高含量银基导电胶的制备与性能研究  

Fabrication and property investigation of high-content silver-based conductive adhesives

作　　者：王传博 陈亚 门传玲[1] 邸江涛[2] 包健 敖毅伟 刘海东 WANG Chuanbo;CHEN Ya;MEN Chuanling;DI Jiangtao;BAO Jian;AO Yiwei;LIU Haidong(School of Energy and Power, University of Shanghai for Science and Technology, Shanghai 200093, China;Advanced Materials Department, Suzhou Institute of Nanotechnology and Nano-Bionics,Chinese Academy of Sciences, Suzhou 215123, China;Changzhou Juhe New Materials Co., Ltd., Shanghai 213000, China;Xi'an Jiaotong University, Xi'an 710049, China)

机构地区：[1]上海理工大学能源与动力学院,上海200093 [2]中科院苏州纳米技术与纳米仿生研究所先进材料部,江苏苏州215123 [3]常州聚和新材料股份有限公司,上海青浦213000 [4]西安交通大学,西安710049

出　　处：《功能材料》2021年第3期3021-3025,共5页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(21975281)。

摘　　要：以90%(质量分数)银含量,10%(质量分数)树脂为基体制备出高银含量,高性能的环氧导电胶。采用0.025 mol/L KI试剂对银粉进行简单的表面处理,原位取代银粉表面的部分润滑剂并且与银粉表面的氧化银发生反应。在日光照射条件下原位生成小尺寸的银纳米粒子,这些小尺寸的银纳米粒子在固化过程中,会发生明显的烧结现象,增加银粉中相邻银微米片和银微米球之间的相互接触,从而可以显著降低导电银胶的体电阻率。相比于未处理的银粉制成的导电银胶,其体电阻率降低了26%,线电阻降低了8%,将其应用在光伏电池板上,极大的提高了其导电性能。In this work,we prepare the conductive silver adhesive by using 90 wt.%silver powder with 10 wt.%epoxy matrix in order to produce a high-silver-content and high-performance conductive adhesive.We find silver nanoparticles would be produced by 0.025 mol/L KI solution surface treatment of the silver powder under an in situ chemical reaction between the surface lubricant and the oxidized silver triggered by sunlight.These nano-sized silver particles are then sintered together on the surfaces of the silver micro-flakes and nano-particle balls in the silver powder during curing,which effectively increases the contact area between the adja-cent silver micro-flakes and nanoparticle balls,leading to decreasing electrical bulk resistivity and line resistance of the as-produced silver/epoxy conductive adhesive.Compared with the adhesive without KI surface treatment,our treated ones show 26%and 8%decrease in the electrical bulk resistivity and line resistance,respectively.It is applied to the photovoltaic panel to greatly improve its electrical conductivity.

关 键 词：表面处理 润滑剂 90%(质量分数)银含量 导电银胶 体电阻率 线电阻 

分 类 号：TB333[一般工业技术—材料科学与工程]