【摘要】 使用浓硫酸和浓硝酸的混合溶液将多壁碳纳米管进行功能化处理后与聚丙烯腈(PAN)进行共混,采用湿法成形技术制备出了多壁碳纳米管/PAN导电纤维。采用扫描电镜、动态力学分析等手段对纤维的结构进行了分析,对纤维的物理机械性能及导电性能进行了测试。结果表明:添加碳纳米管5%时PAN纤维的强度、储存模量及玻璃化转变温度提高,断裂伸长率下降;添加经过功能化处理的碳纳米管可以有效地提高纤维的导电性能,当含量为5%时,电导率可达10-3S/cm。更多还原

【Abstract】 The composite fiber was produced with concentrated sulfuric and concentrated nitric acids treated multi-walled carbon nanotubes (MWNTs) and polyacrylonitrile (PAN) via conventional wet spinning. Mechanical properties of the composite fibers were investigated via SEM and DMA. The results showed that the strength, storage modulus and glass translation tempersture of the composite fiber containing 5 % content of MWNTs were improved compared with those of pure PAN. The conductivity of fiber with 5 % MWNTs was 10-3 S/cm.更多还原