Structure and properties of rigid low⁃density open⁃cell polyimide foam prepared by vacuum⁃assisted foaming
XIE Mingdong, QIN Liu, SI Daoxing, LIU Jiaxin, YANG Weimin
China Plastics . 2025, (11): 7 -12 .  DOI: 10.19491/j.issn.1001-9278.2025.11.002