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以石蜡和经硝酸处理过的碳纳米管(CNTs)为原料,苯为溶剂,采用真空渗透法制备了石蜡填充CNTs纳米胶囊复合材料,并设计了一个简易的热界面装置,对石蜡填充CNTs材料在电子设备热管理中的应用能力进行了测试。结果表明:石蜡成功填充到CNTs管内,且在CNTs管外基本没有残留的石蜡。在传热界面未涂抹二甲基硅油时,内外两侧最高温度的温差为4.7℃,而分别涂抹二甲基硅油、未经酸处理(20%)CNTs/二甲基硅油、酸处理后(20%)CNTs/二甲基硅油、(20%)石蜡填充CNTs/二甲基硅油时,其内外两侧最高温度的温差分别为3.8℃,3.1℃,3.1℃,2.2℃,说明将石蜡填充CNTs作为二甲基硅油中的散热填充物具有更好的散热效果,且增加了界面间的热反应速度和热稳定性。
Using paraffin wax and nitric acid-treated carbon nanotubes (CNTs) as raw materials and benzene as solvent, a series of paraffin-filled CNTs nanocomposite composites were prepared by vacuum infiltration method. A simple thermal interface device was designed. The application of thermal management in electronic equipment was tested. The results showed that paraffin wax was successfully packed into the CNTs tube, and there was almost no residual paraffin in the CNTs tube. In the heat transfer interface is not coated with simethicone, the temperature difference between the highest temperature on the inside and outside the side of 4.7 ℃, respectively, dope simethicone, without acid treatment (20%) CNTs / dimethicone, acid treatment 20%) CNTs / dimethicone, (20%) paraffin wax filled CNTs / simethicone, the maximum temperature difference between inside and outside the sides were 3.8 ℃, 3.1 ℃, 3.1 ℃, 2.2 ℃, CNTs as a heat-dissipating filler in dimethyl silicone oil has better heat dissipation effect, and increases the thermal reaction speed and thermal stability between the interfaces.