癸醇-棕榈酸/膨胀石墨低温复合相变材料的制备与性能

周孙希; 章学来; 刘升; 陈启杨; 徐笑锋; 王迎辉

doi:10.11949/j.issn.0438-1157.20180646

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癸醇-棕榈酸/膨胀石墨低温复合相变材料的制备与性能

材料化学工程与纳米技术 | 更新时间：2020-06-24

- 癸醇-棕榈酸/膨胀石墨低温复合相变材料的制备与性能
- Preparation and properties of decyl alcohol-palmitic acid/expanded graphite low temperature composite phase change material
- 化工学报 2019年70卷第1期页码：290-297
- 作者机构：
  
  1.上海海事大学蓄冷技术研究所，上海 201306
  2.北京市农林科学院蔬菜研究中心，北京 100097
- 作者简介：
  
  周孙希（1994—），男，硕士研究生，1373988947@qq.com
  章学来（1964—），男，博士，教授，xlzhang@shmtu.edu.cn
- 基金信息：
  
  国家重点研发课题(2018YFD0401305);国家自然科学基金项目(51376115);上海市科委项目(16040501600)
- DOI：10.11949/j.issn.0438-1157.20180646
  中图分类号： TK 02
- 收稿：2018-06-12，
  
  修回：2018-10-08，
  
  纸质出版：2019-01-05
- 稿件说明：
移动端阅览
周孙希, 章学来, 刘升, 陈启杨, 徐笑锋, 王迎辉. 癸醇-棕榈酸/膨胀石墨低温复合相变材料的制备与性能[J]. 化工学报, 2019, 70(1): 290-297

ZHOU Sunxi, ZHANG Xuelai, LIU Sheng, CHEN Qiyang, XU Xiaofeng, WANG Yinghui. Preparation and properties of decyl alcohol-palmitic acid/expanded graphite low temperature composite phase change material[J]. CIESC Journal, 2019, 70(1): 290-297
周孙希, 章学来, 刘升, 陈启杨, 徐笑锋, 王迎辉. 癸醇-棕榈酸/膨胀石墨低温复合相变材料的制备与性能[J]. 化工学报, 2019, 70(1): 290-297 DOI： 10.11949/j.issn.0438-1157.20180646.

ZHOU Sunxi, ZHANG Xuelai, LIU Sheng, CHEN Qiyang, XU Xiaofeng, WANG Yinghui. Preparation and properties of decyl alcohol-palmitic acid/expanded graphite low temperature composite phase change material[J]. CIESC Journal, 2019, 70(1): 290-297 DOI： 10.11949/j.issn.0438-1157.20180646.

摘要

为了寻求温度段在2~3℃的低温相变材料，采用低共熔法，以理论计算为基础制备了癸醇-棕榈酸（DA-PA）二元复合相变材料。为提高其热导率，利用膨胀石墨（EG）的多孔特性，制备了最佳质量比为15∶1的DA-PA/EG复合相变材料。通过DSC、步冷曲线、红外光谱测试、SEM、Hot Disk热常数分析、高低温循环实验对复合相变材料的结构和性能进行了研究。实验结果表明，当DA-PA质量比为97.8∶2.2时的低共熔温度为2.9℃，相变潜热为203.6 J·g

-1

。真空吸附后DA-PA被均匀地包裹在EG的多孔网状结构中，DA-PA/EG的相变温度为2.7℃，相变潜热为193.9 J·g

-1

，热导率为1.416 W·（m·K）

-1

，相比DA-PA提高了4.3倍。经过100次高低温循环后，DA-PA/EG仍保持良好的稳定性，在冷链物流中有较大的应用价值。

Abstract

To find a low temperature phase change material with a temperature range of 2—3℃

a sterol-palmitic acid (DA-PA) binary composite phase change material was prepared by eutectic method based on theoretical calculation. To improve the thermal conductivity

the DA-PA/EG composite phase change material with the optimal mass ratio of 15:1 was obtained by using the porous characteristics of expanded graphite (EG). The structure and properties of the composite phase change material were studied by DSC

step cooling curve

FI-TR

SEM and high-low temperature cycle test. The results show that when the mass ratio of DA-PA was 97.8:2.2

the phase change temperature was 2.9℃ and the latent heat was 203.6 J·g

-1

. After vacuum adsorption

DA-PA was uniformly encapsulated in the porous network structure of EG. The phase change temperature of DA-PA/EG was 2.7℃

the latent heat was 193.9 J·g

-1

and the thermal conductivity was 1.416W·(m·K)

-1

which was 4.3 times higher than DA-PA. After 100 times of high-low temperature cycles

the thermal properties of DA-PA/EG did not change much and still maintained good stability. The results show that the DA-PA/EG composite phase change material has great application value in the cold chain logistics.

关键词

Keywords

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