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以十六醇(H)-十六酸(PA)-十二酸(LA)为相变材料,SiO_2为载体材料,采用溶胶-凝胶法制备不同HPA-LA用量的H-PA-LA/SiO_2三元相变体系复合材料。采用等温吸放湿法和步冷曲线法对H-PA-LA/SiO_2三元相变体系复合材料的湿性能和热性能进行测试,同时利用FTIR、XRD、SEM、LPSA和DSC对H-PA-LA/SiO_2三元相变体系复合材料的组成结构、晶体结构、微观形貌、粒径分布、相变温度和相变焓进行表征。结果表明:当HPA-LA用量为0.06mol时,所制备的H-PA-LA/SiO_2三元相变体系复合材料在人体舒适度范围内具有良好的热湿综合性能,即相对湿度为40%~65%时,平衡含湿量为0.07~0.10g/g,相变温度为26.29℃,相变焓为70.55J/g。
LA-H / PAA-LA / PAA blends were prepared by the sol-gel method using hexadecyl alcohol (H) -hexadecanoic acid (PA) -dodecanoic acid as the phase change material and SiO 2 as the carrier material. SiO 2 ternary phase transition system composites The wet and thermal properties of H-PA-LA / SiO 2 ternary phase transition system composites were tested by isothermal absorption and desorption wet-method and step-by-step cooling curve method. The properties of H-PA-LA / SiO 2 ternary phase transition system composites were tested by FTIR, XRD, SEM, -LA / SiO 2 ternary phase transition system composites were characterized by elemental structure, crystal structure, microstructure, particle size distribution, phase transition temperature and phase transition enthalpy. The results show that when the amount of HPA-LA is 0.06mol, the prepared H-PA-LA / SiO 2 ternary phase transition system composite has good heat and moisture comprehensive properties in the range of human comfort, that is, the relative humidity is 40% ~ 65%, the equilibrium moisture content is 0.07 ~ 0.10g / g, the phase transition temperature is 26.29 ℃ and the enthalpy of phase transition is 70.55J / g.