硬脂酸/聚氨酯丙烯酸酯相变复合材料的快速制备及性能研究  

Fast Preparation and Properties of Stearic Acid/Polyurethane Acrylate Composite Phase Change Materials

作　　者：张琦[1,2] 刘洋 伍潇[1,2] 孙锐 李迎军 李永升 杨文彬[1,2] 周元林 ZHANG Qi;LIU Yang;WU Xiao;SUN Rui;LI Ying-jun;LI Yong-sheng;YANG Wen-bin;ZHOU Yuan-lin(School of Materials and Chemistry,Southwest University of Science and Technology,Mianyang 621010,China;State Key Laboratory of Environmental-friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010,China)

机构地区：[1]西南科技大学材料与化学学院,绵阳621010 [2]西南科技大学环境友好能源材料国家重点实验室,绵阳621010

出　　处：《武汉理工大学学报》2023年第4期9-15,共7页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(U1730114);西南科技大学博士基金(20zx7105,19zx7133);环境友好能源材料国家重点实验室项目(21kfhg15,21fksy26).

摘　　要：采用硬脂酸为相变材料,聚氨酯丙烯酸酯作为柔性基体,通过紫外光固化法快速制备了一种柔性、形状稳定的新型相变复合材料。通过SEM、FT-IR、DSC、万能试验机和渗漏实验对相变复合材料的结构与性能进行了测试,实验结果表明:当硬脂酸的质量分数为50%时,相变温度为63.4℃,相变焓为100.99J/g;其表现出优异的力学性能,抗拉伸强度为2.13MPa,断裂伸长率可达1541.2%;相变复合材料在渗漏实验中没有明显的液体泄露,质量损失很小,定形效果和热稳定性良好。A new composite phase change material with flexibility and shape stability was rapidly prepared by UV curing method.We used polyurethane acrylate as a flexible polymer matrix and stearic acid as an energy storage material.The structure and properties of the composite phase change material were tested by SEM,FT-IR,DSC,universal testing machine and leakage experiments.The experimental results show that:the mass fraction of stearic acid is 50%,the phase change temperature is 63.4℃,and the enthalpy of phase change is 100.99J/g;it shows excellent mechanical properties,with tensile strength of 2.13MPa and elongation at break up to 1541.2%.The composite phase change material has no obvious leakage of liquid phase in the leakage experiment,very little mass loss,good shape-stabilized and thermal stability.

关 键 词：硬脂酸 聚氨酯丙烯酸酯 紫外光固化 相变材料 形状稳定性 

分 类 号：TB34[一般工业技术—材料科学与工程]