High temperature resistant silicone mixed silicone rubber is a common silicone product. Ordinary silicone can withstand high temperatures between 200°C and 300°C. The maximum temperature can reach about 350°C in a short period of time, and is often used for silicone with special performance requirements. High temperature resistant silicone hose is a hose composed of four or five layers of reinforced fabric and silicone rubber. The thickness of the silicone tube fabric layer is 0.4mm to 0.5mm. The product can be used continuously at 250℃ and intermittently at 300℃.

The vulcanization of silicone rubber products refers to the vulcanization of unvulcanized silicone rubber under the conditions of vulcanization time, temperature and pressure. The process of chemical cross-linking of silicone rubber molecules. We all know that low-temperature vulcanization is good for product performance, but the product output will be reduced and the cost will be increased. Therefore, many manufacturers will wonder how to increase the vulcanization speed of silicone rubber products, shorten molding time, improve production efficiency, and reduce production costs without affecting product quality?

1. You can appropriately increase the amount of vulcanizing agent added to the silicone raw material, or use a rapid vulcanizing agent to speed up the vulcanization speed of silicone products and shorten the molding time.

2. The vulcanization temperature during molding can be appropriately increased, but the structure of general products will be different, so the specific temperature needs to be determined by experiment.

3. Change the discharging method of silicone raw materials, so that during the pressurization process of the mold, the silicone raw materials can cover the entire inner wall of the mold as much as possible.

4. Change the exhaust frequency and exhaust stroke. According to common sense, the larger the exhaust stroke, the more exhaust times, which will be beneficial to exhaust. But this is not the case in reality. We need to make a decision based on the structure of the product. Some silicone products have a large exhaust stroke, which may cause bubbles and other problems.

5. The molding operator speeds up the operation and minimizes the out-of-mold time to stabilize the temperature of the silicone product mold and increase the vulcanization speed of the silicone product.

Ultra-high hardness silicone foam IOTA-HT-840