GB/T 30794-2014 "Determination of Polyvinylidene Fluoride (PVDF) Content in Hot-Melt Fluororesin Coatings (Dry Film) by Melting Temperature Depression Method" specifies the method for determining the PVDF content in hot-melt fluororesin dry film coatings. The principle is based on the characteristic that the melting temperature of crystalline polymers decreases with an increase in amorphous polymer content in compatible polymer blend systems. A differential scanning calorimeter (DSC) is used to measure the melting temperatures of pure PVDF resin, standard samples, and the test samples. The PVDF content in the test sample is determined by constructing a standard curve, providing support for coating quality control.
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 | 2014-07-08 00:00:00 | Implementation Date | 2014-12-01 00:00:00 |
