新型炭材料2020，Vol.35Issue(1)：66-72,7.DOI:10.1016/S1872-5805(20)60476-0
纳米碳管改善氧化铝填充硅橡胶复合材料的导热与机械性能
Improving the thermal and mechanical properties of an alumina-filled silicone rubber composite by incorporating carbon nanotubes
摘要
Abstract
Carbon nanotubes ( CNTs) can be used to improve the thermal and mechanical properties of composites because of their excellent characteristics. Methyl vinyl silicone rubber matrix composites filled with alumina ( Al2 O3 ) powder and CNTs were fabricated by a conventional mechanical blending method. The effects of the mass fraction of Al2 O3 powder, surface modification of Al2 O3 powder by silanization with dodecyltrimethoxysilane and the addition of CNTs on the thermal conductivity, Young's modulus and hardness of the composites were investigated. Results showed that a higher mass fraction of Al2 O3 powder results in a higher thermal conductivity of the composites. When the mass fraction of Al2 O3 powder was fixed, the thermal conductivity, Young’s modulus and hardness of the composites were obviously improved by surface modification of the powder and adding a small amount of CNTs. A combination of the modified Al2 O3 filler and CNT filler improves the interfacial interaction between the fillers and rub-ber matrix by the formation of better heat conduction channels and network structures in the rubber matrix, thereby improving the thermal conductivity and mechanical properties of the composites.关键词
纳米碳管/氧化铝/硅橡胶/热导率/协同效应Key words
Carbon nanotubes/ Alumina/ Silicone rubber/ Thermal conductivity/ Synergistic effect分类
通用工业技术引用本文复制引用
林嘉隆,苏诗茗,贺艳兵,康飞宇..纳米碳管改善氧化铝填充硅橡胶复合材料的导热与机械性能[J].新型炭材料,2020,35(1):66-72,7.基金项目
国家自然科学基金(51672156). National Natural Science Foundation of China (51672156). （51672156）
