Study on estimation of gloss retention decrease of coating materials exposed to outdoor

Abstract

Gloss retention is known as indicator on durability of coating materials. It seems important to estimate the gloss retention in order to estimate the service life of coating materials for maintenance of buildings. Previous study proposed some methods on the gloss retention estimation, however, it was not established. In this paper, we dealt with the estimation methods on gloss retention decrease of coating materials exposed to outdoor based on literature survey. From the results, we proposed estimation equation on the gloss retention, and clarified correlation between outdoor exposure test results and the estimation results. We also calculated the service life of coating materials from the view point of beauty.