The application of injection molding technology in the molding and processing of liquid silicone rubber has many advantages and has been widely recognized. However, compared to general molding and pouring processes, injection molding technology uses molding equipment that is difficult to operate, with complex molding processes and high technical requirements. If used improperly, it not only fails to produce good products, but also causes greater waste. Therefore, the advantages of injection molding cannot be fully utilized.

When the vulcanization temperature is low, the vulcanization molding takes a long time, which directly affects the elongation of the injection molding cycle and reduces production efficiency; Raising the vulcanization temperature, shortening the molding time, can improve production efficiency, reduce labor costs, and so on. However, in the actual production process, simply increasing the vulcanization temperature to improve production efficiency may not necessarily achieve the goal of reducing costs, because heating the mold to a higher temperature requires a significant increase in energy consumption, which increases energy costs. Therefore, considering the total production cost, there is a relatively optimal temperature point. According to different situations, through cost accounting, the economy is generally better when the vulcanization temperature is between 140 ℃ and 180 ℃.

In addition, from the perspective of mold materials, too high temperatures may cause significant mold deformation, affecting product quality, and in severe cases, may affect mold opening, even leading to mold failure to open. The temperature of domestically produced molds is generally not very high when it is below 170 ℃, and it is easy to encounter mold opening problems when it is above 170 ℃. For products with high precision, this problem is more likely to occur. In addition, if the vulcanization temperature is too high and the rubber material vulcanizes too quickly, bubbles will not be eliminated, forming bubble defects. Overripening can also make the product prone to breakage, affecting product performance.

Taking into account various factors, it is generally reasonable to use a vulcanization temperature of 150 ℃ to 160 ℃ for injection molding of small-sized products, which is widely used.

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