Influence of Curing Procedures on the Electrical Properties of Epoxy-Based Isotropic Conductive Adhesives
In this paper,a typical isotropic conductive adhesives(ICAs)composed of an epoxy-based binder containing micro-sized silver flakes was prepared and the effects of different curing procedures on the electrical properties of conductive adhesives were investigated.The results showed that there a greater influence of the curing temperature on 55% silver fill loading,the volume resistivity of ICAs decreased to 4.7× 103 from 1.Ox1O3 cured at 180℃ and 250℃,respectively.However,there is almost no effect on the high silver fill loading.The in situ monitoring the variations in electrical resistance of ICAs with 65% silver fill loading was studied during the curing process,and it was found that the resistance reached to 1.99 Mil at 180℃ after cured for 27 min,and reached to 1.39 KΩ for 40 min,and 18.8 n for 60 min and the cooling process almost no effect on the electrical resistance of ICAs.The reasons for the dependence of bulk resistivity on temperatures were also discussed in terms of the dispersing of the silver flakes in ICAs by SEM.
Isotropic conductive adhesives curing volume resistivity silver flakes
Nana Xiong Zhiling Li Jingze Li Hui Xie Yuehui Wang
State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Microelectronics and Department of Chemistry and Biology,University of Electronic Science and Technology of China Zhongsh
国际会议
The 15th International Conference on Electronic Packaging Technology (ICEPT 2014) ) (第十五届电子封装技术国际会议)
成都
英文
373-377
2014-08-12（万方平台首次上网日期，不代表论文的发表时间）