PBT/CNTs复合材料的制备及其导电性能  

Preparation and research of electrical property of polybutylene terephthalate / carbon nanotubes composites

作　　者：罗雷[1] 曾效舒[1] 刘震云[1] 魏嘉麒[1] 邬胜伟[1] 袁秋红[1] 

机构地区：[1]南昌大学机电工程学院,江西南昌330031

出　　处：《南昌大学学报（工科版）》2013年第4期331-334,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：江西省科技厅攻关项目(Z02727)

摘　　要：采用熔融共混法制备聚对苯二甲酸丁二醇酯(PBT)/碳纳米管(CNTs)复合材料,研究了不同分散工艺处理的原生CNTs和不同CNTs质量分数对复合材料表面电阻的影响。利用扫描电镜观察了处理后CNTs的分布状态和PBT/CNTs复合材料的微观形貌。结果表明:球磨分散使CNTs有更好的分散效果并更好地提高了复合材料的导电率;随着CNTs质量分数的不断增加,复合材料的表面电阻呈不断下降的趋势,导电阀值出现在CNTs质量分数约为4%时。Polybutylene terephthalate （PBT）/carbon nanotubes （ CNTs ） composites were prepared by melt blending method. The effects of the dispersion process as-CNTs treated via different and the content of CNTs on surface resistance of composites were studied. The dispersive state of treated-CNTs and micro-morphology of PBT/CNTs composites were observed by scanning electron microscopy （SEM）. The results showed that the CNTs had better disperse ability by ball milling dispersion. Therefore, it improved the conductivity and the surface resistance of the composites were decreased with the increasing of CNTs content, and the electrical percolation threshold formed when the mass fraction of CNTs was about 4%.

关 键 词：聚对苯二甲酸丁二醇酯 碳纳米管 表面电阻 球磨分散 气流分散 粉碎机粉碎 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]