Nanoencapsulated phase change materials with polymer-SiO2 hybrid shell materials: Compositions, morphologies, and properties
Nanoencapsulated phase change materials with polymer-SiO2 hybrid shell materials: Compositions, morphologies, and properties
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具有聚合物-SiO2杂化壳材料的纳米封装相变材料：成分、形态和性能
DOI：
10.1016/j.enconman.2018.02.075
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发表时间：
2018-05
影响因子：
10.4
通讯作者：
Zhang Lin
中科院分区：
文献类型：
--
作者：
Zhu Yalin;Qin Yaosong;Wei Chengsha;Liang Shuen;Luo Xuan;Wang Jianhua;Zhang Lin
有机-无机杂化材料有望用于相变材料（PCM）的封装，以实现优异的胶囊性能。在这项工作中，通过依次进行烷氧基硅烷的界面水解-缩聚和乙烯基单体的自由基聚合，一锅法制备了新型聚合物-SiO2混合壳纳米胶囊PCM（NanoPCM）。采用SEM、TEM、FT-IR和XRD等方法对纳米相变材料的形貌、化学组成和晶体结构进行了表征。采用差示扫描量热法（DSC）、加速热循环试验和热流法分别测试了其储热性能、热可靠性和导热系数。通过渗透试验和纳米压痕试验分别评价了复合材料的抗渗性能和力学性能。与SiO2壳纳米相变材料相比，聚苯乙烯（PS）-SiO2壳纳米相变材料具有更小的尺寸和更好的球形，而聚甲基丙烯酸羟乙酯（PHEMA）-SiO2壳纳米相变材料具有更大的尺寸和更好的球形。聚合物的种类对纳米相变材料的过冷行为有很大的影响。聚合物-SiO2杂化壳层材料赋予NanoPCM更高的热可靠性、导热性和防漏性能。更重要的是，屈服压缩载荷从SiO2壳的14.7 μN显著增加到PS-SiO2壳的>34.6 μN和PHEMA-SiO2壳的65 μN。
Organic-inorganic hybrid materials are promising for encapsulation of phase change materials (PCMs) to achieve exceptional capsule properties. In this work, novel polymer-SiO2hybrid shelled nanoencapsulated PCMs (NanoPCMs) were fabricated in one-pot, through sequentially executed interfacial hydrolysis-polycondensation of alkoxy silanes and radical polymerization of vinyl monomers. The morphologies, chemical compositions, and crystal structures of the NanoPCMs were characterized by SEM, TEM, FT-IR, and XRD methods. The thermal energy storage capability, thermal reliability, and thermal conductivity were tested by DSC, accelerated thermal cycling test, and heat flux method, respectively. The leakage proof property and mechanical property were evaluated by seepage test and nanoindentation test, respectively. Compared with NanoPCMs with SiO2shell, the NanoPCMs with polystyrene (PS)-SiO2shell possess smaller size and bowl like shape, while NanoPCMs with poly(hydroxylethyl methacrylate) (PHEMA)-SiO2shell possess larger size and perfect spherical shape. The polymer types have great impact on the supercooling behavior of the NanoPCMs. The polymer-SiO2hybrid shell materials endow the NanoPCMs with improved thermal reliability, thermal conductivity, and leakage proof property. More importantly, the compressive load at yield increases remarkably from 14.7 μN for nanocapsules with SiO2shell, to >34.6 μN for that with PS-SiO2shell, and 65 μN for that with PHEMA-SiO2shell.
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影响因子：
--
作者：
Kunjie Yuan;Jian Liu;X. Fang;Zhengguo Zhang
通讯作者：
Kunjie Yuan;Jian Liu;X. Fang;Zhengguo Zhang
含丙烯酸基共聚物微胶囊相变材料（MicroPCM）的温控纤维的组成和表征
DOI：
10.1021/ie404174a
发表时间：
2014-03
期刊：
Industrial & Engineering Chemistry Research
影响因子：
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作者：
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通讯作者：
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影响因子：
6.4
作者：
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通讯作者：
Nathan S. Roberts;R. Al-Shannaq;J. Kurdi;S. Al‐Muhtaseb;M. Farid
影响因子：
10.4
作者：
Xu Wang;Hang Yu;Lu Li;Mei Zhao
通讯作者：
Xu Wang;Hang Yu;Lu Li;Mei Zhao
影响因子：
6.7
作者：
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通讯作者：
Yanyang Yang;X. Ye;Jie Luo;G. Song;Liu Yuan;G. Tang