GB/T 1740-2007 "Method for Determination of Resistance to Damp Heat of Paint Film" specifies the method for determining the resistance to damp heat of paint films, applicable to coatings such as colored paints and varnishes. The test panels are placed in a constant temperature and humidity test chamber at a temperature of 47±1°C and a relative humidity of 96±2%. After being stored for specified periods, the panels are evaluated for damage phenomena such as rusting, blistering, and discoloration. The test requires the use of instruments such as constant temperature and humidity test chambers, paint film thickness gauges, and adhesion testers to assess the durability of the paint film in damp and hot environments.
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 | 2007-09-11 00:00:00 | Implementation Date | 2008-04-01 00:00:00 |
