用石墨烯浆料制备导热石墨膜的研究  

Preparation of thermal conductive graphite film from graphene slurry

作　　者：陈威[1,2] 杜鸿达[1] 孙璞杰 李琦 李召平 康飞宇[1,2] 

机构地区：[1]清华大学深圳研究生院广东省热管理工程与材料重点实验室,广东深圳518055 [2]清华大学材料学院新型陶瓷与精细工艺国家重点实验室,北京100084 [3]鸿纳(东莞)新材料科技有限公司,广东东莞523770

出　　处：《炭素技术》2016年第4期1-3,共3页Carbon Techniques

摘　　要：以石墨烯浆料为原料,采用抽滤的方法制成薄膜状石墨,比较研究了2种加压方式、热处理温度对石墨膜导热性能的影响。结果表明,高温热处理能有效提高石墨膜导热性能,1 200℃的热处理即可使热导率达到560 W/(m·K),但进一步提高温度直到3 000℃,再提高的效果有限。在1 800℃下热压可使热导率提高到910 W/(m·K),因此加压热处理对提高石墨薄膜的热导率效率更高。The graphite film was fabricated by pumping filtration with the graphene slurry. The graphite film was treated at different pressures and temperatures. The results showed that the thermal conductivity can be effectively improved by heat treatment. The thermal conductivity of 560 W/（m-K） was achieved at 1 200 ℃. However, the promotion effect was limited for higher temperature up to 3 000 ℃. Hot pressing made the thermal conductivity of graphite film increase to 910 W/（m. K）, nearly 3 times the graphite film without heat treatment.

关 键 词：石墨烯浆料 石墨膜 热处理 热压法 热导率 

分 类 号：TB383[一般工业技术—材料科学与工程]