Chemical interaction between carbon fibers and surface sizing
Chemical interaction between carbon fibers and surface sizing
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DOI：
10.1002/app.35226
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发表时间：
2012-05-05
影响因子：
3
通讯作者：
Gu, Yizhuo
中科院分区：
文献类型：
--
作者：
Dai, Zhishuang;Zhang, Baoyan;Gu, Yizhuo
聚丙烯腈(PAN)基碳纤维表面官能团和纤维表面施胶中的官能团在复合材料固化过程中容易发生反应，影响碳纤维与树脂之间的渗透和粘结。对T300B-3000-40B纤维和纤维表面上浆进行了不同温度的热处理，并用傅里叶变换红外光谱研究了纤维表面上浆和抽出浆料在热处理后的结构变化。结果表明，随着热处理温度的升高，纤维表面施胶和抽提上浆中环氧基团的浓度均降低，200℃处理后环氧基浓度降至零，且在相同条件下，抽提上浆中的环氧基浓度低于处理后的纤维表面上浆，说明碳纤维与纤维表面上浆的反应速率高于纤维表面上浆体系的反应速率。X-射线光电子能谱分析表明，当热处理温度为150℃时，经过退浆处理的碳纤维表面的C-O键和活性碳原子的含量最高，这证明了碳纤维与纤维表面上浆的反应。(C)2011年威利期刊公司J Appl Polym Sci，2012
Functional groups on the surface of Polyacrylonitrile (PAN)-based carbon fibers and in fiber surface sizing are likely to react during the curing process of composites, and these reactions could affect the infiltration and adhesion between the carbon fibers and resin. T300B-3000-40B fibers and fiber surface sizing were heat-treated at different temperatures, and the structural changes of both the fiber surface sizing and extracted sizing after heat treatment were investigated by Fourier transform infrared spectroscopy. The results show that the concentration of epoxy groups in both the fiber surface sizing and extracted sizing decreased with increasing heat-treatment temperature and decreased to zero after treatment at 200 degrees C. The concentration of epoxy groups in the extracted sizing was lower than that of the fiber surface sizing after treatment under the same conditions; this indicated that the rate of reaction between the carbon fibers and fiber surface sizing was higher than the reaction rate of the fiber surface sizing system. X-ray photoelectron spectroscopy analysis reveals that the content of C-O bonds and activated carbon atoms on the surface of the desized treated carbon fibers was the highest when the heat-treatment temperature was 150 degrees C; this proved the reaction between the carbon fibers and the fiber surface sizing. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012