Co-Formula silane coupling agents are widely used in sealants. The main application methods are primer coating on the surface of the adhered material, surface modification of fillers, and blending with the base polymer (base glue) as an auxiliary agent.

Silane coupling agent is used for primer. The sealant with its own high strength may not achieve ideal bonding strength when applied to all substrates. This may be due to the lack of hydroxyl groups on the surface of the substrate, or it may be related to the active genes on the surface of the sealant. One of the effective means to improve the bonding strength is to prepare the primer solution with silane coupling agent as the active ingredient, and coating it on the surface of the substrate. It is worth noting that the excessive amount of primer (the concentration of silane coupling agent at the interface is too high) will lead to a decrease in the bonding strength. This may be because only a few molecular layers of the coupling agent act at the interface. , too much coupling agent will form a loose "weak interface layer" at the interface through physical adsorption or other effects, weakening the "bond bridge" effect of the silane coupling agent.

Silane coupling agents are used for surface modification of filler particles. In recent years, many studies have proved that silane coupling agents are effective agents for surface modification and modification of filler particles.

The silane coupling agent is blended with the base polymer as an adjuvant. Silane coupling agent is one of the indispensable components in the preparation process of sealant. It is mostly blended with the base polymer and other components in the form of auxiliary agents. At this time, the silane coupling agent must migrate from the polymer to the interface to work. In addition, the silane coupling agent with special structure also has the functions of water scavenger and co-catalyst. Studies have shown that some structural silane coupling agents (such as vinyltrimethoxysilane) can be used as water scavengers to remove the moisture contained in the rubber compound, which improves the storage stability and product quality of the sealant, while some The silane coupling agent with double amino structure has a catalytic effect, in which the primary amino group mainly affects the surface drying time of the sealant, and the secondary amino group mainly affects the curing speed of the sealant. The silane coupling agent with a special structure can be designed from a certain amount. To a certain extent, it controls the degree of moisture diffusion and thus affects the cross-linking and curing speed of the sealant.

Commercial products of Co-Formula include isocyanate silane, amino silane, epoxy silane, mercaptosilane, phenylsilane, vinyl silane, chlorosilane, alkyl silane, long-chain silane, silane crosslinking agent, dimethyl silicone oil, methyl hydrogen silicone oil type siloxane. In addition to these general-purpose products, Co-Formula can also provide coatings and plastic additives, silicone polymers and customized solutions for customers around the world. If it is necessary, please feel free to consult us.