以十水硫酸钠为主体的相变材料体系防分层剂研究

Study of an Anti-Layered Agent on Phase Change Material of Na₂SO₄•10H₂O

摘要: 十水硫酸钠作为相变材料应用前景广阔，但是存在严重的分层现象，影响其使用效果。本文采用均匀设计软件进行了十水硫酸钠防分层剂研究，选取了五种不同的增稠剂来防止体系分层，考察了各个物质不同加入量对十水硫酸钠分层现象的影响，得到防分层剂的最佳配方。最佳配方(质量分数)为羧甲基纤维素(0.213%)，聚丙烯酰胺(0.243%)，白炭黑(0.968%)，丙烯酸吸水树脂(0.738%)，黏土(0.567)。当体系中加入此防分层剂(3%)后，十水硫酸钠相变体系无分层现象且稳定性良好。

Abstract: As phase change material, Na₂SO₄•10H₂O has wide application, but the serious stratification influ-ences its effects. Uniform design software was used to prepare the anti-layered agent of phase change material on Na₂SO₄•10H₂O to get the best formula. It could be gained from the experiment that the optimum formula was: CMC (0.213%), polyacrylamide (0.243%), silica (0.968%), acrylic water-absorbent resin (0.738%), clay (0.567%). When the anti-layered agent was added, it was stability and there was no stratification.