Addition molding sealant is a common type of sealant, and its vulcanization reaction mechanism is to connect colloidal particles together through cross-linking reaction, forming a strong network structure. This network structure can effectively fill and seal small gaps on the surface of objects, preventing the penetration of liquids or gases. In the vulcanization reaction of addition molding sealant, vulcanizing agents and accelerators are usually added to accelerate the crosslinking reaction.
A vulcanizing agent is a chemical substance that can trigger a vulcanization reaction, and its function is to promote the crosslinking reaction of thiol groups in polymer molecules, forming a cross-linked structure. Promoters are chemical substances that can accelerate the vulcanization reaction by reacting with thiol groups to increase the rate and efficiency of crosslinking reactions. During the vulcanization reaction, the vulcanizing agent and promoter will react chemically with the thiol groups in the polymer molecules, forming vulcanization bonds, thereby promoting the interconnection of polymer molecules and forming cross-linked structures.
The vulcanization reaction mechanism of addition molding sealing adhesive is a complex process that involves the interaction between multiple chemical substances. During the reaction process, factors such as the amount of vulcanizing agents and accelerators added, reaction temperature, and time can affect the rate and effectiveness of the vulcanization reaction. By regulating these factors, the rate and terminal performance of the vulcanization reaction of the addition molding sealant can be controlled, thereby achieving optimization of the sealant performance.
Overall, the vulcanization reaction mechanism of addition molding sealing adhesive is a complex and precise process that requires precise control and adjustment in practical applications. By conducting in-depth research on its vulcanization reaction mechanism, we can better understand the performance characteristics and application scope of addition molding sealant, providing theoretical support and guidance for its application in various sealing adhesive fields.