中间相沥青基碳纤维电化学氧化表面处理的正交优化设计.pdfVIP

学兔兔 化 工 进 展 CHEMICAL INDUSTRY AND ENGINEERING PROGRESS 2009年第28卷第9期 中间相沥青基碳纤维电化学氧化表面处理的正交优化设计 宁 亮，迟伟东，刘 辉，沈曾民 (北京化工大学材料科学与工程学院，北京 100029) 摘 要：利用正交法研究了电化学氧化法对中间相沥青基碳纤维表面处理过程中各因素对表面处理效果的影响， 获得了优化的表面处理条件。利用傅里叶变换红外光谱扫描、x射线光电子能谱分析等手段，对优化的最佳条件 下的表面处理效果进行表征。实验结果表明：采用浓硝酸预处理后，再进行电化学氧化表面处理可使碳纤维复合 材料的层间剪切强度(ILSS)进一步提高，可达45．324 MPa，较未经硝酸预处理而直接进行电化学氧化表面处理 的碳纤维提高了24．1％，较未表面处理碳纤维提高了49．4％ 。 关键词：中间相沥青基碳纤维；正交设计；阳极氧化；预处理 中图分类号：TQ 342 文献标识码：A 文章编号：1000—6613(2009)09—1600—05 Orthogonal experimental design on the surface treatment of mesophase pitch-based carbon fiber with electrochemical oxidation NING Liang，CHI Weidong，LIUHui，SHENZengmin (Department of Materials Science and Engineering，Beijing University of Chemical Technology Beijing 100029，C~na) Abstract：Some major elements influencing the modification effect of mesophase pitch—based carbon fiber during the process of electrochemical oxidation are comparatively analysed by the orthogonal experiment．The optimized conditions for the electrochemical oxidation are characterized through Fourier transform infrared spectroscopy， X-ray photoelectron spectroscopy etc．An obvious improvement in the interlaminar shear strength(几SS)is achieved when the composite is prepared from the mesophase pitch．based carbon fiber being treated with HNO (65％)and electrochemical oxidation． Wit|l the optimized conditions，the ILSS of the composite can amount to 45．324MPa，which is 24．1％ higher than the process including electrochemical oxidation only an