文献类型：期刊文献

英文题名：Preparation of thermally conductive flexible liquid silicone rubber composites by magnetic field-induced self-assembly of Fe3O4@C

作者：Wang, Chaoyu Hao, Zhi Luo, Zhu Yang, Le Zhou, Qin Guo, Jiaxing

第一作者：Wang, Chaoyu

通信作者：Hao, Z[1]

机构：[1]Guizhou Univ, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang, Guizhou, Peoples R China

第一机构：Guizhou Univ, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Mat & Met, Guiyang 550025, Guizhou, Peoples R China.

年份：0

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000809334200001)】；

基金：Scientific Research Project of Introducing Talents of Guizhou University, Grant/Award Number: [2020] 53; The Science and Technology Department of Guizhou Province, Grant/Award Number: [2019] 2030

语种：英文

外文关键词：magnetism and magnetic properties; rubber; thermal conductivity

摘要：Efficient heat dissipation is very crucial for the performance, service life, and reliability of modern electronic devices. It is very challenging to improve heat dissipation efficiency through innovative material structure design. Therefore, in the work, dopamine (PDA) is used to coat the surface of graphite (C) with its excellent surface coating modification ability, so that the C surface has oxygen-containing groups to change its electronegativity, and Fe2+ and Fe3+ in the solution are attracted to the surface of C, and then in situ redox reaction occurs on the surface of C to generate magnetic graphite (Fe3O4@C). Fe3O4@C is uniformly dispersed into liquid silicone rubber (LSR) by solution blending, and Fe3O4@C performs integral directional filling in the LSR under the action of magnetic field (B = 140 mT), thus preparing Fe3O4@C/LSR composites. Through magnetic field orientation, the thermal conductivity of Fe3O4@C/LSR composites reach 1.25 W/m center dot K when the content of Fe3O4@C is 100 phr, which is 410% higher than that of pure LSR (0.2447 W/m center dot K). Infrared thermal imaging test shows that Fe3O4@C/LSR composites has good heat dissipation performance, Fe3O4@C/LSR composites have shown great potential in terms of flexibility and high thermal conductivity.