Learn about the properties of polyimide films

Imine insulating film, known as "gold film", has excellent performance. Imine insulating film is widely used in aerospace technology, F-class and H-class motor and electrical insulation, FPC (flexible printed circuit board), Tab (pressure sensitive tape), aerospace, aviation, computer, magnet wire, transformer, audio, mobile phone , computer, smelting, mining, electronic components industry, automobile transportation, atomic energy industry and other electrical and electronic industries.

Relevant state departments should be policy-oriented, give sufficient attention and support to the development and production of high-performance polyimide films, and promote the industrial production scale of high-performance polyimide films as soon as possible. Colorless transparent polyimide film. It is recommended to continue to strengthen the research and development of R&D industrialization technology, and focus on the basic work of new material research and development. D. Adopt key polyimide production technology with independent intellectual property rights, promote the localization process of polyimide film and its products, and meet national strategic needs. Gradually replace imports.

Insulation can generally be divided into gas insulation, liquid insulation and solid insulation. In practical applications, solid insulation is still a widely used and reliable insulating material. Under the action of strong current, the insulating material may be broken down and lose its insulating properties. Among the above three insulating materials, after the gas insulating material is broken down, once the external factors (strong electric field) are removed, its inherent electrical insulating properties can recover by itself; after the solid insulating material is broken down, its electrical insulation is irreversibly and completely lost. performance. Therefore, the insulation selection of electrical lines and equipment must match the voltage level and adapt to the use environment and operating conditions to ensure insulation safety.

Polyimide film is a new type of high temperature resistant organic polymer film, which is polycondensed by pyromellitic dianhydride (PMDA) and diaminodiphenyl ether (ODA) in a strong solvent dimethylacetamide (DMAC), It is formed by salivation and then aminated. At present, the world's best-performing thin-film insulating materials. It has excellent mechanical properties, electrical properties, chemical stability, high radiation resistance, high temperature resistance and low temperature resistance (-269°C to +400°C).