Polyimide (PI) is a polymer with an imide ring structure in the backbone. As an important high-performance polymer, PI has been widely used in the aerospace and microelectronics industries due to its excellent thermal stability, mechanical properties, dimensional stability, chemical resistance, and insulation properties. Some typical applications of PI include high-temperature resistant coatings for spacecraft, structural support materials for light spacecraft, solar cell substrates, flexible printed circuit boards, and insulation layers for large integrated circuits. This book provides...