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
徐晓飞 1汪旗 2严雪峰 2徐一剡 2管清宝 1游正伟1
作者信息
- 1. 东华大学材料科学与工程学院,上海 201600;东华大学纤维材料改性国家重点实验室,上海 201600
- 2. 浙江禾欣新材料有限公司,浙江嘉兴 314000
- 折叠
摘要
以十八烷(n-OD)为芯材、二氧化硅(SiO2)为壁材,采用溶胶-凝胶法制备二氧化硅相变微胶囊(SiO2MEPCMs).通过各种反应参数的调控,获得最佳的SiO2 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 12 000 r/min,搅拌速度300 r/min,并且发现氨水(NH3·H2O)的滴加速率会明显改变SiO2 MEPCM的形貌.
Abstract
In this paper,silicon dioxide MEPCMs(SiO2 MEPCMs)was prepared by sol-gel method with n-octadecane(n-OD)as core material and silicon dioxide(SiO2)as wall material.The optimal SiO2 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 12 000 r/min,and the stirring speed was 300 r/min.Moreover,we found that the droplet acceleration rate of NH3·H2O significantly changed the morphology of SiO2 MEPCMs.
关键词
相变储能材料/相变微胶囊/十八烷/二氧化硅Key words
phase change materials/microencapsulated phase change materials/n-octadecane/silicon dioxide引用本文复制引用
基金项目
中国博士后科学基金面上项目(2021M702898)
出版年
2024
NETL
NSTL
万方数据