氧化石墨烯复合相变材料的制备及光热性能  

Preparation and Photothermal Performance of Graphene Oxide Composite Phase Change Materials

作　　者：王嘉伟 吴子华[1,2] 王元元 谢华清[1,2] 王婷婷 郭晓雪[1] WANG Jiawei;WU Zihua;WANG Yuanyuan;XIE Huaqing;WANG Tingting;GUO Xiaoxue(School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China;Shanghai Engineering Research Center of Advanced Thermal Functional Materials,Shanghai Polytechnic University,Shanghai 201209,China)

机构地区：[1]上海第二工业大学能源与材料学院,上海201209 [2]上海市先进热功能材料工程研究中心,上海201209

出　　处：《工程热物理学报》2023年第7期1891-1896,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.51876111);上海自然科学基金资助项目(No.21ZR1424500,No.21010500700);上海市曙光计划(No.18SG54)

摘　　要：本研究采用原位聚合法以4,4’-亚甲基双异氰酸酯(MDI)和聚乙二醇(PEG)为原材料制备氧化石墨烯(GO)/聚氨酯复合相变材料,研究了不同GO含量对复合材料的光热转换性能的影响规律。结果表明,当加入质量分数为1.72%的GO时,热导率最高可以达到1.02 W/(m·K),较未添加GO时热导率提高了97.7%。随着GO含量的增加,虽然相变焓值有一定程度的下降,但整体光热转换效率呈逐渐上升趋势(66.9%~80.3%)。In this study,in-situ polymerization was used to prepare graphene oxide(GO)/polyurethane composite phase change materials with 4,4'-methylene disocyanate(MDI)and polyethylene glycol(PEG)as raw materials,and different GO contents were studied.The law of influence on the light-to-heat conversion performance of composite materials.The results show that when the content of GO is 1.72%,the thermal conductivity can reach up to 1.02 W/(m·K),which is 97.7% higher than when no GO is added.With the increase of GO content,although the phase change enthalpy value has decreased to a certain extent,the overall light-to-heat conversion efficiency is gradually increasing(66.9%~80.3%).

关 键 词：氧化石墨烯 光热转换 聚氨酯 热导率 

分 类 号：TB324[一般工业技术—材料科学与工程] TB34