多场耦合循环作用下屋面保温材料耐候性能  

Weathering Resistance of Roofing Insulation Materials under Multi Field Coupling Cycles

作　　者：丁杨 周双喜[2] 王中平[3] 黄神恩 佘安明 DING Yang;ZHOU Shuangxi;WANG Zhongping;HUANG Shen'en;SHE Anming(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;School of Civil Engineering and Architecture,East China Jiaotong University,Nanchang 330013,China;Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University,Shanghai 201804,China)

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058 [2]华东交通大学土木建筑学院,江西南昌330013 [3]同济大学先进土木工程材料教育部重点实验室,上海201804

出　　处：《建筑材料学报》2019年第4期638-644,650,共8页Journal of Building Materials

基　　金：“十三五”国家重点研发计划项目(2016YFC0700807);江西省重点研发计划项目(20171BBG70078)

摘　　要：对聚氨酯板、泡沫混凝土板和真空绝热板分别展开冻融、湿热、干湿、高低温和多场耦合循环作用下的耐候性能试验,并结合荷载和湿度等因素对屋面保温复合材料及部品的传热规律和施工过程进行模拟.结果表明:泡沫混凝土板和聚氨酯板在耐候性能试验中质量损失率较大,导热系数随时间延长逐渐上升;而真空绝热板在表面阻隔膜不被刺穿的情况下,其导热系数和质量损失率无显著变化.模拟计算的结果表明:当考虑结构变形时,部品底部温度增长5%.Weathering resistance of polyurethane board,foam concrete board and vacuum insulation panel under the functions of freeze-thaw,humid-heat,dry-wet,high-low temperature and multi field coupling cycle,combined with load and moisture migration and other factors on roofing insulation composite materials and parts.The heat transfer rule and construction process were simulated.It is shown that the mass loss rate of the foam concrete board and the polyurethane board in the weathering resistance is larger,and the thermal conductivity is gradually increased with time.However,the thermal conductivity and the mass loss rate of the vacuum insulation panel are not significant without being punctured by external pressure.The results of the simulation calculations show that the bottom temperature increases by 5%when structural deformation is considered.

关 键 词：保温材料 导热系数 耐候性试验 热湿固耦合 防水层 

分 类 号：TQ02[化学工程] TU551[建筑科学—建筑技术科学]