摘要
为了提高金属散热器的散热效率,利用自制超临界CO_(2)射流空化装置制备高质量的石墨烯纳米粉,将该纳米粉制备成高散热性能的石墨烯复合涂料,并且用喷涂法制备了表面具有石墨烯复合散热涂层的金属复合散热器。结果显示:利用超临界CO_(2)射流空化法剥离制备的石墨烯纳米粉纯度高、片层大、层数少,具有良好的导热性能,使用该石墨烯纳米粉体制备的石墨烯复合材料涂层,在室温环境下能够将原金属散热器的温度降低16.13℃,使金属散热器的散热效率提高15.6%~21.6%。
In order to prepare the high-quality graphene and promote its application in the metal radiator,the heat dissipation efficiency of the metal radiator was improved.The graphene nanoparticles were prepared by a self-made jet cavitation device of supercritical CO_(2),which were further used to prepare the graphene composite coating with high heat dissipation,and the metal composite radiators with the graphene composite cooling coating on the surface were fabricated by spray coating method.Results showed that the graphene nanoparticles prepared by jet cavitation of supercritical CO_(2)had high purity,large lamellae and few layers,presenting good thermal conductivity.The graphene composite coating prepared with using the graphene nanoparticles could reduce the temperature of the original metal radiator by 16.13℃and increased the heat dissipation efficiency of the metal radiators by 15.6%~21.6%at room temperature.
作者
雷达
孟根其其格
胡艳华
易汉平
孙丽雅
邹亚丽
LEI Da;MENG Gen-qiqige;HU Yan-hua;YI Han-ping;SUN Li-ya;ZOU Ya-li(Erdos College of Applied Technology,Ordos 017000,China;Ordos Zijin Innovation Research Institute,Ordos 017000,China)
出处
《材料保护》
CAS
CSCD
2021年第9期80-85,122,共7页
Materials Protection
基金
内蒙古自治区高校青年英才支持计划项目(NMJY-18-A15)
内蒙古自治区重点科技计划项目(201802017)
内蒙古自治区自然科学基金(2018MS01025)资助。
