摘要
以羧基化多壁碳纳米管(MWCNTs)和吡咯单体为反应物,通过原位聚合方法成功制备了MWCNTs/聚吡咯(PPy)导电复合材料;通过傅里叶红外光谱仪、扫描电镜、热重分析仪及四探针电导仪对复合材料的结构与性能进行了表征。结果表明:羧基化MWCNTs高的长径比和大的比表面积使得复合材料比纯PPy的电导率和热稳定性能有显著提高;随着MWCNTs含量增加,复合材料的电导率和热稳定型均明显提高;当MWCNTs质量分数为20%时,复合材料的电导率达到11.1S·cm-1。
Polypyrrole(PPy)filled with carboxylated multi-walled carbon nanotubes(MWCNTs),MWCNTs/PPy electrical conductive composites,were prepared via in-situ polymerization using pyrrole monomer and MWCNTs as raw materials.The structure and properties of composites were characterized by means of Fourier transformed infrared spectroscopy(FITR),scanning electron microscopy(SEM),thermogravimetric analysis(TGA)and four probes conductivity testing.The result show that the large surface area and high aspect ratio of carboxylated MWCNTs made a noticeable improvement in electrical conductivity and thermal stability of the prepared composites compared with pure PPys.The conductivity and thermal stability of MWCNTs/PPy composites increased with a increase of MWCNTs content,when the MWCNTs content was 20wt%,it reached 11.1S·cm-1.
出处
《机械工程材料》
CAS
CSCD
北大核心
2015年第2期30-33 37,37,共5页
Materials For Mechanical Engineering
关键词
多壁碳纳米管
聚吡咯
导电复合材料
电导率
热稳定性能
multi-walled carbon nanotubes
polypyrrole
electrical conductive composites
electrical conductivity
thermal stability
