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一种石墨烯基导热硅胶及其制备方法
Authors
丁世云
刘兆平
+3 more
刘登峰
周旭峰
马经博
Publication date
22 February 2017
Publisher
Abstract
本发明提供了一种石墨烯基导热硅胶的制备方法,包括以下步骤:A)将经过表面改性的有机多孔聚合物浸渍于石墨烯浆料中,经过干燥、烧结,得到三维多孔复合材料,所述石墨烯浆料包括石墨烯、陶瓷材料和乙醇水溶液,所述陶瓷材料为碳化硅或氮化硼;B)将所述三维多孔复合材料与硅胶混合,固化,得到石墨烯基导热硅胶。本发明以有机多孔聚合物为模板,制备三维多孔复合材料,其中,石墨烯片层之间堆叠成为疏松的有一定间隙的微观结构,同时陶瓷材料附着在石墨烯片层上,二者之间存在一定的协同作用,形成完整的导热通路。结果表明,本发明制备得到的导热硅胶的热导率为5-7W-(m·k)
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Last time updated on 22/01/2018