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Coupling Agent
Mar 31, 2018

Currently adding a titanate (or zirconate) coupling agent with hydrolysis and heat resistance to an unfilled polymer, the melt phase during extrusion, blow molding and injection molding In the process, it will act as a catalyst for in-situ repolymerization, thereby improving the processability and mechanical properties of the material. At the same time, the titanate coupling agent is a compatibilizer of two or more polymers through repolymerization, copolymerization, or graft infiltration. The coupling agent is a class of substances with two different functional groups. The most important feature of the molecular structure is that the molecule contains two groups with different chemical properties, one is a group of inorganic substances, and it easily reacts with the surface of inorganic substances. The reaction; the other is an organic group that can react with synthetic resins or other polymers or generate hydrogen bonds. Therefore, coupling agents are called "molecular bridges" to improve the interface between inorganic and organic materials, thereby greatly improving the properties of composite materials such as physical properties, electrical properties, thermal properties, and optical properties.

 

The coupling agent is used in the rubber industry to improve the wear resistance and aging resistance of tires, rubber sheets, hoses, and rubber shoes, and to reduce the amount of NR, thereby reducing costs. The role of the coupling agent in the composite material lies in that it can not only react with certain groups on the surface of the reinforcement material, but also react with the matrix resin, forming an interface layer between the reinforcement material and the resin matrix, and the interface layer can transmit stress. Therefore, the adhesion strength between the reinforcing material and the resin is enhanced, the performance of the composite material is improved, and the penetration of other media to the interface is also prevented, the interface state is improved, and the aging resistance, stress resistance, and electrical insulation performance of the product are favorable.