A novel gelling method for stabilization of phase change material Na2HPo4•12H2O with sodium alginate grafted sodium acrylate

被引：19

作者：

Lan, Xiao Zheng ^{[1
]}

Tan, Zhi-Cheng

Shi, Quan

Yang, Chang Guang

机构：

[1] Shandong Agr Univ, Coll Chem & Mat Sci, Tai An 271018, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

来源：

THERMOCHIMICA ACTA | 2007年 / 463卷 / 1-2期

关键词：

phase change material; disodium hydrogen phosphate dodecahydrates; phase separation; gelling method; sodium alginate;

D O I：

10.1016/j.tca.2007.04.008

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

To stabilize phase change material, disodium hydrogen phosphate dodecahydrates (Na2HPO4 center dot 12H2O), a novel gelling method by polymerizing sodium alginate grafted sodium acrylate in its molten salt was investigated. The optimum synthesis conditions to obtain product with stable heat storage performance were 2.8% (w/w) sodium acrylate, 0.3-0.4% (w/w) sodium alginate, 0.1-0.19% (w/w) NAP-methylenebisacrylamide and 0.06% (w/w) K2S2O8 and Na2SO3, at 50 degrees C. Na2HPO4 center dot 12H(2)O was dispersed in the as-synthesized gel network as tiny crystals less than 0.1 mm. Melting points were in the range 35.4 +/- 2 degrees C. Short-term thermal cycling proves the effectiveness of the novel gelling method for eliminating phase separation in the gelled salt. (C) 2007 Published by Elsevier B.V.

引用

页码：18 / 20

页数：3