多壁碳纳米管表面改性对木塑复合材料性能的影响研究  

Study on Effects of Surface Modification of MWCNTs on Properties of Wood-Plastic Composites

作　　者：陈亚楠[1,2] 石超 张仲凤 CHEN Ya-nan;SHI Chao;ZHANG Zhong-feng(Central South University of Forestry and Technology,Green Furniture Engineering Technology Research Center of National Forestry and Grassland Administration,Green Home Engineering Technology Research Center in Hunan,Changsha 410004,P.R.China;Dongyang Furniture Institute,Jinhua 322100,P.R.China;China ECO Development Association,Beijing 100013,P.R.China)

机构地区：[1]中南林业科技大学,国家林业和草原局绿色家具工程技术研究中心,湖南省绿色家居工程技术研究中心,长沙410000 [2]东阳市家具研究院,金华322100 [3]中国林业生态发展促进会,北京100013

出　　处：《林产工业》2020年第11期15-21,共7页China Forest Products Industry

基　　金：国家自然科学基金(31872697);长沙市科技计划项目(kq1907099);中央财政支持地方科技发展专项(2019CT5008)。

摘　　要：首先采用超声对多壁碳纳米管(MWCNTs)进行表面处理,确定分散性能最佳的超声处理时间,再选用十二烷基苯磺酸钠(SDBS)、聚乙二醇(PEG2000)和聚乙烯吡咯烷酮(PVP)以及硅烷偶联剂A-171(乙烯基三甲氧基硅烷)结合超声振荡对多壁碳纳米管进行表面预处理。然后将改性后的多壁碳纳米管与高密度聚乙烯(HDPE)、木粉熔融共混、模压成型,并对制得的复合材料样品进行电、热、力学性能的相关测试。研究表明:经A-171表面改性的多壁碳纳米管木塑复合材料电阻率下降幅度最大,力学性能提升最高,经PEG表面改性的多壁碳纳米管木塑复合材料的热导率提升幅度最大。In this study,firstly,the ultrasonic method was used to treat the surface of multi-walled carbon nanotubes(MWCNTs),and then sodium dodecylbenzene sulfonate(SDBS),polyethylene glycol(PEG2000),polyvinylpyrrolidone(PVP)and silane coupling agent A-171(vinyl trimethoxysilane)were used to pretreat MWCNTs.Then MWCNTs,HDPE and wood powder were melt blended and molded to make wood-plastic composites(WPC),and the electrical,thermal and mechanical properties of the composite samples were tested.The results showed that the resistivity of WPC decreased the most and the mechanical properties improved the most after A-171 treatment,and the thermal conductivity of WPC increased the most after PEG treatment.

关 键 词：木塑复合材料 多壁碳纳米管 熔融共混 表面改性 材料性能 

分 类 号：TS653[轻工技术与工程]