Polymethacrylimide foam (PMI foam) has a wide range of uses and the level of localization in the Chinese market needs to be improved.

Polymethacrylimide foam, also known as PMI foam, refers to a type of rigid foam with a copolymer of methacrylic acid (MAA) and methacrylonitrile (MAN) as the base resin, and a main chain containing re…