软硬段结构对填充MWNT/聚氨酯导电薄膜气敏响应性的影响  

Effect of Soft and Hard Segment Structure on Gas Sensitivity of MWNTs Filled PU Conductive Thin Film

作　　者：张新建[1] 罗延龄[2] 牛莉[1,2] 段贤勇[1] 

机构地区：[1]安徽机电职业技术学院机械工程系,安徽芜湖241002 [2]陕西师范大学材料科学与工程学院,陕西西安710062

出　　处：《塑料工业》2017年第4期44-47,共4页China Plastics Industry

基　　金：安徽高校自然科学研究重点资助项目(KJ2015A382);2015年院级自然科学研究项目(2015yjzr01);安徽省2017年高校优秀青年人才支持计划项目(gxyqZD2017103)

摘　　要：分别用不同的软段结构和硬段结构合成了一系列聚氨酯(PU),并填充多壁碳纳米管制成多壁碳纳米管(MWNT)/PU导电薄膜。测试其对四种不同溶剂(苯、无水乙醚、丙酮和氯仿)的气敏响应性,研究了不同软硬段及其结构式对导电薄膜气敏响应性的影响。并用傅里叶变换红外光谱对PU导电薄膜进行了结构和性质表征。结果表明,当采用端羟基聚丁二烯-丙烯腈为软段、三羟基甲基丙烷为硬段,并用羟基碳纳米管为填料时,合成的PU导电薄膜具有较好的气敏响应性。A series of functionalized multi-walled carbon nanotubes （MWNTs） /polyurethane （PU） composites conducting films were constructed by different soft segments and hard segments. The gas sensing performances of the prepared films were evaluated using the vapors of different solvents （ benzene, anhydrous ether, acetone and chloroform）. The influence of various soft and hard segments on the gas response of the film was investigated. The morphologies and structural characterization were conducted by means of Fourier infrared spectroscopy. The experimental results indicate that when the functionalized MWNTs/PU composites conducting film filled with MWNTs-OH with hydroxy-terminated butadiene-acrylonitrile copolymer （ HTBN ） as a soft segment and trimethylolpropane （TMP） as a hard segment has good gas sensitivity.

关 键 词：软段 硬段 导电复合材料 气敏响应性 聚氨酯导电薄膜 

分 类 号：TB332[一般工业技术—材料科学与工程] TB383.2