深圳大学学报（理工版）2018，Vol.35Issue(3)：278-284,7.DOI:10.3724/SP.J.1249.2018.03278
液晶功能化碳纳米管有机硅复合材料的制备与性能
Preparation and characterization of liquid crystal functionalized MWCNTs-organic silicone nanocomposites
摘要
Abstract
This study aims to improve the thermal conductivity and mechanical properties of organic silicone composites,prevent the agglomeration of carbon nanotubes,and improve their compatibility with polymers.The MBBA-MWCNTs-silicone nanocomposites are prepared via a nematic liquid crystal N-(4'-methoxybenzylidene)-4-butylaniline (MBBA) molecularly modified multi-walled carbon nanotubes (MWCNTs).The results show that MBBA interacts with MWCNTs via a non-covalent π-π interaction,which not only improves the dispersion of MWCNTs in silicone resin but also guarantees the good compatibility between MWCNTs and the silicone resin matrix.While the mass fraction of MWCNTs is 1.0％,the tensile strength of MBBA-MWCNTs-organic silicone nanocomposites are increased to be 6.78 MPa,which are enhanced by 500％ and 36％,respectively,compared to those of organic silicone and MWCNTs-organic silicone nanocomposites.The thermal conductivity of the silicone resin filled with the MBBA-MWCNTs reaches 0.561 5 W/(m ·K) at the mass fraction of 14.0％,which is as about 4 times as that of neat silicone material and 54％ over that of MWCNTs-organic silicone nanocomposite with the same filler mass fraction.关键词
聚合物基复合材料/导热材料/碳纳米管/有机硅/液晶/力学性能/导热性能Key words
polymer composites/thermal conductive materials/carbon nanotube/silicone/liquid crystal/mechanical properties/thermal conductivity分类
通用工业技术引用本文复制引用
贵大勇,刘灿群,宗阳阳,郑进宝,喻思,颜晓梅,王明良..液晶功能化碳纳米管有机硅复合材料的制备与性能[J].深圳大学学报（理工版）,2018,35(3):278-284,7.基金项目
Natural Science Foundation of Guangdong Province (2017A030313322)广东省自然科学基金资助项目(2017A030313322) （2017A030313322）
