中文摘要：

以癸酸（CA）、肉豆蔻酸（MA）、硬脂酸（SA）三元低共熔物为相变材料,有机改性蒙脱土（OMMT）为层状封装材料,采用熔融浸渗法制备CA-MA-SA/OMMT复合相变材料,相变材料和层状材料的最佳质量比m（CAMA-SA）∶m（OMMT）=7∶3。采用X射线衍射（XRD）、红外光谱（FT-IR）和差示扫描量热分析（DSC）对复合相变材料的结构、性能进行表征。结果表明：三元脂肪酸低共熔物被有效封装在改性后的蒙脱土层间,复合相变材料的相变温度为20.14℃,相变潜热为89.14J·g-1。相变动力学分析结果,复合相变材料的相变反应级数为1.18,活化能为14.22kJ·mol-1。活化能说明低共熔物与蒙脱土之间是嵌合关系,不是化学吸附。

英文摘要：

A novel composite phase change material（PCM）for thermal energy storage was produced by melt melt infiltration method,with a eutectic mixture of capric acid（CA）,myristic acid（MA）and stearic acid（SA）as PCM and organic modified montmorillonite（OMMT）as a packaging carrier.The best quality ratio of phase change material and laminated material of m（CA-MA-SA）∶m（OMMT）=7 ∶3.The structure,thermal properties of the composite PCM were characterized by X-ray diffraction （XRD）,Fourier transformation infrared （FT-IR）and Differential scan-ning calorimetry （DSC）analysis.The results showed that the eutectic mixture was successfully packaged in the inter-layer of OMMT.The melting point and latent heat of the composite PCM is 20.14 ℃ and 89.14 J·g-1 ,respectively. The result of phase transformation kinetic indicated that the reaction order is 1.18 and the activation energy is 14.22 kJ·mol-1 .The activation energy values show that eutectic mixture and OMMT is chimeric relationship,not chemical adsorption.