Study on performance of the clear coating for the high design building materials repair

Part8. Examination of durability performance of improved clear paint.

Abstract

As a result of evaluating the performance of various clear paints after aging in the previous report, the deterioration of the test piece coated on the photocatalytic siding board was remarkable, and the test results of the water-based clear paint tended to be particularly bad.However, the water-based clear paints used in these tests have been on the market for more than 15 years, and it is considered that the improved clear paints released after that have improved in both quality and performance.In this study, various tests will be conducted on water-based improved clear paints to understand their performance.In this report, the progress report of the color difference measurement of the specimen after 5 months (Tsukuba City) and 7 months (Funabashi City) of the outdoor exposure test and 2000 hours of the accelerated weather resistance test, the freeze-thaw resistance test, and the secondary immersion in hot water We will report on the results of the color difference and adhesion tests after the adhesion test.