The measured study of natural weathering performance of reflective thermal insulation coating in hot-summer and warm-winter region

2017 3rd International Conference on Energy, Environment and Materials Science

能源学;生态环境科学;材料科学

Xia, Zhao^1 ; Dafu, Weng^2 ; Jie, Gu^3 ; Binbin, Li^3

Xiamen Academy of Building Research Group Co. Ltd., Xiamen

361004, China^1

Xiamen Engineering Centre Inspection Co. Ltd., Xiamen

361004, China^2

Xiamen Academy of Building Research and Industrialization Co. Ltd., Xiamen

361004, China^3

关键词: Attenuation performance;    Coating layer;    Natural weathering;    Reflectance ratio;    Thermal insulation coatings;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/94/1/012150/pdf
DOI  :  10.1088/1755-1315/94/1/012150

来源: IOP

【 摘 要 】

In order to study the attenuation performance of solar direct reflectance of reflective thermal insulation coating under natural weathering, we conducted a measured study on five coatings with the built natural weathering platform. After the 18-month natural weathering experiments, the color of coating templets turn undertint or black with coating layer pulverized and fallen off, some of the templets starting to crack, fall off and go mouldy. Meanwhile, the reflectance ratio of reflective thermal insulation coating decreased significantly after 3 to 6 months, the degree of attenuation of the five templets is 2% to 28%. After 18 months' exposure to the blazing sun, the most significant degree of attenuation reached 46%. The solar direct reflectance of coating templet of the same brand remained high as before after natural weathering with an initial high solar direct reflectance.