水性阻隔型隔热涂料的制备与性能研究  

Preparation of waterborne thermal barrier insulating paint and study on its properties

作　　者：陈中华[1] 吴梓轩 刘文杰 CHEN Zhong-hua;WU Zi-xuan;LIU Wen-jie(College of Materials Science and Engineering,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学材料科学与工程学院,广东广州510640 [2]广州集泰化工股份有限公司,广东广州510700

出　　处：《电镀与涂饰》2019年第18期978-983,共6页Electroplating & Finishing

摘　　要：对不同丙烯酸乳液和隔热填料的物理性质进行了比较,选用水性苯丙乳液为成膜基料,二氧化硅气凝胶为隔热填料,制备了阻隔型水性隔热涂料。研究了隔热填料的用量和涂层厚度对涂层隔热性能的影响,以及聚氨酯缔合型增稠剂的用量对涂料储存稳定性的影响。结果表明,当聚氨酯缔合型增稠剂用量为0.2%,二氧化硅气凝胶添加量为3%时,涂料储存30 d不分层。当涂层厚度为2 mm时,其隔热性能最佳,导热系数为0.061 W/(m·K),隔热温差为20℃,综合性能良好。The physical properties of different acrylic emulsions and thermal insulating fillers were compared.A waterborne thermal barrier insulating paint was prepared with waterborne styrene-acrylic emulsion as binder and silica aerogel as thermal insulation filler.The effects of the amount of thermal insulating filler and coating thickness on thermal insulation property of the coating,and the effect of the dosage of associative polyurethane thickener on storage stability of the paint were studied.The results showed that the paint prepared with polyurethane associative thickener 0.2%and silica aerogel 3%did not form layers after being stored for 30 days.The coating obtained with the paint had a thermal conductivity of 0.061 W/(m·K)and good overall performance,and showed the best thermal insulation performance when its thickness was 2 mm.The temperature difference between the test panel with and without the coating was 20℃.

关 键 词：水性阻隔型隔热涂料 苯丙乳液 空心玻璃微珠 二氧化硅气凝胶 

分 类 号：TQ633[化学工程—精细化工]