch materials, fluorine-containing polyimide in a communication wavelength range of transparent polyimide as a chromophore base material can be improved stability.
In summary, it is easy to see many of the heterocyclic aromatic polyimide polymer may be the reason why from the 1960s, the 1970s stand out, eventually become reasons for an important class of polymer materials.