GB/T 21867.2-2008 "Pigments and extenders—Methods of assessment of dispersion characteristics—Part 2: Assessment from the change in fineness of grind" specifies a method for evaluating the dispersibility of pigments by measuring the change in fineness of grind. This standard is applicable to various types of pigments and extenders. The method involves grinding a pigment paste using grinding equipment and measuring the fineness values at different grinding times. A smaller fineness value indicates better dispersibility. The test requires instruments such as a grind gauge, grinding machine, and stirring device, providing a straightforward approach for assessing the degree of pigment dispersion.
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 | G53 | ICS | 87.060.10 |
| Release Date | 2008-05-14 00:00:00 | Implementation Date | 2008-10-01 00:00:00 |
