十八烷/二氧化硅相变微胶囊的制备与表征  

Preparation and Characterization of n-Octadecane/Silicon Dioxide Microencapsulated Phase Change Materials

作　　者：徐晓飞 汪旗 严雪峰 徐一剡 管清宝 游正伟 Xu Xiaofei;Wang Qi;Yan Xuefeng;Xu Yiyan;Guan Qingbao;You Zhengwei(College of Materials Science and Engineering,Donghua University,Shanghai 201600,China;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201600,China;Zhejiang Hexin New Material Co.,Ltd.,Jiaxing 314000,China)

机构地区：[1]东华大学材料科学与工程学院,上海201600 [2]东华大学纤维材料改性国家重点实验室,上海201600 [3]浙江禾欣新材料有限公司,浙江嘉兴314000

出　　处：《山东化工》2024年第5期1-3,9,共4页Shandong Chemical Industry

基　　金：中国博士后科学基金面上项目(2021M702898)。

摘　　要：以十八烷(n-OD)为芯材、二氧化硅(SiO_(2))为壁材,采用溶胶-凝胶法制备二氧化硅相变微胶囊(SiO_(2)MEPCMs)。通过各种反应参数的调控,获得最佳的SiO_(2)MEPCMs,最佳反应参数为硅酸四乙酯加入量10 mL、V水∶V乙醇为2∶1、乳化速度12000 r/min,搅拌速度300 r/min,并且发现氨水(NH_(3)·H_(2)O)的滴加速率会明显改变SiO_(2)MEPCM的形貌。In this paper,silicon dioxide MEPCMs(SiO_(2)MEPCMs)was prepared by sol-gel method with n-octadecane(n-OD)as core material and silicon dioxide(SiO_(2))as wall material.The optimal SiO_(2)MEPCMs was obtained by adjusting various reaction parameters.The optimal reaction parameters were as follows:the dosage of tetraethyl silicate was 10 mL,the volume ratio of water to ethanol was 2∶1,the emulsifying speed was 12000 r/min,and the stirring speed was 300 r/min.Moreover,we found that the droplet acceleration rate of NH_(3)·H_(2)O significantly changed the morphology of SiO_(2)MEPCMs.

关 键 词：相变储能材料 相变微胶囊 十八烷 二氧化硅 

分 类 号：TB34[一般工业技术—材料科学与工程]