What happens when food grade silicone is heated?

Silicone is resistant to high temperatures and can be used for heating and baking. The temperature resistance of ordinary condensation-type industrial-grade silica gel is mostly about 100-150 degrees, and the temperature resistance of addition-type food-grade silica gel is about 250-300 degrees. Food-grade silicone is generally used to make food-grade silicone molds, which require high-temperature baking.

   So what will happen after food-grade silica gel is heated? In fact, food-grade silica gel will not undergo any changes after heating. As long as the temperature is controlled at around 250 degrees, the state and volume of the silica gel will not change. Whitening occurs.

After ordinary mold silicone is baked at high temperature, the texture of the silicone itself will change, the overall performance will become very brittle, and shrinkage may occur. The problem is that the silicone is not resistant to pulling and can easily tear with force. When ordinary mold silicone meets resin crafts, if the silicone does not add a burn-resistant agent, the resin will release a large amount of epoxy compounds during the curing process. Over time, a layer of whitened material will appear on the inner wall of the mold. After adding the burn-resistant agent, the components of the burn-resistant agent will be neutralized with the resin.

   Therefore, if some customers need silica gel to withstand high temperatures, it would be better to choose additive food-grade silica gel.