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投稿时间:2018-04-13
投稿时间:2018-04-13
中文摘要: 采用原位聚合法制备了以石蜡为芯材、三聚氰胺-甲醛-尿素树脂为壁材、复合纳米铝(Al)及羧基化碳纳米管(C-CNT)的相变微胶囊(MPCM)。测试分析了无添加剂、只复合单一物质以及同时复合Al和C-CNT的MPCM的外观、粒径、导热系数、过冷度以及悬浮液物理稳定性。结果表明:制备的MPCM成型良好;添加剂提高了微胶囊的导热系数,降低了过冷度,与Al相比,C-CNT的改善效果较为明显;添加质量分数为2% C-CNT和4.5% Al调节微胶囊密度接近基液密度,实现了悬浮液48 h不分层。
Abstract:The microencapsulated phase change materials (MPCM) are synthesized by polymerization using paraffin as core and urea-melamine-formaldehyde polymer as shell and composite nano aluminum(Al) and carboxylic carbon nano tube (C-CNT).The morphology,diameter distributions,thermal conductivities,degrees of supercooling and stability of the MPCMs (without additives,with nano aluminum,with nano aluminum and C-CNT) are measured.The modified MPCMs all show spherical shape,and the additives improve the thermal conductivity of microcapsules and reduce the supercooling degree.Adding 2%C-CNT and 4.5%Al to adjust the density of microcapsules is close to the base liquid density,and the suspension remains stable for 48 h.
keywords: microencapsulated phase change supercooling thermal conductivity coefficient physical stability
文章编号:20184006 中图分类号: 文献标志码:
基金项目:欧盟委员会第七框架协议玛丽居里国际人才引进项目(FP7-PEOPLE-2011-ⅡF-298093);上海市自然科学基金(17ZR1411300);上海市科学委员会重点科技攻关项目(17DZ1201500)。
作者 | 单位 | |
王志楚 | 东南大学, 江苏 南京 210096 | |
周宇飞 | 上海电力学院, 上海 200090 | 190172104@qq.com |
乐平 | 上海虹桥商务区能源服务有限公司, 上海 201107 | |
姜未汀 | 上海电力学院, 上海 200090 | |
姚远 | 上海电力学院, 上海 200090 | |
张涛 | 上海电力学院, 上海 200090 | |
仇中柱 | 上海电力学院, 上海 200090 |
引用文本:
王志楚,周宇飞,乐平,等.复合纳米铝和羧基化碳纳米管相变微胶囊的制备及特性[J].上海电力大学学报,2018,34(4):333-338.
WANG Zhichu,ZHOU Yufei,LE Ping,et al.Fabrication and Characteristics of Composite Nano Aluminum and Carboxylic Carbon Nano Tube Microencapsulated Phase Change Materials[J].Journal of Shanghai University of Electric Power,2018,34(4):333-338.
王志楚,周宇飞,乐平,等.复合纳米铝和羧基化碳纳米管相变微胶囊的制备及特性[J].上海电力大学学报,2018,34(4):333-338.
WANG Zhichu,ZHOU Yufei,LE Ping,et al.Fabrication and Characteristics of Composite Nano Aluminum and Carboxylic Carbon Nano Tube Microencapsulated Phase Change Materials[J].Journal of Shanghai University of Electric Power,2018,34(4):333-338.