中国塑料 ›› 2017, Vol. 31 ›› Issue (1): 20-24 .DOI: 10.19491/j.issn.1001-9278.2017.01.004

• 材料与性能 • 上一篇    下一篇

湿敏性碳纳米管在聚氯乙烯抗静电复合材料中的研究与应用

付海1,代前飞1,龚维2   

  1. 1. 贵州师范大学2. 贵州师范大学材料与建筑工程学院
  • 收稿日期:2016-07-25 修回日期:2016-09-14 出版日期:2017-01-26 发布日期:2017-01-26

Study on Applications of HumiditySensitive Carbon Nanotubes for Antistatic Poly(vinyl chloride) Composites

  • Received:2016-07-25 Revised:2016-09-14 Online:2017-01-26 Published:2017-01-26

摘要: 利用碳纳米管(CNTs)与十六烷基三甲基溴化铵(CTAB)的吸附作用,制得具有湿敏特性的CNTs,并通过红外光谱分析和热失重分析确定其组成;将其作为抗静电剂加入到聚氯乙烯(PVC)中,通过模拟潮湿环境研究其湿敏特性对PVC/CNTs复合材料体积电导率的影响规律。结果表明,CNTs的有机化改性可降低其在复合材料中的逾渗阈值;当CNTs添加量为4 %(质量分数,下同)时,经过潮湿处理的PVC复合材料的电导率可升高4个数量级。

关键词: 聚氯乙烯, 碳纳米管, 抗静电性, 复合材料, 湿敏性

Abstract: In the study, humiditysensitive carbon nanotubes (CNTs) were prepared through adsorption between CNTs and cetyltrimethyl ammonium bromide (CTAB), and their chemical compositions were characterized by Fouriertransform infrared spectroscopy and thermogravimetric analysis. Such humiditysensitive CNTs were introduced into poly(vinyl chloride) (PVC) as a conductive additive. The effect of humiditysensitive CNTs on the volume conductivity of the composites was investigated under a simulated moisture environment. The results indicated that the PVC/CNTs composites achieved a percolation threshold at a low CNTs loading of 4 wt.% due to the surfacemodification of CNTs, and the electronic conductivity of the composites increased by four orders of magnitude after the absorbing moisture.

Key words: poly(vinyl chloride), carbon nanotube, antistatic ability, composite, humiditysensitivity