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

[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.

[发布机构] 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

[效力级别] 生态环境科学

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