Why should the compound be inspected quickly? What are the items and purposes of the inspected quickly?

In order to control the quality of the mixed rubber, to ensure the performance of the rubber material in the future processing process and the performance of the final product. In production, the mixing glue should be inspected quickly every time. The purpose of the rapid inspection is to judge whether the coordination agent in the glue is dispersed well, whether there is leakage and wrong addition, and whether the operation meets the process requirements, so as to find problems and remedy in time.

The item that quick check has plasticity, specific gravity commonly, the determination of hardness waits .

1) Determination of plasticity: take three samples from different parts of each compound, and then measure its plasticity with a Wechsler plasticizer or Mooney viscometer.

Plasticity measurement is mainly to test the mixing degree of rubber material (such as mixing or over-mixing) and raw materials (such as raw rubber, filler, softener) is wrong or missing.

2) Determination of specific gravity: the mixing glue sample is immersed in zinc chloride aqueous solution with different specific gravity for determination.

Specific gravity measurement is mainly to check whether the rubber mixing is uniform, and whether the wrong or omission of raw rubber, packing and other raw materials.

3) determination of hardness: in the specified temperature and time will be mixed rubber samples quickly vulcanized into vulcanized rubber, and then determine the hardness value with a hardness tester. Hardness measurement is mainly to test the dispersion of filler, vulcanization uniformity and raw materials (such as vulcanization agent, promoter and raw rubber, filler, softener, etc.) is wrong to add leakage.