GB/T 40280-2021 is an updated and replacement version of GB/T 21059-2007, specifying the method for determining the apparent viscosity of liquid, emulsion, or dispersed resin systems using a single-cylinder (typically Brookfield-type) rotational viscometer. It provides detailed procedures for measuring the viscosity of Newtonian or non-Newtonian fluids at different shear rates and serves as a fundamental method for evaluating the processing rheology of such materials.
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 | G31 | ICS | 83.080.01 |
| Release Date | 2021-08-20 00:00:00 | Implementation Date | 2022-03-01 00:00:00 |
