Polyimide materials also have better heat and chemical resistance as compared to FR-4 materials. Although polyimide PCBs are more expensive than FR-4 boards, better features and properties of the ...

A polyimide aerogel (PIA) was used to synthesize low-dielectric-constant polyimide composite films. Unlike silica aerogel (SIA) composites, the PIA films were synthesized using polyimide. The ...