The coupling mechanism of coupling agents

Regarding the mechanism of action of titanium ester coupling agents, it is generally believed that only one isopropoxide group in the monoalkoxytitanium ester coupling agent is a hydrolytic group that can couple with inorganic substances, thus forming a monolayer on the surface of inorganic pigments and fillers. In contrast, titanium ester coupling agents can more tightly connect inorganic pigments and fillers with organic polymer materials, fully utilizing the function of each titanium ester molecule.

Therefore, the dosage is small and the effect is great. Due to the single-molecule encapsulation of titanium ester coupling agents on the surface of inorganic pigments and fillers to replace the originally adsorbed trace amounts of water and gas, and the hydrophobic non-aqueous intermediate group closure of long carbon chains in the molecules, the compatibility with organic polymer substrates is increased, and the free energy at the interface is reduced, which is conducive to the wetting and dispersion of powder aggregates by organic polymer substrates.

Given that the application prospects of titanium ester coupling agents in the coating industry are very broad. Some domestic units are developing and producing titanium ester coupling agents, which have already been applied and developed in calcium and plastic materials. The variety and structure of coatings are shifting from low-end to mid to high-end products.

The variety of coatings is gradually evolving from traditional solvent based coatings to water-based high solid molecular solvents, powders, and inorganic coatings. In addition to significantly improving the decorative and protective properties of coatings, it also requires coatings to develop towards high-performance, multifunctional, special effects, and specialized directions, requiring various new types of functional coatings. Due to the unique structure and diverse, multifunctional characteristics of titanium ester coupling agents. Although the dosage is small, it can meet the performance requirements of coatings in various aspects.