高等学校化学学报2016，Vol.37Issue(6)：1216-1223,8.DOI:10.7503/cjcu20150939
玻璃纤维对碳纳米管填充聚合物/热塑性聚氨酯共混体系导电性能的影响
Effects of Glass Fiber on Electrical Conductivities of Multiwalled Carbon Nanotube-filled Polymer/Thermoplastic Polyurethane Blends
张博媛 1郭朝霞 1于建1
作者信息
- 1. 清华大学化工系，先进材料教育部重点实验室，北京100084
- 折叠
摘要
Abstract
The effects of epoxy-functionalized glass fiber( GF) on the electrical conductivities of polypropylene ( PP)/thermoplastic polyurethane ( TPU )/multiwalled carbon nanotube ( MWCNT ) , poly ( methyl methacry-late)(PMMA)/TPU/MWCNT and poly(lactic acid) (PLA)/TPU/MWCNT composites were investigated. The electrical resistivities of polymer/MWCNT composites increase with the addition of TPU due to the selective location of MWCNTs in the TPU phase. After the addition of GF, the electrical resistivities of polymer/TPU/MWCNTs composites are significantly reduced by up to 13 orders of magnitude, indicating that the addition of GF is a universal and effective method to improve the electrical conductivities of MWCNTs-filled polymer blends with TPU as the dispersed phase. The mechanism for resistivity reduction of GF-filled system is mainly the formation of TPU coated GF structure which serves as long conductive rod with high aspect ratio, facilitating the construction of conductive paths, although the effective concentration of the conductive species increases because of the volume-exclusion effect of GF. It is found that the contents of GF and MWCNTs are important factors affecting the electrical conductivities of the composites.关键词
热塑性聚氨酯/玻璃纤维/多壁碳纳米管/导电性能Key words
Thermoplastic polyurethane/Glass fiber/Multiwalled carbon nanotube/Conductivity分类
化学化工引用本文复制引用
张博媛,郭朝霞,于建..玻璃纤维对碳纳米管填充聚合物/热塑性聚氨酯共混体系导电性能的影响[J].高等学校化学学报,2016,37(6):1216-1223,8.
