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酸化碳纳米管棕榈酸复合相变储能材料的研究 被引量:9

EXPERIMENTAL STUDY ON PALMITIC ACID COMPOSITES CONTAINING CARBON NANOTUBES BY ACID TREATMENT
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摘要 本文对比了不同温度下强酸处理对碳纳米管(CNT)微结构的影响,并对处理后的CNT添加到熔融棕榈酸(PA)制得的复合物的热物性进行了研究,考察酸处理CNT对复合物热物性的影响。复合相变材料的相变温度和相变焓都较纯PA有所降低。对不同温度下各复合物的导热系数的研究表明在未发生相转变时随温度升高复合相变材料的导热系数变化不明显,而在相变温度附近相变材料的导热系数有突增现象。无相态转变温度区间,含酸处理碳纳米管的复合相变材料的导热系数较相同条件下纯PA有较大提高。 This paper compared the micro-structure of the acid treatment carbon nanotubes (CNT) at different temperature and investigated thermal properties of the palmitic acid composites containing the treated CNTs.The composites have substantially lower the phase change temperature and the enthalpy than the base palmitic acid matrix.The thermal conductivity of the composites did not change significantly with the increasing temperature away from the phase change temperature. The composites have greatly enhanced thermal conductivities compared to pure PA in both solid and liquid state.
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2010年第8期1389-1391,共3页 Journal of Engineering Thermophysics
基金 国家自然科学基金(No.50876058) 上海高校特聘教授(东方学者)岗位支持计划
关键词 相变材料 棕榈酸 碳纳米管 热物性 phase change material palmitic acid carbon nanotube thermal properties
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