摘要
有机相变材料具有潜热高、过冷度小、无相分离和成本较低等优良特性,已广泛应用于相变储能领域,但其热导率低。碳基材料作为性能优异的导热增强剂,具有热导率高、比表面积大、质量轻、可塑性强等特点,而且易被加工成不同形状,具有良好的应用场景适应性,广泛用于相变储能领域增强导热性能。该文综述了一维、二维、三维碳基材料改性有机相变材料的研究进展,其中,三维碳基材料,或可构筑为三维结构的低维碳基材料,具有更为优异的综合性能,一方面三维骨架结构可为相变材料构建连续的导热通路,提高相变材料的热导率;另一方面碳基材料的多孔结构能够提供较强的表面张力和毛细管力,有效防止相变材料的液相泄漏。总结了碳基材料在改善有机相变材料热导率、液相泄漏、热性能等方面取得的效果。指出了碳基材料改性有机相变材料在实际推广应用中可能存在的问题,并展望了未来的发展方向。
Though organic phase change materials have been widely used in the field of phase change energy storage due to their high latent heat,small subcooling,no phase separation and low cost,the materials show low thermal conductivity.Carbon-based materials,with the characteristics of high thermal conductivity,large specific surface area,light mass and strong plasticity,as well as easy processity into various shapes and good application scenarios adaptability,have been largely used in the field of phase change energy storage to enhance thermal conductivity.Herein,the research progress on one-dimensional,two-dimensional and three-dimensional carbon-based materials modified organic phase change materials was reviewed,with the three-dimensional carbon-based materials or low dimensional carbon-based materials that could be constructed into three-dimensional structures found to outperform comprehensively,which may be attributed to the three-dimensional skeleton structure providing a continuous heat conduction path thus improving the thermal conductivity of phase change materials,and the porous structure providing strong surface tension and capillary force thus effectively preventing liquid phase leakage of phase change materials.The effects of carbon-based materials on enhancing the thermal conductivity,liquid phase leakage and thermal properties of organic phase change materials were then summarized.Finally,the possible challenges in practical application was pointed out and future development directions of carbon-based materials modified organic phase change materials were discussed.
作者
何媚质
肖志豪
陈嘉祥
边晶
谢培靖
HE Meizhi;XIAO Zhihao;CHEN Jiaxiang;BIAN Jing;XIE Peijing(College of Energy and Power Engineering,Changsha University of Science&Technology,Changsha 410114,Hunan,China)
出处
《精细化工》
2025年第1期27-38,共12页
Fine Chemicals
基金
国家自然科学基金项目(52106033)
湖南省教育厅项目(23C0147)
长沙理工大学研究生实践创新与创业能力提升计划项目(CLSJCX23089)
湖南省大学生创新创业训练计划项目(2023057)。
关键词
有机相变材料
碳基材料
热导率
强化导热
液相泄漏
organic phase change materials
carbon-based materials
thermal conductivity
heat conduction enhancement
liquid phase leakage
