| 膨胀蛭石的微波法制备及在建筑节能减碳中的应用 |
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| 引用本文： | 彭慧蕴, 陈吉明, 罗利明, 刘海峰, 黄跃华, 李相锦, 习永广. 膨胀蛭石的微波法制备及在建筑节能减碳中的应用[J]. 矿产保护与利用, 2022, 42(4): 30-37. doi: 10.13779/j.cnki.issn1001-0076.2022.01.035 |
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| 作者姓名： | 彭慧蕴 陈吉明 罗利明 刘海峰 黄跃华 李相锦 习永广 |
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| 作者单位： | 西南科技大学 土木工程与建筑学院,四川 绵阳621010;西南科技大学 矿物材料及应用研究所,四川 绵阳621010;西南科技大学 矿物材料及应用研究所,四川 绵阳621010;海南科技职业大学,海南 海口571126;西南科技大学 土木工程与建筑学院,四川 绵阳621010 |
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| 基金项目： | 国家自然科学基金项目42002039 |
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| 摘 要： | 基于蛭石结构层水分子遇热瞬间汽化导致体积快速膨胀的特点，采用微波法和微波化学法对工业蛭石进行加热膨胀处理制备不同粒径的膨胀蛭石，研究了模压成型和浇注成型工艺制作膨胀蛭石/石膏基复合保温板的力学和热学等性能，评价了膨胀蛭石保温材料在建筑内墙和热工管道保温的节能效果。结果表明：以微波化学法制备的膨胀蛭石为骨料制作的保温板具有更小的密度和导热系数（0.082 W·m-1·K-1），含水率稍高；膨胀蛭石/石膏复合保温板的密度、导热系数和抗压强度随膨胀蛭石的片径增大而减小；在冬季室外平均气温为7℃条件下，与内墙和管道未增加保温层相比，节能保温样板和管道保温样板节能效率都稳定在20%，在建筑节能领域具有广阔的应用前景。
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| 关 键 词： | 膨胀蛭石 复合保温材料 导热系数 城市建筑节能 节能降碳 |
| 收稿时间： | 2022-06-20 |
Microwave Preparation of Expanded Vermiculite and Its Application in Building Energy Saving and Reducing CO2 Emission |
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| PENG Huiyun, CHEN Jiming, LUO Liming, LIU Haifeng, HUANG Yuehua, LI Xiangjin, XI Yongguang. Microwave Preparation of Expanded Vermiculite and Its Application in Building Energy Saving and Reducing CO2 Emission[J]. Conservation and Utilization of Mineral Resources, 2022, 42(4): 30-37. doi: 10.13779/j.cnki.issn1001-0076.2022.01.035 |
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| Authors: | PENG Huiyun CHEN Jiming LUO Liming LIU Haifeng HUANG Yuehua LI Xiangjin XI Yongguang |
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| Affiliation: | 1.Southwest University of Science and Technology of Civil Engineering and Architecture, Mianyang 621010, Sichuan, China;; 2.Institute of Mineral Materials and Applications, Southwest University of Science and Technology, Mianyang 621010, Sichuan, China;; 3.Hainan Vocational University of Science and Technology, Haikou 571126, Hainan, China |
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| Abstract: | Based on the characteristics of rapid volume expansion caused by instantaneous vaporization of water molecules in vermiculite structural layer when exposed to heat, the industrial vermiculite was heated and expanded by microwave method and microwave chemical method to prepare expanded vermiculite with different particle sizes; The mechanical and thermal properties of expanded vermiculite/gypsum-based composite insulation board made by mold pressing and casting molding were studied; evaluate the energy-saving effect of expanded vermiculite thermal insulation material in building interior wall and thermal pipeline. The results show that The thermal insulation board made of expanded vermiculite prepared by microwave method as aggregate has lower density and thermal conductivity (0.082 W/(m·k)), and slightly higher moisture content; The density, thermal conductivity and compressive strength of expanded vermiculite/gypsum composite insulation board will decrease with the increase of expanded vermiculite sheet diameter; Under the condition that the average outdoor temperature in winter is 7℃, the energy-saving heat preservation template and pipeline heat-preservation template can save electricity by 20% stably, which have a broad application prospects in the field of building energy conservation. |
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| Keywords: | expanded vermiculite composite insulation material thermal conductivity urban building energy conservation saving energy and reducing CO2< sub> emission |
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