Mixing rubber material placed during the production of "self-sulfurization" is mainly due to:
(1) The use of vulcanizing agent, accelerator is too much;
(2) The capacity of the loaded rubber is large, the temperature of the refining machine is too high, and the film is not cooled enough;
(3) or too early to add sulfur, drug dispersion is uneven resulting in the accelerator and sulfur local concentration;
(4) improper parking, that is, the parking place temperature is too high, air circulation is not.

How to reduce the rubber mixing rubber Menni?
Rubber mixing rubber MENI for M (1 + 4), that is, preheating at 100 degrees for 1 minute, the rotor rotates for 4 minutes the size of the torque, that is, the size of the force that prevents the rotor from rotating. Any force that can reduce the rotor rotation can reduce the Mooney, formulated raw materials including the original rubber: natural rubber and synthetic rubber, choose natural rubber Mooney low or to natural rubber formulations to add chemical plasticizer (physical plasticizer effect is not good) is a good choice, synthetic rubber generally do not add a plasticizer, usually can be added to some of the so-called dispersing agent of low molecular weight lipids or internal release agents and so on, such as the hardness of the requirements of the case is not strict, of course, can also add stearic acid or oleic acid. Can also increase the amount of stearic acid or oil; if in the process, you can increase the pressure on the top of the bolt or appropriately increase the temperature of the rubber discharge, if the conditions allow to reduce the temperature of the cooling water can also reduce the rubber mixing rubber Menni.

Factors affecting the mixing effect of the refining machine
Mixing machine mixing and opening machine mixing, compared with the mixing time is short, high efficiency, high degree of mechanization and automation, good quality rubber, low labor intensity, safe operation, small loss of drugs flying, environmental health conditions, etc., but the mixing machine mixing room heat dissipation difficulties, mixing temperature is high and difficult to control, so that the temperature-sensitive rubber is limited, not suitable for light-colored rubber and varieties of frequent changes in the mixing of the rubber. In addition, the compactor mixing also needs to be equipped with the corresponding lower piece of equipment.