Facile synthesis of super-thermal insulating polyimide aerogel-like films.

ABSTRACT: Thermal superinsulation materials play a key role in reducing energy consumption. In this article, flexible polyimide aerogel-like films are developed by a facile non-solvent-induced phase separation combined with ambient drying method. The pore structure and insulation properties are well controlled by changing the compositions of the coagulation bath. Polyimide films with macro-nano hierarchical pore structure and uniform nanopores are prepared by adjusting the content of water and alcohol as the non-solvent. The relationship between the insulation performance and textured structure of polyimide was studied. After optimization, the produced film achieved a low thermal conductivity of 0.019 W⋅m^-1·K^-1 but good tensile strength of 89.6 MPa, compared favorably with lite

SUBMITTER: Ma J 

PROVIDER: S-EPMC9732405 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature