期刊
COMPOSITES SCIENCE AND TECHNOLOGY
卷 195, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2020.108205
关键词
-
资金
- China Scholarship Council (CSC) Program
In the current paper, a processable, very high-performance resin matrix is used to prepare carbon fiber reinforced composites. Polybenzoxazole is a high-temperature-resistant resin and can potentially be a good matrix for fiber reinforced composite. The current paper aims at preparing a very high thermal stability composites using a smart, amide-co-imide functional polybenzoxazine that is used as the precursor to prepare a polybenzoxazole composite. According to thermogravimetric analysis (TGA) and dynamic mechanical analysis (DMA), the char yield of neat polybenzoxazine and the Tg of polybenzoxazine/CF composite are 60.5% (at 800 degrees C) and 190 degrees C, respectively. Further improvement in properties are observed for polybenzoxazole: the char yield increases to 67.5% (at 800 degrees C) and Tg of the polybenzoxazole/CF composite increases to 435 degrees C. Besides, the storage modulus keeps almost constant until 350 degrees C.
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