掺月桂酸-硬脂酸/膨胀蛭石复合相变材料建筑砂浆的制备和性能表征

doi:10.12028/j.issn.2095-4239.2018.0126

储能科学与技术 ›› 2019, Vol. 8 ›› Issue (1): 92-97.doi: 10.12028/j.issn.2095-4239.2018.0126

掺月桂酸-硬脂酸/膨胀蛭石复合相变材料建筑砂浆的制备和性能表征

周卫兵¹, 韦钧¹, 李康¹, 朱教群^1,2, 程晓敏¹

1 武汉理工大学材料科学与工程学院, 湖北武汉 430070;
2 武汉理工大学硅酸盐建筑材料国家重点实验室, 湖北武汉 430070

收稿日期:2018-07-25 修回日期:2018-09-29 出版日期:2019-01-01 发布日期:2018-09-07
通讯作者: 周卫兵(1974-),男,博士,副教授,主要从事新能源材料及保温材料方面研究。E-mail:jsyczwb@whut.edu.cn。
作者简介:周卫兵(1974-),男,博士,副教授,主要从事新能源材料及保温材料方面研究。E-mail:jsyczwb@whut.edu.cn。
基金资助:
湖北省科技支撑计划项目（2015BAA107）。

Preparation and characterization of building mortar with lauric acid-stearic acid/expanded vermiculite composite phase change material

ZHOU Weibing¹, WEI Jun¹, LI Kang¹, ZHU Jiaoqun^1,2, CHENG Xiaomin¹

1 School of Material Science and Engineering, Wuhan University of Technology, Wuhan 430070, Hubei, China;
2 State Key Laboratory of Silicate Building Materials, Wuhan University of Technology, Wuhan 430070, Hubei, China

Received:2018-07-25 Revised:2018-09-29 Online:2019-01-01 Published:2018-09-07

摘要/Abstract

摘要： 以改性膨胀蛭石为吸附材料，以月桂酸和硬脂酸为相变材料，通过熔融共混法与真空吸附法制备定型复合相变材料，然后将其掺入砂浆中制备得到蓄热砂浆。结果表明：复合相变材料经过1000次循环后相变焓为167.6 kJ/kg，变化率仅为3.6%，热稳定性良好，无渗漏现象，掺入30%体积含量复合相变材料的砂浆28 d强度为9.2 MPa。掺有该定型相变材料的蓄热砂浆具有优异的热力学性能，完全可以应用于建筑物围护结构来调节室内温度。

关键词: 相变材料, 膨胀蛭石, 定型相变材料, 蓄热砂浆

Abstract: The modified expanded vermiculite is used as the adsorbent material, and the lauric acid and stearic acid are used as the phase change materials. The shaped composite phase change material is prepared by melt blending method and vacuum adsorption method, and then mixed into the mortar to prepare the heat storage mortar. The results show that the phase change enthalpy of the composite phase change material after 16 cycles is 167.6 kJ/kg, the change rate is only 3.6%, the thermal stability is good, no leakage phenomenon, and the 28 d strength of the mortar with 30vol% composite phase change material is incorporated. It is 9.2 MPa. The heat storage mortar mixed with the shaped phase change material has excellent thermodynamic properties and can be completely applied to the building envelope to adjust the indoor temperature.

Key words: phase change material, expanded vermiculite, shaped phase change material, thermal storage mortar

中图分类号:

TU55+1.2

周卫兵, 韦钧, 李康, 朱教群, 程晓敏. 掺月桂酸-硬脂酸/膨胀蛭石复合相变材料建筑砂浆的制备和性能表征[J]. 储能科学与技术, 2019, 8(1): 92-97.

ZHOU Weibing, WEI Jun, LI Kang, ZHU Jiaoqun, CHENG Xiaomin. Preparation and characterization of building mortar with lauric acid-stearic acid/expanded vermiculite composite phase change material[J]. Energy Storage Science and Technology, 2019, 8(1): 92-97.

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掺月桂酸-硬脂酸/膨胀蛭石复合相变材料建筑砂浆的制备和性能表征

Preparation and characterization of building mortar with lauric acid-stearic acid/expanded vermiculite composite phase change material

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