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- 保温材料与建筑节能
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轻质陶粒对磷建筑石膏保温性能的影响
作者：廖仕雄1，赵志曼1，2，吴磊3，全思臣3，刘卓1，王存1，成俊辰1，张芷绮1
（1.昆明理工大学 建筑工程学院，云南 昆明 650500；2.昆明理工大学 云南省土木工程防灾重点实验室，云南 昆明 650500；3.云南凝创环保科技有限公司，云南 安宁 650500）
摘要：探究轻质黏土陶粒粒径及掺量对磷建筑石膏保温性能的影响，分析了相关作用机理。结果表明，掺入0.2%的纤维素醚能抑制轻质黏土陶粒的上浮，并提高了磷建筑石膏的保水性。轻质黏土陶粒掺量为12%，粒径为8～11 mm时，石膏基复合材料的表观密度为1102 kg/m3，绝干抗折强度为1.89 MPa，绝干抗压强度为8.12 MPa，导热系数为0.17 W/（m·K），相对空白组分别下降了13.2%、58.8%、45.6%、64.5%。
关键词：纤维素醚；磷建筑石膏；轻质黏土陶粒
中图分类号：TU55+1.33 文献标识码：A 文章编号：1001-702X（2021）02-0142-04
Effects of lightweight ceramsite on heat insulation performance of phosphorus gypsum
LIAO Shixiong1，ZHAO Zhiman1，2，WU Lei3，QUAN Sichen3，LIU Zhuo1，WANG Cun1，CHENG Junchen1，ZHANG Zhiqi1
（1.College of Architectural Engineering，Kunming University of Science and Technology，Kunming 650500，China；2.Kunming University of Science and Technology，Yunnan Key Laboratory of Civil Engineering Disaster Prevention，Kunming 650500，China；3.Yunnan Ningchuang Environmental Protection Technology Co. Ltd.，Anning 650500，China）
Abstract：The influence of light clay ceramicite with different particle size and content on the thermal insulation performance of phosphor building gypsum is investigated，and the relevant mechanism is further analyzed. 0.2% cellulose ether was added to inhibit the buoyancy of light clay ceramsite and increase the water retention of phosphorus building gypsum. The results show that when the content of lightweight clay ceramsite is 12% and the particle size is 8～11 mm，the apparent density of gypsum matrix composites，the absolute dry flexibility and compressive strength，the optimal thermal conductivity are 1102 kg/m3，1.89 MPa，8.12 MPa and 0.17 W/（m·K），respectively. Compared with the blank group，the thermal conductivity is reduced by 13.2%，58.8%，45.6% and 64.5% respectively.
Key words：cellulose ether，phosphorus building gypsum，light clay ceramicite