新型炭材料（中英文）2026，Vol.41Issue(3)：749-756,8.DOI:10.1016/S1872-5805(26)61089-X
一个评估石墨导热膜散热性能的综合参数
A new parameter,heat conduction coefficient,for assessing the thermal conductivity of graphite films
郭志军 1郭孟川 2孙波 3陈仁政 4杨兰贺 4成会明5
作者信息
- 1. 清华大学深圳国际研究生院,广东 深圳,518055||苏州鸿凌达电子科技股份有限公司,江苏 苏州,215155||广东省热管理工程与材料重点实验室,广东 深圳,518055
- 2. 清华大学深圳国际研究生院,广东 深圳,518055
- 3. 清华大学深圳国际研究生院,广东 深圳,518055||广东省热管理工程与材料重点实验室,广东 深圳,518055
- 4. 苏州鸿凌达电子科技股份有限公司,江苏 苏州,215155
- 5. 中国科学院深圳先进技术研究院,广东 深圳,518055
- 折叠
摘要
Abstract
An evaluation of the thermal performance of graphite films used for electronic device cooling suggests using the heat conduction coefficient(thickness×in-plane thermal conductivity)as the core evaluation indicator.By establishing a thermal conductive film-device finite element model,the study investigates the factors that influence the in-plane thermal con-ductivity and thickness of graphite thermal conductive films on cooling performance.Simulations indicate that when the thick-ness of the graphite film is≤100 μm,the in-plane thermal conductivity and thickness have equivalent effects on cooling per-formance.Using the same conduction coefficient,the temperature distribution is basically the same for different combinations of in-plane thermal conductivity and thickness,while increasing the conduction coefficient significantly reduces the surface temperature of the device.When its value is too high,the gain in cooling performance decreases sharply and when the thick-ness exceeds 1 mm,there are changes in perpendicular thermal resistance and convective area,breaking the two-dimensional assumption.Experiments confirm that the heat conduction coefficient can effectively guide the selection of thermal conductive films,providing a theoretical basis for the thermal design of electronic devices.关键词
石墨导热膜/导热性能/热流因子/有限元仿真/薄型石墨Key words
Graphite thermal film/Thermal conductivity/Heat conduction coefficient/Finite element simulation/Thin type graphite分类
通用工业技术引用本文复制引用
郭志军,郭孟川,孙波,陈仁政,杨兰贺,成会明..一个评估石墨导热膜散热性能的综合参数[J].新型炭材料（中英文）,2026,41(3):749-756,8.
