In the synthesis of silicone rubber, there is always the mediation of various catalysts and silica white carbon black. The same semi-finished raw materials can not be without the addition of various colored rubber and vulcanizing agent auxiliary materials in the process of processing silicone products. Therefore, different types of vulcanizing agents can play different roles and effects. The role of vulcanizing agent is a very important auxiliary material in silica gel products. With good use of vulcanizing agent, the product is icing on the cake; If you don't use it well, you will have big problems! Platinum curing agent will replace peroxide for medical and food grade silica gel products in the future, which is also the general trend of the excipient market in the future.

Generally, the common vulcanizing agent is mainly peroxide, which is used for the production and vulcanization of ordinary molded silica gel products. Its main characteristics are transparency and plain tablets. Generally, most silica gel products will choose this type of vulcanizing agent without special requirements. It is mainly used for industrial accessories, electronic silica gel parts, silica gel seals, etc., which account for most of the products. It belongs to the national standard model products!

The common odorless vulcanizing agent in the market is a common tasteless peroxide at present. It is mainly used for silicone rubber products that are molded and pressed to contact human skin, such as children's toys, silicone daily necessities, silicone ornaments, etc. It is applicable to colored parts, transparent and white products. It can smell slightly after adding sulfur once, and it is better to vulcanize in the second stage (180-200 ℃ for 4-8 hours). The product is flammable. When mixing, add silicone curing agent and the reinforcing agent of the same proportion to mix well, and then quickly add the remaining raw materials to avoid ignition. Due to the defects, sour taste, flammable and volatile after secondary vulcanization, it is no longer suitable for children's toys, tableware, food contact with silicone products, and the substitute platinum vulcanizer, which can be tasteless and non-toxic, and can pass the FDA Germany LFGD high requirements certification.

Transparent paste flavorless anti yellowing curing agent, which is a mixture of peroxide and raw rubber carrier, is also used in the molding and vulcanization process of silica gel products, for long-term use in high-quality products, and for preventing yellowing of transparent, translucent, white, semi transparent colors and other products. In transparent or white pieces, it can ensure that the product will not be yellowed within multiple vulcanizations at high temperature (or baking within 200 ℃ for about 4 hours for secondary vulcanization), It is applicable to the yellowing resistance of colored parts, which can ensure that colored parts will not change color after multiple vulcanization and will not change color after long-term use!