以十六醇(H)-十六酸(PA)-十二酸(LA)为相变材料,SiO2为载体材料,采用溶胶-凝胶法制备不同H-PA-LA用量的H-PA-LA/SiO2三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/SiO2三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/SiO2三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H-PA-LA用量为0.06 mol时,所制备的H-PA-LA/SiO2三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0.07～0.10 g/g,相变温度为26.29℃,相变焓为70.55 J/g.
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