刚玉型Al2O3与片状BN复合填充聚苯硫醚制备高导热复合材料
Preparation of high thermal conductivity composites by composite filling PPS with corundum alumina and flake BN
王晓芳 1陆嘉晟 1籍少敏 1霍延平 1赵经纬2
作者信息
- 1. 广东工业大学轻工化工学院,广东广州 510000
- 2. 广州天赐高新材料股份有限公司,广东广州 510006
- 折叠
摘要
以聚苯硫醚(PPS)为基体,刚玉型Al2O3与少量片状BN为复合导热填料,采用低温高压的模压工艺制备了Al2O3/PPS/BN高导热复合材料.研究了填料粒径及含量、PPS含量对复合材料导热性能和力学性能的影响,并确定了一种高导热Al2O3复合材料的制备工艺.采用扫描电子显微镜、导热测量仪、万能试验机等研究了试样的形貌、导热率及力学性能.结果表明:w(Al2O3)为89%,w(BN)为3%,w(PPS)为8%时,复合材料的导热率达5.44 W/(m·K),最高导热率是环氧树脂的21.76倍,且具有优异的力学性能.
Abstract
Polyphenylene sulfide(PPS)was used as polymer matrix,corundum alumina and a small amount of flake boron nitride(BN)as composite thermal conductive filler to prepare Al2O3/PPS/BN high thermal conductivity composites via low temperature and high pressure molding process.The effects of PPS content,particle size and content of filler on thermal conductivity and mechanical properties of the composites were studied.A preparation process of high thermal conductivity Al2O3 composite material was determined.The morphology,thermal conductivity and mechanical properties of the samples were systematically studied by scanning electron microscope,thermal conductivity measuring instrument and universal testing machine.The results show that the thermal conductivity of the composites is 5.44 W/(m·K),21.76 times than that of epoxy resin when the mass fraction of Al2O3,BN and PPS are 89%,3%,8%respectively.The mechanical properties of the composites are excellent.
关键词
聚苯硫醚/氮化硼/氧化铝/复合材料/导热性能Key words
polyphenylene sulfide/boron nitride/alumina/composite/thermal conductivity引用本文复制引用
基金项目
国家自然科学基金(21975055)
国家自然科学基金(U2001222)
国家自然科学基金(21975053)
广东省重点领域计划(2019A050510042)
出版年
2024
NETL
NSTL
万方数据