化工进展2018，Vol.37Issue(7)：2734-2739,6.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
Supercooling characteristics of disodium hydrogen phosphate nano-composites phase change materials
摘要
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.关键词
复合材料/相变/纳米粒子/过冷/稳定性Key words
composites/phase change/nanoparticles/supercooling/stability分类
能源科技引用本文复制引用
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(7):2734-2739,6.基金项目
上海市科委项目(16040501600). （16040501600）
