期刊
CONSTRUCTION AND BUILDING MATERIALS
卷 98, 期 -, 页码 176-184出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.conbuildmat.2015.08.045
关键词
Water based cool white roof coatings; Styrene acrylate emulsion; Solar reflectance; Dirt resistance; Artificial accelerated weather resistance
资金
- Technical Center of China State Construction Engineering Co., Ltd. [00.000.072]
The composition and the preparation process of a bi-functional cool white roof coating based on styrene acrylate copolymer and cement that integrates both a good cooling effect and good mechanical properties and water impermeability are introduced. Its optical properties, cooling effect and relevant properties after dirt and accelerated exposures are systematically explored. Compared with the conventional polymer-modified cement-based waterproof coating, the cool white roof coating based on styrene acrylate copolymer and cement has a much higher solar reflectance due to the presence of the titanium dioxide rutile and Altiris 800, and it can significantly reduce the coating surface temperature. The sticky nature of the high elastic styrene acrylate copolymer emulsion makes it easy for the cool white roof coating based on styrene acrylate copolymer and cement to collect pollutants and thus endows the coating with moderate dirt resistance. Four hundred hours of artificial accelerated weathering decreases the solar reflectance of the cool white roof coating based on styrene acrylate copolymer and cement and the cooling effect of the coating. The artificial accelerated weather resistance of the cool white roof coating based on styrene acrylate copolymer and cement is qualitatively good. (C) 2015 Elsevier Ltd. All rights reserved.
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