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 PolymerComposite Materials by Direct Writing 3D Printing
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。
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
flexible pressure sensor
composite material
graphene nanosheet
multi-walled carbon nanotube
direct writing 3D printing
piezoresistive property
Abstract
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.
中图分类号 TH165 DOI 10.11973/jxgccl202011015
所属栏目 专题报道(增材制造技术)
基金项目 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）
收稿日期 2020/7/22
修改稿日期 2020/10/6
网络出版日期
作者单位点击查看
备注陈小军(1986-),男,江西瑞金人,讲师,博士
引用该论文: CHEN Xiaojun,HU Cuiwen,CUI Ziyi,MO Deyun,LIAN Haishan,JIANG Shuzhen,GONG Manfeng,LUO Yihui. Preparation and Performance of GNPs-MWCNT Conductive PolymerComposite Materials by Direct Writing 3D Printing[J]. Materials for mechancial engineering, 2020, 44(11): 83～91
陈小军,胡翠雯,崔子怡,莫德云,连海山,江树镇,弓满锋,罗毅辉. 直写3D打印GNPs-MWCNT导电聚合物复合材料的制备及性能[J]. 机械工程材料, 2020, 44(11): 83～91
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【9】KING M G,BARAGWANATH A J,ROSAMOND M C,et al.Porous PDMS force sensitive resistors[J].Procedia Chemistry,2009,1(1):568-571.
【10】FAN Y J,MENG X S,LI H Y,et al.Stretchable porous carbon nanotube-elastomer hybrid nanocomposite for harvesting mechanical energy[J].Advanced Materials,2017,29(2):1603115.
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【13】LU N S,LU C,YANG S X,et al.Highly sensitive skin-mountable strain gauges based entirely on elastomers[J].Advanced Functional Materials,2012,22(19):4044-4050.
【14】KIM K,LEE K R,LEE D S,et al.A silicon-based flexible tactile sensor for ubiquitous robot companion applications[J].Journal of Physics:Conference Series,2006,34:399-403.
【15】PAN L J,CHORTOS A,YU G H,et al.An ultra-sensitive resistive pressure sensor based on hollow-sphere microstructure induced elasticity in conducting polymer film[J].Nature Communications,2014,5:3002.
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