In the synthesis of silicone rubber, it is necessary to mediate various catalysts and silica white carbon black. The same semi-finished raw materials are indispensable in the process of curing silicone products. Different types of vulcanizing agents can play different roles and effects. The role of vulcanizing agent is a very important auxiliary material in silicone products. After the vulcanizing agent is used well, the product is icing on the cake; if it is not used properly, major problems will occur! In the future of medical and food-grade silicone products, platinum vulcanizing agents will replace peroxides, which is also the general trend of the excipient market in the future.
Generally, ordinary vulcanizing agents are mainly peroxides, which are used for vulcanization of ordinary molded silicone products. The main characteristics are transparent and ordinary tablets. Most silicone products will choose vulcanizing agents of this type when there is no special requirement. Used for industrial parts, electronic silicone parts, silicone seals, etc., which occupy the majority and belong to the national standard model products!
The common odorless vulcanizing agent commonly used in the market is a common odorless peroxide. It is mainly used for the molding and molding of silicone rubber products that contact the human skin, such as children's toys, silicone daily necessities, silicone decorations, and so on. It is suitable for colored parts and transparent, white products. It can be slightly smelled after one sulfurization, and the second stage vulcanization is better. (180-200 ° C for 4-8 hours), the product is flammable. Add silicone vulcanizing agent and the same proportion of reinforcing agent when mixing, and then add the remaining raw materials quickly to avoid fire. Due to secondary vulcanization, defects, acidity, flammability and volatility, it is currently not suitable for children's toys, tableware, food contact silicone products, alternative platinum vulcanizing agents, completely tasteless and non-toxic, can pass the US FDA Germany LFGD high requirements Certified.

Transparent paste-like odorless anti-yellowing vulcanizing agent. It is a mixture of peroxide and raw rubber carrier. It is also used in the molding and vulcanization of silicone products. It is used for long-term use in high-quality products. It is used for transparent, translucent and white, translucent. Products such as color can prevent yellowing. In transparent or white parts, it can be guaranteed to be cured within a high temperature for multiple times (or secondary curing can be baked within 200 ° C for about 4 hours). The product does not turn yellow. It is suitable for colored parts to resist yellowing. Ensure that the colored parts do not change color after repeated vulcanization and long-term use!

Platinum vulcanizing agent is also known as platinum water. Its vulcanization principle is that in the presence of the catalyst Pt, a hydrosilylation reaction between a hydrogen-containing silicone oil and a vinyl double bond is achieved to achieve the purpose of cross-linking and vulcanization. Product use, play the role of vulcanization.

Because the hydrosilylation reaction easily occurs in the presence of Pt catalyst, the platinum vulcanizing agent is divided into component A (TNA-00PS / J) and B (TNB-00PS / J)!

So how does it perform? Compared with other vulcanizing agents, the safety and environmental safety of Parkin fluidization is better. It has no odor after vulcanization with silicone tube, high level of health and environmental protection, high transparency of silicone tube, and greatly improved product tensile strength and resilience. Widely used in medical supplies, baby supplies, tableware supplies and other industries.