使用条件对水性聚氨酯外墙弹性涂料拉伸性能的影响  

Influence of Service Conditions on Tensile Properties of Waterborne Polyurethane Exterior Wall Elastic Coating Material

作　　者：胡朋举 肖军[1] 刘兵兵[1] 康全影 HU Pengju;XIAO Jun;LIU Bingbing;KANG Quanying(National Center for Quality Supervision and Test of Environmental Protection Products,Shijiazhuang 050091,China)

机构地区：[1]国家环保产品质量监督检验中心,石家庄050091

出　　处：《理化检验（物理分册）》2021年第9期27-29,33,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：为分析水性聚氨酯外墙弹性建筑涂料的使用条件对其拉伸性能的影响,依据JG/T 172-2014的要求对涂料试件进行拉伸试验,分析了水溶液浸泡、温度、老化时间等对其拉伸性能的影响。结果表明:3种条件中水溶液浸泡对拉伸性能影响最大;拉伸性能随温度的升高先上升再下降;随老化时间的增长,拉伸性能逐渐下降。In order to analyze the influence of different service conditions of waterborne polyurethane exterior wall elastic architectural coatings on tensile properties, tensile tests were carried out on the coating material sample according to the requirements of JG/T 172—2014, and the effects of aqueous solution immersion, temperature and aging time on the tensile properties of that were analyzed. The results show that the influence of three conditions on tensile properties of water solution immersion are the greatest. Tensile properties first rise and then decrease with the increase of temperature. With the increase of aging time, tensile properties gradually decrease.

关 键 词：聚氨酯 弹性涂料 抗拉强度 断后伸长率 

分 类 号：TB332[一般工业技术—材料科学与工程]