Journal
POLYMERS FOR ADVANCED TECHNOLOGIES
Volume 28, Issue 1, Pages 28-34Publisher
WILEY-BLACKWELL
DOI: 10.1002/pat.3851
Keywords
polyimide foams; chopped carbon fiber; composite; mechanical properties
Categories
Funding
- Overall Scientific and Technological Innovation Program of Shaanxi Province [2013SZS17-Z01]
- National Science Foundation of Shaanxi Province [2015JM5231]
Ask authors/readers for more resources
In this study, a series of reinforced polyimide (PI)/carbon fiber (CF) composite foams were fabricated through thermal foaming of polyester ammonium salt (PEAS) precursor powders. The PEAS precursor powders containing different contents of chopped CF were synthesized from benzophenone-3,3,4,4-tetracarboxylic dianhydride (BTDA) and 4,4-diaminodiphenyl ether (ODA). The effects of different CF loadings on foaming behavior of PEAS/CF composite precursor powders, final cellular morphology, and physical properties of PI composite foams were investigated. The results revealed that the chopped CF acted as nucleation agent in the foaming process. The dispersion of CF can be evaluated using digital microscope. It is interesting to find that the chopped CF were highly oriented along the direction of cell arrises. As a result, the mechanical properties of PI foams were significantly enhanced owing to the incorporation of chopped CF. Furthermore, the thermal stability of PI composite foams were also slightly improved owing to fine dispersion of CF. In addition, the PI/CF composite foam shows uniform cell size distribution and the best comprehensive physical properties as chopped CF loading at around 6wt%. Copyright (c) 2016 John Wiley & Sons, Ltd.
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