GB/T 41940-2022 specifies the methods for determining the viscosity (e.g., MS*) and stress relaxation rate of unvulcanized rubber using a rotorless sealed shear rheometer (e.g., MDR). This instrument simulates the sealed shear environment of an internal mixer or extruder, enabling a more accurate assessment of the compound's processing properties (e.g., flowability, scorch safety) and vulcanization characteristics, making it a critical test in the modern rubber industry.
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 | G40 | ICS | 83.060 |
| Release Date | 2022-12-30 00:00:00 | Implementation Date | 2023-04-01 00:00:00 |
