[2] [2] GU W, WANG G, ZHOU M, et al. Polyimide-based foams: fabrication and multifunctional applications[J]. ACS Applied Materials & Interfaces, 2020, 12(43): 48246-48258.

[3] [3] ZHANG Y Z, ZHANG G C, SUN X F, et al. Properties and microstructure study of polyimide foam plastic[J]. Cellular Polymers, 2010, 29(4): 211-226.

[4] [4] LUO Y F, NI L, ZHANG X Q, et al. Fabrication of rigid polyimide foams with superior compressive properties[J]. Industrial & Engineering Chemistry Research, 2022, 61(2): 1089-1099.

[5] [5] NI L, LUO Y, QIU B, et al. Combining microwave-assisted foaming and post curing process to prepare lightweight flexible polyimide foams for thermal insulation applications[J]. Macromolecular Materials and Engineering, 2022, 307(7): 2100941.

[6] [6] NI L, LUO Y, QIU C, et al. Mechanically flexible polyimide foams with different chain structures for high temperature thermal insulation purposes[J]. Materials Today Physics, 2022, 26: 100720.

[10] [10] MONIE F, VIDIL T, GRIGNARD B, et al. Self-foaming polymers: opportunities for the next generation of personal protective equipment[J]. Materials Science and Engineering, 2021, 145: 100628.