GB/T 21867.3-2008 "Pigments and extenders - Methods of assessment of dispersion characteristics - Part 3: Assessment from the change in gloss" specifies a method for evaluating the dispersibility of pigments by measuring changes in the gloss of coating films. This standard is applicable to various types of pigments. After dispersing the pigment, a coating film is prepared, and its gloss is measured and compared with a standard. Pigments with excellent dispersibility produce coating films with more uniform and stable gloss. The test requires instruments such as a gloss meter, applicator, and constant temperature drying oven, providing a standardized approach for assessing the relationship between pigment dispersibility and coating film appearance.
| Status | Active | ||
|---|---|---|---|
| CCS | G53 | ICS | 87.060.10 |
| Release Date | 2008-05-14 00:00:00 | Implementation Date | 2008-10-01 00:00:00 |
