直写3D打印GNPs-MWCNT导电聚合物复合材料的制备及性能  

Preparation and Performance of GNPs-MWCNT Conductive Polymer Composite Materials by Direct Writing 3D Printing

作　　者：陈小军 胡翠雯 崔子怡 莫德云 连海山 江树镇 弓满锋 罗毅辉 CHEN Xiaojun;HU Cuiwen;CUI Ziyi;MO Deyun;LIAN Haishan;JIANG Shuzhen;GONG Manfeng;LUO Yihui(School of Mechanical and Electrical Engineering,Lingnan Normal University,Zhanjiang 524000,China;School of Aeronautics and Astronautics,Xiamen University,Xiamen 361000,China)

机构地区：[1]岭南师范学院机电工程学院,湛江524000 [2]厦门大学航空航天学院,厦门361000

出　　处：《机械工程材料》2020年第11期83-91,共9页Materials For Mechanical Engineering

基　　金：广东省基础与应用基础研究基金联合基金资助项目(2019A1515110637);广东省高校青年创新人才项目(2019KQNCX076);岭南师范学院自然科学人才专项(ZL2026)。

摘　　要：以石墨烯纳米片(GNPs)和多壁碳纳米管(MWCNT)为导电填料,以聚氧化乙烯(PEO)聚合物为基体制备得到复合材料薄膜,研究了不同GNPs/MWCNT填充量及配比对复合材料形貌、透光率、导电性和压阻特性的影响。结果表明:随GNPs/MWCNT填充量增加,复合材料表面包覆的PEO聚合物减少,导电填料连通性能增强;填充GNPs/MWCNT后,复合材料透光率降至50%以下,填料质量分数和配比变化对透光性的影响不大;随GNPs/MWCNT填充量和配比增加,复合材料导电性能显著提升;当GNPs/MWCNT填充质量分数为10%、配比(质量比)为1…1时,复合材料压敏性能最优,且其前驱体溶液稳定性较好,连续打印能力优良,能够进行大面积喷印制造。Composite films with graphene nanosheets(GNPs)and multi-walled carbon nanotubes(MWCNT)as conductive fillers and polyethylene oxide(PEO)polymer as matrix were prepared.The effects of different filling content and ratios of GNPs/MWCNT on morphology,light transmittance,electrical conductivity and piezoresistive properties of composite film were studied.The results show that with the increase of GNPs/MWCNT filling content,the PEO polymer on composite material surface decreased,and the connectivity of conductive fillers increased.The light transmittance of composite material was reduced to below 50%after filling with GNPs/MWCNT,and the change of filler mass fraction and ratio had little effect on the light transmittance.The electrical conductivity of composite material was significantly improved with the increase of GNPs/MWCNT filling content and ratio.The composite material showed the best pressure-sensitive performance when the GNPs/MWCNT filling mass fraction was 10%and the mass ratio was 1…1,and the test precursor solution had good stability,excellent continuous printing ability,and could be used for large-area printing.

关 键 词：柔性压力传感器 复合材料 石墨烯纳米片 多壁碳纳米管 直写3D打印 压阻特性 

分 类 号：TH165[机械工程—机械制造及自动化]