硬脂酸/改性碳纳米管复合相变储热材料性能

doi:10.12028/j.issn.2095-4239.2019.0036

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (4): 759-763.doi: 10.12028/j.issn.2095-4239.2019.0036

硬脂酸/改性碳纳米管复合相变储热材料性能

杨岳澔¹, 程晓敏^1,2, 李丹¹, 李元元¹

1 武汉理工大学材料科学与工程学院, 湖北武汉 430070;
2 黄冈师范学院机电与汽车工程学院, 湖北黄冈 438000

收稿日期:2019-03-14 修回日期:2019-04-16 出版日期:2019-07-01 发布日期:2019-04-16
通讯作者: 程晓敏,教授,从事相变储热研究,E-mail:chengxm@whut.edu.cn。
作者简介:杨岳澔(1995-),男,硕士研究生,E-mail:yyhsean@whut.edu.cn
基金资助:
湖北省科技支撑计划（2015BA111）。

Properties of stearic acid/modified carbon nanotube composite phase change materials

YANG Yuehao¹, CHENG Xiaomin^1,2, LI Dan¹, LI Yuanyuan¹

1 School of Materials Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;
2 School of Electromechanical and Automobile Engineering, Huanggang Normal University, Huanggang 438000, Hubei, China

Received:2019-03-14 Revised:2019-04-16 Online:2019-07-01 Published:2019-04-16

摘要/Abstract

摘要： 使用混酸氧化和球磨处理制备改性碳纳米管，并与硬脂酸复合制备相变储热材料。X射线衍射结果显示，球磨处理对碳纳米管的结构有一定影响，混酸氧化后的碳纳米管物相没有发生改变。红外光谱分析表明，球磨处理和混酸氧化对碳纳米管有纯化作用，酸化碳纳米管出现羟基、羰基等官能团，有助于碳纳米管的分散。扫描电镜照片显示，改性碳纳米管在硬脂酸中的分散性为酸化碳纳米管 > 球磨碳纳米管 > 碳纳米管，热导率测试结果也与此符合，说明碳纳米管分散性增加，对硬脂酸热导率有较大的提高。

关键词: 碳纳米管, 硬脂酸, 相变, 储热

Abstract: Modifed carbon nanotubes were prepared by through acid oxidation and ball milling before combined with stearic acid to prepare a composite phase change material. X-ray diffraction results showed that the ball milling treatment damaged the structure of the carbon nanotubes, whereas no changes occurred to the phase of the carbon nanotubes after oxidation with the mixed acid. Infrared spectroscopic analyses indicated that the ball milling treatment and mixed acid oxidation gave a purifying effect on the carbon nanotubes, and the acidifed carbon nanotubes exhibited functional groups such as hydroxyl groups and carbonyl groups, contributing to the dispersion of the carbon nanotubes. The scanning electron microscopic analyses suggested that the dispersibility of the modified carbon nanotubes in stearic acid was acidified carbon nanotubes > ball-milled carbon nanotubes > carbon nanotubes. The thermal conductivity results also agreed with this above order, indicating that the dispersion of carbon nanotubes increased the thermal conductivity of stearic acid.

Key words: carbon nanotubes, stearic acid, phase change, thermal storage

中图分类号:

TK02

杨岳澔, 程晓敏, 李丹, 李元元. 硬脂酸/改性碳纳米管复合相变储热材料性能[J]. 储能科学与技术, 2019, 8(4): 759-763.

YANG Yuehao, CHENG Xiaomin, LI Dan, LI Yuanyuan. Properties of stearic acid/modified carbon nanotube composite phase change materials[J]. Energy Storage Science and Technology, 2019, 8(4): 759-763.

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硬脂酸/改性碳纳米管复合相变储热材料性能

Properties of stearic acid/modified carbon nanotube composite phase change materials

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