The outstanding performance of the polyimide in each area
Film: Polyimide is one of the first commodity, for motor slot insulation and cable wrapping material. Transparent polyimide film as a flexible solar cell substrate.
Coating: As for magnet wire insulation paint, or use as a heat resistant coatings.
Advanced composite materials: 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 composites per aircraft amount of about 30t.
Fiber: Modulus of elasticity after the carbon fiber as the medium and high-temperature filtration materials and radioactive substances bulletproof, fireproof fabric.
Foam: Used for high temperature insulation material.
Engineering Plastics: There is also a thermosetting thermoplastic, thermoplastic molding can also be used for injection molding or transfer molding. The main lubrication, sealing, insulating and structural materials for self.
Adhesive: For high temperature structural adhesive.
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.
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.
In microelectronic device applications: The dielectric layer is used as interlayer insulation, a buffer layer may reduce stress and improve the 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 soft error (soft error) devices.
LCD alignment arrangement agent used: Polyimide TN-LCD, STN-LCD, TFT-LCD and future aspects of the ferroelectric liquid crystal display material aligning agent occupies a very important position.
The Light Material: Materials used as passive or active optical waveguide switch materials, fluorine-containing polyimide in a communication wavelength range of transparent polyimide chromophore as substrate material can improve stability.
Moisture sensitive material: Using its hygroscopic linear expansion principle can be used to make the humidity sensor.
In summary, it is easy to see many of the heterocyclic aromatic polyimide polymer may be the reason why from the 1960s, 1970s stand out, eventually become reasons for an important class of polymer materials.