微胶囊铜粉对铜复合浆料性能的影响  

Influences of micro capsule copper powders on the properties of copper composite pastes

作　　者：时晶晶 屈银虎[1] 成小乐[1] 祁志旭 刘晓妮 周思君 祁攀虎 周宗团[1] SHI Jingjing QU Yinhu CHENG Xiaole QI Zhixu LIU Xiaoni ZHOU Sijun QI Panhu ZHOU Zongtuan(College of Mechanical and Electronic Engineering, Xi＇an Polytechnic University, Xi＇an 710048, China)

机构地区：[1]西安工程大学机电工程学院,西安710048

出　　处：《材料科学与工艺》2017年第5期80-85,共6页Materials Science and Technology

基　　金：陕西省科学技术研究发展计划-工业攻关攻关项目(2013K09-33);陕西省教育厅科学研究计划项目(15JK1332);陕西省教育厅服务地方专项计划项目(14JF007);西安市科技计划项目-产学研协同创新计划(CXY1517(3));西安工程大学研究生创新基金(CX201611)

摘　　要：为提高铜浆料的导电性,利用微胶囊技术在铜粉表面包覆液体石蜡,增强铜粉的抗氧化性,并添加少量导电性能优异的碳纳米管作为导电增强相,制备碳纳米管-铜复合浆料.利用四探针测试仪、扫描电镜等测试方法研究了液体石蜡含量对包覆铜粉性能的影响以及微胶囊铜粉作为主导电相,碳纳米管作为导电增强相对浆料导电性能的影响.结果表明:液体石蜡包覆含量为4 wt%的微胶囊铜粉具有良好的导电性和抗氧化性,其电导率为44.32%IACS;微胶囊铜粉作为碳纳米管-铜浆料的主导电相,制备浆料膜层电阻率为22.59 mΩ·cm,相比于未包覆的铜粉为主导电相制备的浆料膜层电阻率降低了12.44%;碳纳米管作为导电增强相所制备的浆料相比于纯铜浆料,电阻率降低31.74%.The copper powders were coated with liquid paraffin by micro capsule technology to enhance theantioxidation of copper powders. A small amount of carbon nanotubes with good conductivity were added asconductive reinforced phase to prepare the composite paste. Influences of paraffin content on the paraffin-coated copper powders were analyzed. Influences of micro capsule copper powders as main conductive phaseand carbon nanotubes as conductive reinforced phase were characterized by Four-Point probe, scanningelectron microscopy（SEM） and other testing methods. The results show that copper powders coated by 4 wt%paraffin have better conductive property and oxidation resistance. Its conductivity is 44.32 s/cm. The microcapsule copper powders are used as conductive phase to prepare the paste. Its resistivity is 22.59 Ω·cm,which is decreased by 12.44% compared to the copper paste. The resistivity of the paste with carbon nanotubesas conductive reinforced phase is decreased by 31.74% compared to the copper paste.

关 键 词：碳纳米管 微胶囊 铜粉 复合浆料 液体石蜡 

分 类 号：TM241[一般工业技术—材料科学与工程]