化工学报2019，Vol.70Issue(z2)：76-84,9.DOI:10.11949/0438-1157.20190493
基于热成像的背胶石墨膜面向热导率测试方法
Measurement of in-plane thermal conductivity of glued graphite film based on thermal imaging
摘要
Abstract
Graphite film is widely used in heat dissipation of heat-generating devices in electronic equipment. In-plane thermal conductivity is the key parameter which describes the heat transfer performance. However, currently only the graphite bare material data is provided in the industry, and the glued graphite film cannot be tested. It brings great inconvenience to thermal design and product quality management. In this paper, a thermal imaging-based steady-state test method for the thermal conductivity of glued graphite film is proposed. The sample is directly adhered to the flat surface which is heated by electric heating film. The temperature gradient is integrated along a loop to eliminate the influence of non-uniform thermal flow, and the thermal loss on the surface and bypass are reduced by calibration. Experiments based on a variety of glued graphite film products and metal sheets with reference data verified the validity of the method. The comparison between the test data of the glued graphite film and the bare graphite material parameters showed that great difference may exist, indicating that the nominal performance and actual performance of the graphite film product may be significantly different, and that test on glued graphite film rather than bare material is necessary.关键词
石墨膜/热导率/热成像/环路积分/热损失标定/稳态/传热/复合材料Key words
graphite film/ thermal conductivity/ thermal imaging/ loop integration/ thermal loss calibration/ steady state/ heat transfer/ composites分类
通用工业技术引用本文复制引用
侯德鑫,陈玥,叶树亮..基于热成像的背胶石墨膜面向热导率测试方法[J].化工学报,2019,70(z2):76-84,9.基金项目
浙江省自然科学基金项目(LY18F030011) （LY18F030011）
