GB/T 31815-2015 "Self-Cleaning Coatings for Building Exterior Surfaces" applies to the quality control of self-cleaning coatings for building exteriors, specifying core indicators such as hydrophilicity, contact angle, and stain resistance. The water contact angle on the coating surface is measured using a contact angle goniometer, while environmental aging is simulated with a UV aging test chamber. Combined with a colorimeter to detect color difference changes before and after staining, the self-cleaning effect is evaluated. Additionally, conventional performance aspects such as coating adhesion and weather resistance are assessed to provide a quality basis for product application.
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 | G51 | ICS | 87.040 |
| Release Date | 2015-07-03 00:00:00 | Implementation Date | 2016-02-01 00:00:00 |
