Journal
COMPOSITES COMMUNICATIONS
Volume 7, Issue -, Pages 42-46Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.coco.2017.12.009
Keywords
Diphenyl phosphate; Benzimidazole; Polyimide; Thermal property; Mechanical property
Categories
Funding
- National Natural Science Foundation of China [21574060, 21374044]
- Major Special Projects of Jiangxi Provincial Department of Science and Technology [20114ABF05100]
- Technology Plan Landing Project of Jiangxi Provincial Department of Education [GCJ2011-24]
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How to achieve polyimide (PI) with better thermal and mechanical properties is a great challenge. In this study, flame-retardant diphenyl phosphate (DPhP), was incorporated in to heterocyclic diamine contained PI films to form phosphorus-polyimide composite films (P-PIs). The structures, element distribution, thermal and mechanical properties of P-PIs were characterized by FT-IR, SEM, EDS, DMA, TGA, and tensile test. The results indicated that the incorporation of phosphorus can significantly enhance the thermal and mechanical properties. The 5% weight loss temperature in air and the glass transition temperature (T-g) of P0.6-PI film were 577 and 405 degrees C, which were 50 and 16 degrees C larger than the neat PI film, respectively. In addition, the P0.6-PI film also showed improved tensile strength, modulus and toughness by 47%, 57% and 76%, respectively, as compared to the neat PI film.
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