At present, the application of silane coupling agent in coatings is mainly concentrated in three aspects: used in primers to enhance the adhesion between substrates and coatings, used to improve the dispersion of pigments or fillers in solvent-based coatings or water-based coatings, and used in Modification of coating resins to make new functional coatings. Silane coupling agent is used as an adhesion-increasing additive to bond coatings to a variety of substrate surfaces, which not only reduces corrosion and peeling in wet environments, but also improves scratch and environmental resistance. Silane coupling agent are widely used in acrylate resins, epoxy resins and polyurethane coatings. They are effective in solvent-based, high-solids and water-based coatings. They can be used as primers and admixtures. Silane coupling agent can also act as pigment dispersant and binder in coatings, and they can be firmly combined with various inorganic pigments and fillers. Once the silanes are attached to the surface of the filler, they can reduce the viscosity of the coating and improve the dispersion of the filler, thereby improving coverage and improving the durability and brushability of the coating.

The role of silane coupling agent in primers. Silane coupling agents are very effective in improving the adhesion between two incompatible materials such as metals, glasses and organic polymers. As a binder enhancer, the silane coupling agent combines the coating and the substrate in the form of a chemical chain through a silane "bridge", which can improve the adhesion, durability, thermal shock resistance, and moisture resistance between coatings. , Corrosion resistance.

Silane coupling agent as an adhesion promoter. When the paint contains a small amount of silane coupling agent, in the interface layer between the paint base and the substrate, the silane and the paint base interact to form a network structure in which the silane and the paint base penetrate each other, which enhances the cohesion of the paint and the stability of water erosion resistance. properties, and the stress is transferred from the high-modulus substrate to the low-modulus binder, thereby significantly improving the adhesion between the substrate and the substrate.

Silane coupling agent for the modification of pigments and fillers. Silane coupling agent treats pigments and fillers so that they can be easily wetted by the binder, and the pigments or fillers are stably dispersed in the binder to prevent precipitation and agglomeration. After the surface of the filler is modified by the silane coupling agent, the viscosity of the coating is greatly reduced. Even if the amount of pigment and filler is increased, the flow of the coating will not be affected, which will increase the output of the coating and reduce the production cost. Most minerals The hydrophilic surfaces of fillers and pigments can be modified to hydrophobic surfaces to improve their compatibility with hydrophobic organic resins.

Commercial products of Co-Formula include isocyanate silane, aminosilane, 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 contact us.