GB/T 1766-2008 "Paints and varnishes — Rating schemes of degradation of coatings" specifies the principles and methods for rating the appearance defects of coatings after aging tests, and is applicable to the evaluation of aging performance of various coatings. It covers defect types such as discoloration, loss of gloss, chalking, cracking, etc., and employs standard rating cards or visual comparison methods for grading. Testing requires instruments such as colorimeters, gloss meters, and standard gray scales, providing a unified standard for the quantitative assessment of coating aging levels.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G50 | ICS | 87.040 |
| Release Date | 2008-06-04 00:00:00 | Implementation Date | 2008-12-01 00:00:00 |
