GB/T 27808-2011 "Saturated Polyester Resins for Thermosetting Powder Coatings" specifies the classification, requirements, test methods, and other aspects of such resins, applicable to three types of products: epoxy-polyester hybrid, pure polyester, and polyurethane. The standard covers factory inspection indicators such as appearance, color, acid value, hydroxyl value, as well as type inspection items including softening point and glass transition temperature. Testing requires instruments such as differential scanning calorimeters, cone-and-plate viscometers, and ring-and-ball softening point apparatus, providing a unified technical basis for quality control of resins and downstream powder coating products.
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 | 2011-12-30 00:00:00 | Implementation Date | 2012-06-01 00:00:00 |
