Preparation of Polyimides with Anionic Electrodeposition Coating Ability and Properties of their Deposition Coatings

• Published in: Journal of photopolymer science and technology Vol. 31; no. 5; p. 607
• Main Authors: Kobayashi, Ayumi, Wada, Hidenobu, Yamashita, Masayuki, Bando, Seiji, Yamashita, Takashi
• Format: Journal Article
• Language: English; Japanese
• Published: Hiratsuka Japan Science and Technology Agency 01.09.2018
• Subjects: Bentonite; Coated electrodes; Electric devices; Electrodeposition; Energy utilization; Insulation; Nanoparticles; Polyimide resins; Sustainable development; Thermal stability
• ISSN: 0914-9244; 1349-6336
• DOI: 10.2494/photopolymer.31.607

With the paradigm shift in the development and utilization of energy systems from petroleum to electricity owing to sustainability considerations, the development of high-performance electrical devices has become increasingly important. Insulating materials are one of the key technologies for the practical application of next-generation electric devices because they must be driven at higher voltages and their complex shapes cannot be coated using current techniques. Therefore, the development of insulating materials with thermostability and facile electrodeposition ability is crucial for the production of high-performance next-generation electric devices. In the current study, anionic electrodeposition coating was successfully performed using poly(amide acid) nanoparticles, which can be converted to polyimides upon thermal annealing. Hybrid coating using polyimide/bentonite with an inorganic filler content of 40% was also performed, and the resulting electrodeposition films were thermostable to more than 450 °C.