高导热导电胶的制备与性能研究  

Preparation and properties of electrically conductive adhesive with high thermal conductivity

作　　者：左兴 Zuo Xing(Shanghai Plastics Research Institute Co.,Ltd.,Shanghai 201702,China)

机构地区：[1]上海市塑料研究所有限公司,上海201702

出　　处：《中国胶粘剂》2022年第10期47-50,56,共5页China Adhesives

摘　　要：采用一系列银粉制备了不同种类的导电胶。通过不同的配方来调配导电胶的黏度,并结合导电胶的相关性能,最终调试得到了A、B、C三种导电胶。对其黏度、热稳定性、固化性能、导电导热性和力学性能进行了研究。研究结果表明:三种导电胶的触变性均较好,热分解温度在390℃左右,耐温性较佳,固化温度都在220℃左右;三种导电胶的导热系数分别为27.31、31.93、29.23 W/(m·K),远超企标要求[>2 W/(m·K)];制备的三种导电胶在高温时的拉伸剪切强度相比传统导电胶要高50%,可充分满足导电胶的高温使用条件。综上所述,三种导电胶的常规性能均能满足企业标准,性能稳定,可应用于对热导率要求较高的高精密半导体封装领域。Different kinds of conductive adhesive was prepared by using a series of silver powder.Through different formulations to allocate the viscosity of conductive adhesive,and combined with the relevant properties of conductive adhesive,three kinds of conductive adhesive A,B and C were finally obtained through debugging.The viscosity,thermal stability,curing properties,electrical and thermal conductivity and mechanical properties were then studied.The research results showed that the thixotropy of three kinds of conductive adhesive was all good,the thermal decomposition temperature was about 390℃,the temperature resistance was excellent,and the curing temperature was all about 220℃.The thermal conductivity of three kinds of conductive adhesive was 27.31,31.93and 29.23 W/(m·K),respectively,which were far beyond the enterprise standard requirements[>2 W/(m·K)].The tensile shear strength of prepared three kinds of conductive adhesive at high temperatures was 50%higher than that of traditional conductive adhesive,which could fully meet the high temperature use conditions of conductive adhesive.In summary,the conventional performance of three kinds of conductive adhesive could meet the enterprise standard with stable performance,and they could be applied to the high-precision semiconductor packaging field with high requirements for thermal conductivity.

关 键 词：高填充银粉 微纳米银粉 导电胶 高导热 

分 类 号：TQ437.6[化学工程]