Rubber moulding machine|How to set the temperature of the rubber vulcanization mold temperature machine?
The rubber vulcanization mold temperature machine is specially designed for flat vulcanization and drum vulcanization in the rubber industry. The rubber vulcanization mold temperature machine is a temperature control device that uses heat transfer oil for circulating heating. It is suitable for various temperature ranges between 25 ℃ and 300 ℃. For rubber molding applications, the temperature of the mold temperature machine can be accurately and reliably controlled within ±0.5°C, saving more than 35% of electricity.
Temperature is the basic condition of the rubber vulcanization reaction, which directly affects the vulcanization speed and product quality. As an important temperature control device, how to set the temperature of the rubber vulcanization mold temperature machine?
The temperature of the rubber vulcanization mold temperature machine should be determined according to the compound formula, and the important thing is that it depends on the type of rubber and the vulcanization system. In recent years, with the increase of room temperature vulcanization compounds and the emergence of high temperature vulcanization, the vulcanization temperature tends to two extremes.
The vulcanization temperature and the vulcanization time are interdependent, the vulcanization temperature is high, the vulcanization speed is fast, and the vulcanization time is short; the vulcanization temperature is low, the vulcanization speed is slow, and the vulcanization time is longer. Calculations show that when the vulcanization temperature differs by 10°C, the vulcanization time differs by two times. In other words, if the temperature is increased by 10°C, the vulcanization time is doubled, and the temperature is reduced by 10°C, and the vulcanization time is doubled. The rubber vulcanization mold temperature machine is set to a higher temperature to increase the vulcanization temperature, which can shorten the vulcanization time and improve the production efficiency. After the temperature is increased to a certain level, it will more or less affect the rubber performance.
However, high temperature has a destructive effect on the fiber material in rubber products, which will reduce its strength. Therefore, corresponding technical measures must be taken to increase the vulcanization temperature, but the vulcanization temperature cannot be increased indefinitely. When setting the temperature of the rubber vulcanization mold, the rubber type, vulcanization system, vulcanization process and product structure should all be considered.
Practice shows that the vulcanization temperature of various rubber materials should be considered as: natural rubber <143℃, not exceeding 160℃; styrene butadiene rubber <180℃, isoprene rubber, butadiene rubber <151℃; neoprene <151℃, butadiene rubber Base rubber＜170℃, nitrile rubber＜180℃
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