含相变材料的定型复合建材储能调温及力学特性

doi:10.16085/j.issn.1000-6613.2018-2157

摘要/Abstract

摘要：

使用微胶囊化和直接吸附法两种方式将相变材料与水泥结合分别制成了含相变微胶囊水泥基复合建材及含相变材料水泥基复合建材，搭建实验测试系统，对复合建材的调温储能特性进行了测试。微胶囊化相变材料和纯相变材料的加入对水泥基建材的微观结构形貌具有较为明显的影响。热重曲线显示纯水泥、相变微胶囊-水泥、相变材料-水泥试样的失重率依次增加，相变微胶囊-水泥式样的稳定性最好；复合成分所占质量分数相同时，相变材料-水泥试块强度略低于相变微胶囊-水泥试块；调温测试表明，在水泥中添加相变微胶囊颗粒或纯相变材料时均具有一定的调温储能功能，能明显减缓水泥基建材的温度在相变温度附近的波动；尽管直接吸附法制备的相变材料-水泥复合建材具有较好的调温性能，但其可循环性较差，伴有刺激性气味逸出，实用性较差。因此相变微胶囊-水泥复合较适宜作为新型建材推广使用。

关键词: 相变, 相变微胶囊, 制备, 复合材料, 热能储存

Abstract:

In this paper, based on the experimental method, the n-dodecanol as phase change materials was combined with cement using microencapsulation and direct adsorption method to prepare microencapsulated phase change material cement-based composite building materials (MPCM-concrete) and phase change material cement-based composite building materials (PCM-concrete), respectively. Parameters such as microstructure, thermal performance, and compression resistance were tested and analyzed. The SEM results showed that the addition of MPCM and PCM had a significant effect on the microstructure of cement-based building materials. The TGA curves indicated that the weight loss rate of concrete, MPCM-concrete and PCM-concrete samples increased sequentially mainly due to the increase in pure PCM content. Furthermore, MPCM-concrete was more stable than PCM-concrete. With the same mass fraction of the composite components, the strength of PCM-concrete was slightly lower than the MPCM-concrete. The temperature regulation test showed that MPCM-concrete and PCM-concrete all had certain temperature regulation performance, which can significantly reduce temperature fluctuation of cement-based building materials around the phase transition temperature. Under the same mass content of the composite components condition, the PCM-concrete had better temperature regulation performance, but its cyclability was poor, and the internal PCM content was gradually lost with the thermal cycles and accompanied by irritant smell, leading to poor practicality of PCM-concrete. Therefore, MPCM-concrete was more suitable for use as a new building material.

Key words: phase change, microencapsulated phase change material, preparation, composites, thermal energy storage

中图分类号:

TB34

鲁进利,李洋,韩亚芳,杨高杰,钱付平. 含相变材料的定型复合建材储能调温及力学特性[J]. 化工进展, 2019, 38(08): 3801-3808.

Jinli LU,Yang LI,Yafang HAN,Gaojie YANG,Fuping QIAN. Energy storage and mechanical properties of shaped composite building materials containing phase change materials[J]. Chemical Industry and Engineering Progress, 2019, 38(08): 3801-3808.

图/表 13

参考文献 22

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成分	质量/g
苯乙烯马来酸酐共聚物	2
氢氧化钠	0.6
聚氨酯丙烯酸酯	9.0
1,4-丁二醇二丙烯酸酯	3.0
丙烯酸	2.0
偶氮二异丁腈	0.15
正十二烷醇	12.0
去离子水	120

成分	质量/g
苯乙烯马来酸酐共聚物	2
氢氧化钠	0.6
聚氨酯丙烯酸酯	9.0
1,4-丁二醇二丙烯酸酯	3.0
丙烯酸	2.0
偶氮二异丁腈	0.15
正十二烷醇	12.0
去离子水	120

样品	编号	质量/g				添加物质量分数/%
样品	编号	水泥	水	MPCM(以正十二烷醇为芯材)	PCM (正十二烷醇)	添加物质量分数/%
水泥	1	500	200	0	0	0
MPCM-水泥	2-1	500	200	20	0	4
	2-2	500	200	40	0	8
	2-3	500	200	60	0	12
PCM-水泥	3-1	500	200	0	20	4
	3-2	500	200	0	40	8
	3-3	500	200	0	60	12

样品	编号	质量/g				添加物质量分数/%
样品	编号	水泥	水	MPCM(以正十二烷醇为芯材)	PCM (正十二烷醇)	添加物质量分数/%
水泥	1	500	200	0	0	0
MPCM-水泥	2-1	500	200	20	0	4
	2-2	500	200	40	0	8
	2-3	500	200	60	0	12
PCM-水泥	3-1	500	200	0	20	4
	3-2	500	200	0	40	8
	3-3	500	200	0	60	12

材料	融化/5℃·min^-1		结晶/5℃·min^-1
材料	峰值温度/℃	潜热值/kJ·kg^-1	峰值温度/℃	潜热值/kJ·kg^-1
MPCM	22.27	88.89	19.85	76.68
PCM	24.22	216.0	19.61	207.8