十二水磷酸氢二钠纳米复合相变材料的过冷特性

doi:10.16085/j.issn.1000-6613.2017-1691

化工进展 ›› 2018, Vol. 37 ›› Issue (07): 2734-2739.DOI: 10.16085/j.issn.1000-6613.2017-1691

十二水磷酸氢二钠纳米复合相变材料的过冷特性

陈跃¹, 纪珺¹, 徐笑锋¹, 章学来¹, 李玉洋¹, 陈启杨¹, 刘升²

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

收稿日期:2017-08-10 修回日期:2017-09-10 出版日期:2018-07-05 发布日期:2018-07-05
通讯作者: 章学来,教授,研究方向为相变储能技术及二元冰真空制备。
作者简介:陈跃(1993-),男,硕士研究生,研究方向为储能技术。
基金资助:
上海市科委项目（16040501600）。

Supercooling characteristics of disodium hydrogen phosphate nano-composites phase change materials

CHEN Yue¹, JI Jun¹, XU Xiaofeng¹, ZHANG Xuelai¹, LI Yuyang¹, CHEN Qiyang¹, LIU Sheng²

1 Institute of Cool Storage Technology, Shanghai Maritime University, Shanghai 201306, China;
2 Beijing Vegetable Research Center Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China

Received:2017-08-10 Revised:2017-09-10 Online:2018-07-05 Published:2018-07-05

摘要/Abstract

摘要： 研制了一种以十二水磷酸氢二钠（Na₂HPO₄·12H₂O）为主储能材料的中低温相变材料。通过添加成核剂纳米Al₂O₃、纳米TiO₂、纳米石墨粉、多壁碳纳米管和高分子分散剂聚丙烯酸钠（PAAS）对Na₂HPO₄·12H₂O改性。结果表明，多壁碳纳米管减少过冷度的同时会破坏Na₂HPO₄·12H₂O的相变特性，添加3%（质量分数）的纳米Al₂O₃可以减少40.7%的过冷度，添加4%的纳米TiO₂可以减少44.6%的过冷度，添加4%的纳米石墨粉可以减少62.3%的过冷度。对于添加3%纳米Al₂O₃的复合相变材料，PAAS浓度对过冷度无影响；对于4%纳米TiO₂的复合相变材料，添加4% PAAS过冷度最低为3.2℃，减少了76.1%；对于4%纳米石墨粉的复合相变材料，2% PAAS过冷度最低为1.2℃，减少了90.7%；纳米石墨粉/PAAS/Na₂HPO₄·12H₂O三元复合相变材料经过100次循环实验后，发现具有较好的热稳定性。

关键词: 复合材料, 相变, 纳米粒子, 过冷, 稳定性

Abstract: A low temperature phase change material with the disodium hydrogen phosphate (Na₂HPO₄·12H₂O) as the main energy storage material was developed. The property of the Na₂HPO₄·12H₂O was modified by adding nucleators, such as nano Al₂O₃, nano TiO₂, nano-graphite powder, multi-walled carbon nanotubes (MWCNTs), and the polymer dispersant polyacrylic acid sodium(PAAS). The results showed that the adding of MWCNTs would reduce the super-cooling degree of the Na₂HPO₄·12H₂O while destroy its phase change characteristics. The super-cooling degree decreased by 40.7% after adding 3% (mass fraction) nano Al₂O₃, 44.6% by adding 4% nano TiO₂, and decreased by 62.3% after adding 4% nano-graphite powder. Compared with 3% (mass fraction) nano Al₂O₃ composite phase change material, the concentration of PAAS had no effect on the supercooling degree. Comepared with 4% nano TiO₂ composite phase change material, the minimum supercooling degree was 3.2℃, which decreased by 76.1% by adding 4% PAAS. Comepared with 4% nano-graphite powder composite phase change material, the minimum supercooling degree was 1.2℃, which decreased by 90.7% by adding 2% PAAS. It was found that the three elements composite phase change material had good thermal reliability by the cyclic experiments.

Key words: composites, phase change, nanoparticles, supercooling, stability

中图分类号:

TK02

陈跃, 纪珺, 徐笑锋, 章学来, 李玉洋, 陈启杨, 刘升. 十二水磷酸氢二钠纳米复合相变材料的过冷特性[J]. 化工进展, 2018, 37(07): 2734-2739.

CHEN Yue, JI Jun, XU Xiaofeng, ZHANG Xuelai, LI Yuyang, CHEN Qiyang, LIU Sheng. Supercooling characteristics of disodium hydrogen phosphate nano-composites phase change materials[J]. Chemical Industry and Engineering Progress, 2018, 37(07): 2734-2739.

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十二水磷酸氢二钠纳米复合相变材料的过冷特性

Supercooling characteristics of disodium hydrogen phosphate nano-composites phase change materials

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