采用分子动力学方法研究了功能化石墨烯在月桂酸-棕榈酸(LA-PA)复合相变材料中的传热性能。结果表明,相比直接掺杂石墨烯,功能化石墨烯在LA-PA体系中的分布更加均匀,显著提高了复合相变材料的导热性能,羟基化(OH)、氨基化(NH2)、羧基化(COOH)石墨烯导热系数分别提高了19.5%、21.9%和27.1%,界面热阻分别降低48.8%、52.84%和76.78%。该研究结果将为有机复合相变材料的传热性能改善提供有益的参考。
The heat transfer performance of functionalized graphene in lauric acid-palmitic acid (LA-PA) composite phase change materials was investigated using molecular dynamics method.The results showed that compared with directly doped graphene,the distribution of functionalized graphene in the LA-PA system was more uniform,significantly improving the thermal conductivity of the composite phase change materials.The thermal conductivity of hydroxylated (OH),aminated (NH2),and carboxylated (COOH) graphene increased by 19.5%,21.9%,and 27.1%,respectively,and the interfacial thermal resistance decreased by 48.8%,52.84%,and 76.78%,respectively.The research results provide a valuable reference for improving the heat transfer performance of organic composite phase change materials.
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基金资助
河南省重点研发专项(241111320900)
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