As we all know, the coupling agent is an important treatment agent with an increasingly wide range of applications, mainly used as an auxiliary agent for polymer composite materials.

Heshan KBORON New Material Co., Ltd. is a South Korean MST Chinese joint venture company that specializes in silane coupling agents and other products. With stable product quality, fast delivery and price advantages, it stands out in the fiercely competitive market and develops steadily. Let us understand the common sense and scope of application of coupling agents.

The characteristic of the molecular structure of the coupling agent is that the molecule contains two groups with different chemical properties. Resins or other polymers undergo chemical reactions or generate hydrogen bonds to dissolve them. Therefore, coupling agents are called "molecular bridges" to improve the interface between inorganics and organics, thereby greatly improving the properties of composite materials, such as physical properties, electrical properties, thermal properties, and optical properties.

The coupling agent was originally used as a surface treatment agent for glass fibers in glass fiber reinforced plastics, and later used in rubber, plastics, coatings, inks, adhesives, wires and cables, resin sand casting, abrasives, glass steel, artificial quartz stone, It is widely used in textiles and has excellent performance in silane treatment liquids in recent years.

There are many types of coupling agents, mainly including silane coupling agent, titanate coupling agent, aluminate coupling agent, bimetal coupling agent, phosphate coupling agent, borate coupling agent, chromium complex Coupling agents for foods and other fatty acids, alcohols, esters, etc. In recent years, there have also been rare earth coupling agents and composite coupling agents.

The application of silane coupling agent can be roughly summarized into three aspects:

 One: Surface treatment

It can improve the bonding performance of glass fiber and resin, greatly improve the strength, electrical, water resistance, weather resistance and other properties of glass fiber reinforced composite materials. Even in the wet state, it can improve the mechanical properties of composite materials, and the effect is very significant. . The use of silane coupling agents in glass fibers has been quite common. The silane coupling agents used in this area account for about 50% of the total consumption. Among them, the more used varieties are vinyl silane, amino silane, and methyl. Acryloyloxysilane, etc.

 Two: filled plastic

The filler can be surface treated in advance, or directly added to the resin. It can improve the dispersion and adhesion of the filler in the resin, improve the compatibility between the inorganic filler and the resin, improve the process performance and improve the mechanical, electrical and weather resistance properties of the filled plastic (including rubber).

 Three: used as a sealant, adhesive and coating tackifier

It can improve their bonding strength, water resistance, weather resistance and other properties. Silane coupling agents can often solve the problem that certain materials cannot be bonded for a long time. The principle of action of silane coupling agent as a tackifier is that it has two groups; one group can be combined with the frame material to be adhered; and the other group can be combined with polymer materials or adhesives , Thereby forming a stronger chemical bond at the bonding interface, greatly improving the bonding strength. There are generally three methods for the application of silane coupling agents: one is as a surface treatment agent for the framework material; the other is to add it to the adhesive, and the third is to add it directly to the polymer material. From the perspective of giving full play to its effectiveness and reducing costs, the first two methods are better.

 At present, silane coupling agents and titanate coupling agents are widely used. In the rubber industry, silane, titanate and aluminate coupling agents are commonly used. Silane coupling agent is a coupling agent that has been studied and applied earlier.

 Having introduced so much, I believe that everyone has a certain understanding of silane coupling agent. If you want to know more about and cooperation matters, please contact Heshan Jinrunna New Material Co., Ltd.

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