How to prevent rubber products from scorching?

Production should be prevented from taking the following measures to prevent scorching: 
1. Raw materials should be weighed accurately, especially important is the amount of accelerator and vulcanizing agent should be weighed accurately, do not pound scale failure or weighing errors of various accelerators should be clear, do not get it wrong.

2. The order of adding materials when mixing should be correct, usually mixing and adding materials in the following order.
Raw rubber, zinc chloride, stearic acid, antioxidant, reinforcing agent and oil softener alternately added in turn, sulfur, accelerator, rubber under the sheet. Do not roll at higher temperatures, the order of addition is reversed, the accelerator in the last stage to join, it is safer to do so.

3. accelerator and vulcanizing agent to join, should take more than one batch to join, the amount of each batch should be less, and should be evenly distributed. Avoid concentrating on the local area, resulting in scorching.

4. Roller temperature should be strictly controlled, or refining room temperature. Strengthen the cooling water circulation, speed up the cooling. The use of lower-temperature deep well water cooling, the effect is better at the same time should also be stored in the lower temperature of the rubber material placed in the place, do not close to the warmth of the heat flow or direct exposure to sunlight. Just rolled under the film, the temperature is high, do not roll dense, in order to dissipate heat, it is best to be thinly ventilated cooling.