Abstract: With the “Synergistic Effects”，such as “Bridging” and “Intercalating” between different fillers，the composite fillers/polyacrylate of electrically conductive pressure-sensitive adhesives has been prepared，which have excellent electrical conductivity，mechanical behaviour，and low filler ratio. The composite fillers consist of Carbon black （CB），Carbon fiber （CF），Carbon Nanotubes （CNTs） and Graphite nanosheets （NanoG） at some ratio. It was found that the comprehensive properties of the electrically conductive PSA reach the best when the composite fillers are made up of CF 3%、NanoG 5% and CNTs 5%. The conductivity of the electrically conductive PSA reaches 3.0×10?2S/cm，the 180°peel strength is 0.38kN/m and the shear strength is 0.42MPa.

Key words: composite fillers, synergistic effects, electrically conductive pressure-sensitive adhesives

摘要： 针对导电胶黏剂（ECA）在实用中所遇到填料组分单一、易团聚、对基体力学性能影响较大等问题，本文利用不同组分填料间的架桥、插层等“协同”效应，将一定比例的碳黑（CB）、碳纤维（CF）、碳纳米管（CNTs）、纳米石墨微片（NanoG）复合作为导电填料加入到聚丙烯酸酯压敏胶（PSA）中，采用溶液共混法超声分散，得到填料添加量小、导电性能和力学性能良好的导电PSA。运用多种检测手段对导电PSA的电学性质、微观结构、热稳定性和力学性能进行了分析。结果表明，复合填料组成为CF 3%、NanoG 5%、CNTs 5%（均为质量分数）时，导电PSA的电导率达到3.0×10?2S/cm，180°剥离强度为0.38kN/m。

关键词: 复合填料, 协同效应, 导电压敏胶