Conductivity Enhancement of Polymer Composites Using High-Temperature Short-Time Treated Silver Fillers
Composites Part A, Applied science and manufacturing(2017)
摘要
In this work, we develop an easy, convenient and effective high-temperature short-time annealing method to treat silver fillers through decomposing the silver oxide on the surface into silver nanoparticles and also in-situ paralyzing part of the surface lubricants to reduce the length of the tunneling distance between neighboring silver flakes. The modified micro silver flakes play a significant role in improving the electrical conductivity of the corresponding electrically conductive adhesives (ECAs), exhibiting the lowest resistivity of 1.28×10−4Ω·cm at 70wt% filler loading. This work suggests that the high-temperature short-time annealing strategy can greatly enhance the electrical conductivity of as-treated silver flakes based ECAs, which will allow them to be widely used in electronic packaging.
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关键词
High-temperature short-time annealing method,Electrically conductive adhesives (ECAs),Low electrical resistivity
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