Journal
POLYMER BULLETIN
Volume 77, Issue 11, Pages 5899-5912Publisher
SPRINGER
DOI: 10.1007/s00289-019-03045-x
Keywords
Polyimide foam; Cross-linked; Thermal foaming; Density; Mechanical property
Categories
Funding
- Research Starting Foundation of Xi'an Polytechnic University [107020414]
- Innovation and Entrepreneurship Foundation of XPU [201909]
Ask authors/readers for more resources
This work provides a method for fabricating rigid polyimide foams via thermal foaming method of nadimide-end-capped polyester-amine oligomer (NPEAO) precursor particles, which were synthesized by reaction of benzophenone-3,3 ',4,4 '-tetracarboxylic dianhydride andcis-5-norbornene-endo-2,3-dicarboxylic anhydride (NA) with different diamines. The foaming mechanism of the rigid PI foams was systematically investigated. The experiment demonstrates that the pre-treatment of the NPEAO precursor particles and foaming temperature are two pivotal factors that determine the foaming processes. The densities of the prepared rigid PI foams are mainly in the range of 40-200 kg m(-3). Moreover, the density and morphology of the PI foams can be effectively controlled by adjusting these two factors. Besides, the obtained rigid PI foams present excellent mechanical and thermal properties, specifically, the flexural and compressive strength reaches as high as to 1.42 MPa and 0.47 MPa, respectively, with the density of 0.076 g cm(-3), which are superior to common PI foams and aerogels that of reported in the literature. Therefore, these superior mechanical and thermal properties make obtained rigid PI foams promising candidates as structural materials in the advanced manufacturing industry.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available