| SiO_2/十八烷酸相变微胶囊的制备与表征 |
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| 引用本文： | 蹇守卫,马保国,金磊,穆松,张琴.SiO_2/十八烷酸相变微胶囊的制备与表征[J].功能材料,2008,39(12). |
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| 作者姓名： | 蹇守卫 马保国 金磊 穆松 张琴 |
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| 作者单位： | 武汉理工大学硅酸盐材料工程教育部重点实验室; |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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| 摘 要： | 以水玻璃和十八烷酸为基本原料,利用两者反应生成表面活性剂十八烷酸钠来促进十八烷酸在水中的分散与形成胶束,并使由水玻璃提供的硅氧四面体SiO4]完成对胶束的包裹,然后再通过调整pH值,使十八烷酸钠还原为具有相变性能的十八烷酸,通过上述方法制得的以SiO4]结构为囊壁、十八烷酸为囊芯的相变微胶囊.SEM、DSC、XRD、FTIR等对其表面形貌、热性能、囊壁和囊芯结构的表征结果表明,其粒度均匀,为在0.40～0.6靘,表面光滑,相变焓为78.2J/g.该方法较好的解决了相变微胶囊制备过程相变材料的分散问题,既使辅助材料的品种简化,又提高了微胶囊中相变材料的有效含量.
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| 关 键 词： | 相变储能 微胶囊 制备 表征 |
Preparation and characterization of SiO_2/stearic acid microencapsulated phase change materials |
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| JIAN Shou-wei,MA Bao-guo,JIN Lei,MU Song,ZHANG Qin.Preparation and characterization of SiO_2/stearic acid microencapsulated phase change materials[J].Journal of Functional Materials,2008,39(12). |
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| Authors: | JIAN Shou-wei MA Bao-guo JIN Lei MU Song ZHANG Qin |
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| Affiliation: | JIAN Shou-wei,MA Bao-guo,JIN Lei,MU Song,ZHANG Qin (Key Lab.for Silicate Materials Science , Engineering of Ministry of Education,WHUT,Wuhan 430070,China) |
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| Abstract: | The preparation of a new kind of SiO2/ stearic acid microencapsulated phase change materials(microPCMs) which used sodium silicate and stearic acid as the basic raw materials was described in this paper.The progress of microPCMs which to the wall for stearic acid batteries can be divided into two steps.The first stearic dispersed method is through the reaction of surfactant between the water glass with stearic acid,the formation of MicroPCMs will be reached after the completion of pH value by adjusting the ... |
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| Keywords: | phase change energy storage microencapsulate preparation characterization |
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