Paraffin-based shape-stable phase change materials with graphene/carbon nanotube three-dimensional network structure
Paraffin-based shape-stable phase change materials with graphene/carbon nanotube three-dimensional network structure
复制标题
具有石墨烯/碳纳米管三维网络结构的石蜡基形状稳定相变材料
DOI：
10.1080/1536383x.2019.1611562
复制
发表时间：
2019-06-03
影响因子：
2.3
通讯作者：
Yang, Wenbin
中科院分区：
文献类型：
--
作者：
Cao, Qianyun;He, Fangfang;Yang, Wenbin
摘要 通过真空辅助浸渍法将石蜡引入到还原氧化石墨烯（rGO）/碳纳米管（CNTs）气凝胶中，制备了一种新型石蜡基形状稳定相变材料（SSPCM）。研究了3D网络结构中rGO与CNT的比例对石蜡基SSPCM的形貌、结构和性能的影响。 rGO/CNTs 3D网络结构具有高导热性，共同作为导热骨架。特别是，碳纳米管被用作二次导热填料，它可以很好地分散在SSPCM中，协同导热。 SSPCM 表现出高导热性和优异的形状稳定性。并且SSPCM的热导率可以通过调节气凝胶中rGO与CNT的比例来调节。这些结果表明3D rGO/CNTs气凝胶具有作为导热骨架的优势，可以赋予相变材料稳定的形状，从而实现相变材料在散热领域的应用。
Abstract A novel kind of paraffin-based shape-stable phase change materials (SSPCMs) was prepared by introducing paraffin into reduced graphene oxide (rGO)/carbon nanotubes (CNTs) aerogel via vacuum-assisted impregnation method. The effects of ratio of rGO to CNTs in 3D network structure on morphology, structure and property of paraffin-based SSPCMs were investigated. The rGO/CNTs 3D network structure with high thermal conductivity, served as thermally conductive skeleton together. In particular, CNTs was used as a secondary heat conductive filler, which could be well dispered in the SSPCMs to conduct heat synergistically. The SSPCMs exhibited high thermal conductivity and excellent shape-stability. And the thermal conductivity of SSPCMs can be regulated by adjusting the ratio of rGO to CNTs in aerogels. These results indicate that 3D rGO/CNTs aerogels have advantages as thermally conductive skeleton, and can endow phase transition materials with stable shape, so as to realize the application of phase change materials in the field of heat dissipation.