Page 95 - 《精细化工》2021年第4期

第 38 卷第 4 期 精 细 化 工 Vol.38, No.4
202 1 年 4 月 FINE CHEMICALS Apr. 2021

功能材料
PEG/APS-SiO /O-CNTs 导热增强
2

相变材料的制备及性能

1*
2
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1
鄢冬茂 1,2 ，蔡文蓉 ，殷国强 ，唐炳涛 ，张淑芬
（1. 大连理工大学 精细化工国家重点实验室，辽宁 大连 116024；2. 沈阳化工研究院有限公司，辽宁
沈阳 110021）
摘要：以聚乙二醇（PEG）为相变材料，以 3-氨丙基三乙氧基硅烷（APS）改性的二氧化硅（SiO 2 ）为支撑材
料，以氧化碳纳米管（O-CNTs）为导热增强材料，采用溶胶-凝胶法成功制备了 PEG/APS-SiO 2 /O-CNTs 导热增
强型复合相变材料。通过 FTIR、XRD、SEM、DSC 等对材料的结构和热性能进行了表征。当 PEG 质量分数为
82.0%时，复合相变材料仍然具有良好的定形效果，熔化焓和结晶焓分别达到–134.2 和 126.6 J/g，而且该材料具
有很好的储热稳定性，300次热循环后，其熔化焓值仅变化3.3%。相比于纯PEG，添加了质量分数为0.60% O-CNTs
的复合相变材料的导热增强率为 28.1%，导热系数达到 0.41 W/(m·K)。红外热成像结果表明，O-CNTs 能够有效
提高复合相变材料的储能和能量释放效率。
关键词：相变材料；氧化碳纳米管；聚乙二醇；导热；功能材料
中图分类号：TB34 文献标识码：A 文章编号：1003-5214 (2021) 04-0729-07

Preparation and properties of PEG/APS-SiO 2/O-CNTs phase

change materials with enhanced thermal conductivity

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1
1,2
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YAN Dongmao , CAI Wenrong , YIN Guoqiang , TANG Bingtao , ZHANG Shufen
（1. State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, Liaoning, China;
2. Shenyang Research Institute of Chemical Industry Co., Ltd., Shenyang 110021, Liaoning, China）
Abstract: PEG/APS-SiO 2/O-CNTs composite phase change materials with enhanced thermal conductivity
were synthesized by sol-gel method using polyethylene glycol (PEG) as phase change material,
3-aminopropyltriethoxysilane (APS) grafted silicon dioxide (SiO 2) as supporting material and oxide carbon
nanotube (O-CNTs) as thermal conductivity reinforcer. The structure and morphology of PEG/APS-SiO 2/O-
CNTs composite materials were characterized by FTIR, XRD, SEM and DSC. When the PEG mass fraction
was 82.0%, the composite phase change material still had good figuration performance, and the enthalpy of
melting and crystallization reached –134.2 and 126.6 J/g, respectively. More importantly, the composite
material retained good thermal properties after 300 melting and cooling cycles, the enthalpy decreased by
only 3.3%. Compared with that of pure PEG, the thermal conductivity enhancement rate of the composite
material with 0.60% (mass fraction) O-CNTs was 28.1%, the thermal conductivity coefficient was up to
0.41 W/(m·K). Infrared thermal imaging results indicated that O-CNTs could effectively improve the energy
storage and energy release efficiency of the composite phase change materials.
Key words: phase change materials; oxide carbon nanotubes; polyethylene glycol; thermal conductivity;
functional materials

收稿日期：2020-09-18; 定用日期：2020-09-23; DOI: 10.13550/j.jxhg.20200877
基金项目：国家自然科学基金（重点）项目（21536002）；国家自然科学基金创新研究群体科学基金（21421005）
作者简介：鄢冬茂（1984—），男，博士生，E-mail：yandongmao@sinochem.com。联系人：张淑芬（1960—），女，教授，E-mail：
zhangshf@dlut.edu.cn。