Coupling agents are the stars in the field of chemical reagents, and their application scope is also quite extensive. They can enable substances with two different functional groups, one of which can react with organic substances and the other can react with adsorbed water on the surface of inorganic substances, forming a strong bond.
A Brief Discussion on the Relationship between Coupling Agents and Titanate Coupling Agents. The role of coupling agents in composite materials is to react with certain functional groups on the surface of the reinforcing material, as well as with the matrix resin, forming an interface layer between the reinforcing material and the resin matrix. The interface layer can transmit stress, thereby enhancing the adhesive strength between the material and the resin, improving the performance of the composite material, and preventing it from penetrating the interface with other media, improving the interface state, and promoting the aging resistance, stress resistance, and electrical insulation performance of the product. According to the chemical structure and composition of coupling agents, they are divided into four categories: organic chromium complexes, silanes, titanates, and aluminate compounds.
Among them, titanium ester coupling agents are themselves a part of coupling agents and can be classified into four categories based on their unique molecular structure:
One is the monoalkoxy type. This type of coupling agent is suitable for multi resin based composite material systems, especially for filling systems that do not contain free water, only chemical bonding water and physical water;
The second type is monoalkoxy pyrophosphate ester. This type of coupling agent is suitable for various resin based composite material systems, especially for filler systems with high moisture content;
The third type is chelating. This type of coupling agent is suitable for various resin based composite material systems due to their excellent hydrolytic stability,Especially suitable for polymer systems; The fourth is the coordination type. This type of coupling agent has good coupling effects in various resin based and rubber based composite material systems, overcoming the shortcomings of general coupling agents used in resin based composite material systems.
Nowadays, titanium acid ester coupling agents have a wide range of applications, surpassing other coupling agents, and their value also exceeds that of general coupling agents.
