Effect Of Compound Emulsifier On Properties And Mechanism Of Phase Change And Humidity Controlling Composites

Sipan-80, Tween-80 and sodium lauryl sulfate were used to synthesize the compound emulsifier with different formulations, and SiO2 as the carrier, hexadecanol-palmitic acid-lauric acid as a phase change material, a series of phase change and humidity controlling composites were made by sol-gel method. Effects of different compound emulsifier formulations on particle size distribution, microstructure, composition structure, thermal properties and humidity properties were studied by LPSA, SEM, FTIR, DSC and DVS, the influence mechanism of compound emulsifier on thermal properties and humidity properties of phase change and humidity controlling composites was analyzed. The results show that with Sipan-80, Tween-80 and sodium lauryl sulfate as compound emulsifier, phase change and humidity controlling composites with good thermal properties and humidity properties were prepared, such as phase change material with mass fraction of 70. 34% to 74. 00 , and the moisture content with relative humidity between 40% and 60% is 0. 0361-0. 0390g/g. With Sipan-80, Tween-80 and sodium lauryl sulfate as compound emulsifier can effectively improve the particle size distribution and uniformity coefficient of phase change and humidity controlling composites, and improve the dispersion of phase change and humidity controlling composites.