混杂三维网状石墨烯相变复合材料的制备与热性能分析

doi:10.12028/j.issn.2095-4239.2017.0070

储能科学与技术 ›› 2017, Vol. 6 ›› Issue (4): 675-680.doi: 10.12028/j.issn.2095-4239.2017.0070

混杂三维网状石墨烯相变复合材料的制备与热性能分析

王亚，张东

同济大学材料科学与工程学院，上海 201800

收稿日期:2017-05-24 修回日期:2017-06-14 出版日期:2017-07-01 发布日期:2017-07-01
通讯作者: 张东，教授，研究方向为储能材料及其应用、建筑节能和功能材料、石墨烯及其复合材料、智能材料，E-mail：Zhangdng@tongji.edu.cn。
作者简介:王亚（1991—），男，硕士研究生，研究方向为石墨烯基储能材料，E-mail：wangya@tongji.edu.cn

Preparation and thermal properties of hybrid composites made of a phase change material and three-dimensional networked graphene

WANG Ya, ZHANG Dong

School of material science and engineering, Tongji University, Shanghai 201800, China

Received:2017-05-24 Revised:2017-06-14 Online:2017-07-01 Published:2017-07-01

摘要/Abstract

摘要： 将氧化石墨烯和石墨烯纳米片通过水热法制备成混杂三维网状石墨烯。以棕榈酸作为相变材料，通过真空浸渍法，棕榈酸与混杂三维网状石墨烯复合得到混杂三维网状石墨烯相变复合材料。系统研究石墨烯纳米片的种类与掺量对相变复合材料热性能的影响，并对混杂三维网状石墨烯的导热增强机理进行分析。研究结果表明：随着石墨烯纳米片掺量的增加，相变复合材料的热导率提高。石墨烯纳米片的种类影响相变复合材料的热性能。掺加M系列石墨烯纳米片的混杂三维网状石墨烯能够显著提高相变材料热导率，但相变潜热与相变温度变化较小。当石墨烯纳米片的掺量为8%时，掺加M系列石墨烯纳米片的相变复合材料的热导率为0.634 W/(m•K)，与棕榈酸相比，热导率增大3.2倍。

关键词: 三维网状石墨烯, 相变材料, 热导率, 热性能

Abstract: Hybrid composites made of three-dimensional (3D) networked graphene and a phase change material (PCM) were synthesized by hydrothermal processing of graphene nanoplates (GNPs) and graphene oxide. Palmitic acid (PA) was used as the PCM. The composite PCM were prepared by vacuum impregnation. The effects of the type and content of GNPs on the thermal properties of the composite PCMs were investigated. The results showed that an increase in the content of GNPs increased the thermal conductivity of the composites PCMs. The type of GNPs had an influence on the thermal properties of the PCM composites The M-type of GNPs had the most significant effect on the thermal conductivity of the composite PCMs. No obvious changes to the latent heat and the phase change temperature were observed. When the content of GNPs was 8%, the thermal conductivity was 0.634 W/(m•K), which was almost a 3-fold increase compared with the PA. The heat transfer enhancement mechanisms were also discussed.

Key words: graphene, phase change material, thermal conductivity, thermal properties

王亚，张东. 混杂三维网状石墨烯相变复合材料的制备与热性能分析[J]. 储能科学与技术, 2017, 6(4): 675-680.

WANG Ya, ZHANG Dong. Preparation and thermal properties of hybrid composites made of a phase change material and three-dimensional networked graphene[J]. Energy Storage Science and Technology, 2017, 6(4): 675-680.

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混杂三维网状石墨烯相变复合材料的制备与热性能分析

Preparation and thermal properties of hybrid composites made of a phase change material and three-dimensional networked graphene

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