含碳纳米管上浆剂改性碳纤维及其复合材料的研究  

Study of Modified Carbon Fiber with Carbon Nanotubes Sizing Agent and Its Composites

作　　者：陈超 周建萍[1] 洪珍[1] 黄军同 秦文贞 CHEN Chao;ZHOU Jian-ping;HONG Zhen;HUANG Jun-tong;QIN Wen-zhen(School of Material Science & Engineering,Nanchang Aeronautical University,Nanchang 330063,China)

机构地区：[1]南昌航空大学材料科学与工程学院

出　　处：《塑料工业》2019年第5期121-124,共4页China Plastics Industry

基　　金：航空科学基金(2016ZF56028)和(2016ZF56019);上海航天科技创新基金(SAST2017-116);博士启动基金(EA201701303)

摘　　要：利用上浆法和含多壁碳纳米管(MWCNT)的上浆剂对碳纤维(CF)进行表面改性,采用手糊成型和热压成型工艺制备CF复合材料,借助扫描电子显微镜(SEM)和电子万能试验机研究MWCNT对CF表面形貌及复合材料力学性能的影响。结果表明,MWCNT在上浆剂中的分散状态会直接影响MWCNT在CF表面分布的均匀性、对CF的改性效果及CF复合材料的力学性能。质量分数为0. 5%MWCNT上浆剂对CF的改性效果较好,经0. 5%MWCNT上浆剂改性CF复丝的拉伸强度与去浆CF相比提高了70. 8%,改性CF复合材料的弯曲强度和层间剪切强度与去浆CF复合材料相比分别提高了42. 8%和72. 9%。The surface of carbon fiber( CF) was modified by multi-walled carbon nanotubes( MWCNTs) sizing agent with sizing method. The methods of hand paste molding and hot pressing molding were used to manufacture CF composites. The effects of carbon nanotubes on the surface morphology of CF and mechanical properties of composites were investigated by scanning electron microscopy( SEM) and electronic universal testing machine. The experimental results show that the dispersion state of MWCNTs in the sizing agent directly affects the distribution of MWCNTs on the CF surface, modification effects on CF and mechanical properties of CF composites. When the content of MWCNTs in the sizing agent is 0. 5%,the modification effects of CF are better. The tensile strength of the CF modified by the 0. 5% MWCNTs sizing agent could increase by 70. 8% comparing with the desizing CF. The flexural strength and the interlaminar shear strength of modified CF composites could increase by 42. 8%and 72. 9%,respectively,comparing with the desizing CF composites.

关 键 词：多壁碳纳米管 上浆剂 碳纤维 复合材料 力学性能 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]