Coupling agents have always been an amazing additive

Coupling agents, also known as surface modifiers, are a special type of additive that Coupling agents, also referred to as surface modifiers, are a particular type of additive that is dedicated to optimizing the interfacial characteristics among the adhered substrate, fillers, and polymeric materials, significantly enhancing the binding force between inorganic substances and organic polymeric materials. In the application of adhesives, coupling agents exert a vital role, significantly improving the adhesion strength of the solid surface between the resin base of the adhesive, fillers, and the adhered substrate.

Its core feature lies in the fact that its molecular structure contains two distinct functional groups: one tends to undergo chemical reactions with the surface of inorganic substances, while the other tends to undergo chemical reactions or form hydrogen bonds and be miscible with synthetic resins or other polymeric base materials. This unique molecular structure enables the coupling agent to act like a "molecular bridge", connecting the inorganic and organic worlds, improving the interfacial interaction between the two, enhancing the interfacial compatibility, and thereby significantly enhancing various properties of the bonding materials, such as physical and mechanical properties, electrical properties, thermal properties, optical properties, etc.

Coupling agentsare also widely used in the rubber industry. It can not only improve the wear resistance and aging resistance of tires, rubber plates, rubber hoses, rubber shoes and other products, but also reduce the cost by reducing the amount of rubber. In the adhesive material, the role of the coupling agent is that it can form an interface layer between the reinforcement material and the resin base, the interface layer can not only transfer stress, enhance the bonding strength between the two, but also prevent other media from penetrating, further improve the interface state, which is conducive to the aging resistance, stress resistance and electrical insulation properties of the produc.

Function overview of coupling agent

The coupling agent can significantly improve the interface bonding force between the resin and the reinforcing material, whether it is at the interface between the resin matrix and the reinforcing material, or in a variety of other application scenarios, it can promote or establish a strong bond. Coupling agents can be applied in a variety of ways, can be applied to the reinforcement material, can be added to the resin, or a combination of both. In different fields, coupling agents play different roles:

The coupling agent can significantly improve the interface bonding force between the resin and the reinforcing material, whether it is at the interface between the resin matrix and the reinforcing material, or in a variety of other application scenarios, it can promote or establish a strong bond. Coupling agents can be applied in a variety of ways, can be applied to the reinforcement material, can be added to the resin, or a combination of both. In different fields, coupling agents play different roles:

Adhesives and coatings: improve wet adhesion, weather resistance, improve pigment dispersion, enhance wear resistance and resin crosslinking.

Casting: Improve the strength of resin sand, to achieve high strength, low gas casting effect.

Glass fiber: enhance the wet physical and mechanical properties and electrical properties of composite materials, while improving the bunching, protection and processing technology of glass fiber.

Rubber: enhance the mechanical strength, wear resistance, wet electrical properties and rheology of products.

Textile: Make textiles softer and fuller, enhance water resistance and dye adhesion.

Sealant: enhance the wet adhesion, improve the dispersion of the filler, improve the wear resistance of the product.

Printing ink: Increase the wettability of adhesive force.

Filler surface treatment: In the resin to improve the compatibility of filler and resin, wettability, dispersion.

Cross-linked polyethylene: Used for cross-linked polyethylene cables and hot water pipes to enhance their strength, durability and service life.