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首页 > 过刊浏览>2018年第40卷第4期 >13-19. DOI:10.11835/j.issn.1674-4764.2018.04.003
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复合相变调湿材料的制备与热湿性能
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TU111.4

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科技部重点专项（2016YFC0700500）；国家自然科学基金（51578278）


Preparation and heat-moisture properties of phase change hygroscopic materials
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    摘要:

    制备一种兼具调热调湿功能的新型复合相变调湿材料（CMPCM），该材料由相变微胶囊（MPCM）与多孔调湿材料合成。作为被动式节能材料，能够有效平抑室内温湿度波动和降低建筑能耗。其中，相变微胶囊由癸酸和十八烷酸的混合物为芯材、二氧化硅为壁材通过溶胶凝胶法合成，多孔调湿材料为硅藻土。通过扫描电子显微镜（SEM）、差示扫描量热法（DSC）、热重分析法（TGA），正杯蒸发法和等温吸放湿法分析表征了复合相变调湿材料的组成结构、热性能、热稳定性以及传湿系数和湿缓冲值。DSC和TGA结果显示，复合相变调湿材料比普通相变材料有更小的过冷度和更好的热稳定性。传湿特性实验显示，该新材料比单纯的多孔调湿材料有更大的传湿系数和湿缓冲值。

    Abstract:

    A new composite phase change humidity material (CMPCM) was prepared, which has the functions of temperature regulation and humidity controlling. It was synthesized by composite microencapsulated phase change material (MPCM) and porous humidity control material. CMPCM can effectively stabilize the indoor temperature as well as humidity fluctuations, and reduce building energy consumption as a passive energy-saving material. The MPCM was synthesized by sol-gel method with a mixture of capric acid and octadecanoic acid (PCM) as core, and SiO2 as shell. The diatomite was selected as porous hygroscopic material. The performance of composition and structure, thermal properties, thermal stability, moisture transfer coefficient and moisture buffer value were characterized by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA), positive cup evaporation method and isothermal sorption method respectively. DSC and TGA results showed that the super-cooling degree of CMPCM was lower than that of PCM, and the initial degradation temperature of CMPCM was higher than that of PCM. Moisture Transfer Characteristics Test showed that the moisture transfer coefficient and moisture buffer value of CMPCM were higher than that of classical materials.

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吴智敏,陈智,秦孟昊.复合相变调湿材料的制备与热湿性能[J].土木与环境工程学报（中英文）,2018,40(4):13-19. Wu Zhimin, Chen Zhi, Qin Menghao. Preparation and heat-moisture properties of phase change hygroscopic materials[J]. JOURNAL OF CIVIL AND ENVIRONMENTAL ENGINEERING,2018,40(4):13-19.10.11835/j. issn.1674-4764.2018.04.003

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  • 收稿日期:2017-12-19
  • 在线发布日期: 2018-07-05
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