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文章编号： 16726987（2018）01005405； DOI： 10.16351/j.16726987.2018.01.009
李婧璇， 朱海涛*， 雷清泉
(青岛科技大学 材料科学与工程学院，山东 青岛 266042)
摘要： 以石墨烯、碳纤维、炭黑为导热填料，球形氧化铝和二甲基硅油为导热基体通过简单混磨制备了一系列导热硅脂。用扫描电子显微镜、透射电子显微镜等手段对导热填料进行表征。通过对球形氧化铝进行颗粒级配、加入碳材料来提高导热硅脂的导热系数。结果表明：不同粒径的球形氧化铝颗粒级配能够提高导热硅脂的导热系数；与其他碳材料相比，在加入相同质量时，石墨烯能够更好地提高导热硅脂的导热系数，导热系数随着石墨烯加入量的增加而增大，导热系数最大值为1223 W·（m·K）-1。
关键词： 导热硅脂; 碳材料; 颗粒级配
中图分类号： O 063文献标志码： A
引用格式：李婧璇， 朱海涛， 雷清泉. 氧化铝/碳材料导热硅脂的研究\[J\]. 青岛科技大学学报（自然科学版）， 2018， 39（1）： 5458.
LI Jingxuan， ZHU Haitao， LEI Qingquan. Study on alumina/carbon material thermal grease\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2018, 39(1)： 5458.
Study on Alumina/Carbon Material Thermal Grease
LI Jingxuan， ZHU Haitao， LEI Qingquan
(College of Materials Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
Abstract: A series of thermal grease were prepared via facile milling process with spherical alumina and dimethylsilicone oil as conductive substrates, grapheme, carbon fiber and carbon black as conductive fillers. The conductive fillers were characterized with scanning electron microscope and transmission electron microscope. The grain composition of alumina particles with different size and the addition of carbon materials were applied to improve the thermal conductivity of the thermal grease. The results show that the grain composition of alumina particles with different size can increase the properties of the thermal grease. Compared with other carbon materials, graphene can increase the thermal conductivity significantly at the same loading fraction. The thermal conductivity of the thermal grease increases with the increase of graphene loading. The highest thermal conductivity is 1223 W·（m·K）-1.
Key words: thermal grease; carbon material; particle distribution
收稿日期： 20160705
基金项目： 国家自然科学基金项目（51472134）.
作者简介： 李婧璇（1992—），女，硕士研究生.*通信联系人.
