GB/T 1232.2-2025: This standard is the latest part of the series for testing unvulcanized rubber, specifying in detail the methods for determining scorch time and vulcanization index using a Mooney viscometer. By continuously monitoring the viscosity change curve of the compound at specific temperatures, it precisely calculates the time required for torque to rise to a specified value. This scientifically evaluates the compound's resistance to premature vulcanization (scorching) during high-temperature processing such as mixing and extrusion, which is crucial for ensuring production safety and product consistency. This method serves as a core testing approach for controlling the process window in the rubber processing 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 | G 40 | ICS | 83.060 |
| Release Date | 2025-04-25 00:00:00 | Implementation Date | 2025-11-01 00:00:00 |
