Enhancement of Electrical Properties of Electrically Conductive Adhesives (ECAs) by Using Novel Aldehydes
Enhancement of Electrical Properties of Electrically Conductive Adhesives (ECAs) by Using Novel Aldehydes
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DOI：
10.1109/tcapt.2006.885940
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发表时间：
2006-11
影响因子：
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通讯作者：
Yi Li;K. Moon;Andrew Whitman;C. Wong
中科院分区：
文献类型：
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作者：
Yi Li;K. Moon;Andrew Whitman;C. Wong
为了改善导电胶的电性能，将不同类型的醛类，水杨醛和反肉桂醛，引入导电胶配方中。在固化过程中，醛作为还原剂，还原ECA中的金属氧化物。同时，醛类化合物可以消耗环境中的氧气，防止ECA中金属填料的氧化。醛类氧化产物（短链羧酸）可部分取代或去除银片表面的长链硬脂酸（C18）表面活性剂，增强电子捕获剂中银片之间的电子隧穿。因此，ECA中醛的多重作用显著提高了电导率。动态力学分析和热机械分析结果表明，ECAs的力学性能和物理性能也得到了改善
To improve the electrical properties of electrically conductive adhesives (ECAs), different types of aldehydes, salicylaldehyde and transcinnamaldehyde, were introduced into ECA formulations. During the curing process, the aldehydes acted as a reducing agent and reduced metal oxide in ECAs. At the same time, aldehydes could consume ambient oxygen and prevent the oxidation of the metal fillers in the ECA. The oxidation product of aldehydes, carboxylic acids with shorter molecular chains, could partially replace or remove the long chain stearic acid (C 18) surfactant on the lubricated Ag flakes and enhance the electrons tunneling between the Ag flakes in the ECAs. As such, the multiple effects of aldehydes in ECAs improved the conductivity significantly. Dynamic mechanical analysis and thermomechanical analysis studies indicated the improved performance for mechanical and physical properties of ECAs as well