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

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.