The Properties of Polyimide Fibers Modified by Functionalized Muti-Wall Carbon Nanotubes Based on Friedel-Crafts Acylation

摘要：

　　Muti-wall carbon nanotubes (MWCNTs) were functionalized by grafting polyimide (PI) on their surface via Friedel-Crafts acylation.The functionalized MWCNTs (f-MWCNTs) showd less damages than unfunctionalized ones.The partially imidized polyamide acid as-spun fibers containing f-MWCNTs were prepared by wet spinning, and the final PI/f-MWCNTs composite fibers were obtained by heat treatment.The tensile strength of the PI based composite fiber containing 1.0 wt% f-MWCNTs was 818.3 MPa and the Youngs modulus was 9.26 GPa, which were about 81% and 88% higher than those of pure PI fiber, respectively.Besides, the thermal stability of PI/f-MWCNTs composite fibers was obviously improved.

关键词： Functionalized MWCNTs Friedel-Crafts acylation Polyimide Composite fiber Reinforcement

作者: Yu-feng Wang Jun Sun Li-xing Dai

作者单位: 1199 Ren-ai Rd, Suzhou Industrial Park, Suzhou, Jiangsu, China 1199 Ren-ai Rd, Suzhou Industrial Park, Suzhou, Jiangsu, China;College of Chemistry, Chemical Engine

会议类型: 国际会议

会议名称: The 2016 China Functional Materials Technology and Industry Forum (2016中国国际功能材料大会暨第九届中国功能材料及其应用学术会议)

会议地点: 重庆

会议语种:英文

页码: 490-496

在线出版日期: 2016-07-25（万方平台首次上网日期，不代表论文的发表时间）