高导热石墨薄膜真空环境下导热性能测试验证  

Thermal conductivity test and verification of high thermal conductive graphite film under vacuum environment

作　　者：韦汉刚 翟载腾[1] 付鑫[1] 缪洪康 许志敏 史奇良 徐文杰 WEI Hangang;ZHAI Zaiteng;FU Xin;MIAO Hongkang;XU Zhimin;SHI Qiliang;XU Wenjie(Shanghai Institute of Satellite Engineering,Shanghai 201109,China)

机构地区：[1]上海卫星工程研究所,上海201109

出　　处：《航天器环境工程》2024年第4期516-520,共5页Spacecraft Environment Engineering

基　　金：国家重点研发计划项目(编号:2021YFB3701600)。

摘　　要：石墨薄膜具有极佳的导热性,可满足航天器内部高功耗电子设备的散热需求,但由于其易掉渣掉粉及稳定性差而不能直接应用于航天器热控系统。鉴于此,文章提出对石墨薄膜进行封装处理,并对制备出的封装石墨薄膜进行了性能测试,结果表明:石墨薄膜经过封装后解决了掉渣掉粉问题。随后将封装石墨薄膜应用于卫星单机设备,在轨和仿真数据表明:某型号的姿轨控扩展单元单机的最高温度较不使用封装石墨薄膜时下降了7℃,另一型号的应答机单机最高温度下降了8.5℃,达到控温目的。封装后的石墨薄膜适用于航天器设备且具有良好的散热性能。Excellent thermal conductivity of graphite film makes it a good candidate for the heat dissipation of high power consumption electronic equipment onboard spacecraft.However,due to its susceptibility to slagging,powdering,and poor stability,it may not be directly applied to spacecraft thermal control systems.Therefore,packaging the graphite film was proposed,and the performance of the prepared packaged graphite film was tested in this paper.It is shown that packaging the graphite film solves the problems of slagging and powdering.Subsequently,the packaged graphite film was utilized to a satellite single unit equipment.The inorbit and simulation data show that the maximum temperature of a posture-orbit control extension unit decreased by 7℃compared with that of unpackaged graphite film,and the maximum temperature of the other type of transponder decreased by 8.5℃,achieving the purpose of thermal control.Thus,the packaged graphite film may be potentially used in spacecraft equipment for desirable heat dissipation.

关 键 词：石墨薄膜 封装 热控系统 可靠性处理 航天器应用 

分 类 号：TJ04[兵器科学与技术—兵器发射理论与技术] V45[一般工业技术—材料科学与工程]