GB/T 11185-2009 "Paints and varnishes – Bend test (conical mandrel)" specifies a method for evaluating the resistance of coatings of paints and varnishes to cracking or peeling by bending test using a conical mandrel. In the test, a coated test panel is bent 180° around a conical mandrel of specified dimensions within 2–3 seconds, and the coating is observed for any damage. The inspection requires a conical mandrel bend tester, metal test panels conforming to specifications, and tools for visual inspection, providing a standardized means for assessing the flexibility and adhesion of coatings.
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 | 2009-06-02 00:00:00 | Implementation Date | 2010-02-01 00:00:00 |