Study on performance of high reflectance paint for building.

Part8 Weathering test of different coating of the color and the reflectance of solar radiation after weathering test.

Abstract

We reported outdoor revelation four years later and a result 5,000 hours after the promotion weatherability about the weatherproof examination that continued by a previous report(part5）.By these weatherproof examinations, I went mainly on a gray color.　It is often that the high reflectance paint is painted as a main use on a roof part, which deterioration generally accelerates on most rapidly among the parts of buildings and it is thought that the durability of the paint is related to the durability of the performance to block the heat.In this report,it followed a previous report(part3), we conducted an investigation of the durability of the performance to block the heat with the high reflectance paint by a test of natural wethering test for two years and accelerated weathering test for 3000 hours.