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

1. Used in glass fiber industry.

The surface treatment and improvement of glass fiber can improve the bonding performance of glass fiber and resin, and greatly improve the strength, electrical, water, climate and other properties of glass fiber. Even in a humid environment, it can significantly improve the mechanical properties of composite materials. At present, silane coupling agents have been widely used in glass fibers, and silane coupling agents account for about 50% of their total consumption. Among them, vinyl silane, amino silane, methacryloxy silane, etc. are used more.

2. Used in the plastics and composite materials industry.

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

3. Used in glue industry (silica gel, epoxy glue, sealant), sealant, adhesive and other industries.

It can improve its bonding strength, water resistance, weather resistance and other properties. Silicon coupling agents can often solve the problem that certain materials cannot be bonded for a long time. The principle of action of silicone coupling agent as a tackifier is that it has two groups. A strong chemical bond is formed on the junction interface, which greatly improves the bonding strength. There are generally three methods for the application of silicon coupling agents: one is as a surface treatment agent for framework materials; the other is as a binder, and the other is directly added to polymer materials. The first two methods are good to give full play to their efficiency and reduce costs.

4. Used in the foundry industry.

It can improve the surface properties of organic and inorganic materials and enhance the adhesion between fillers and resins. Especially when it is mixed with furan resin and used in the foundry industry, its molding sand strength and resin storage period are significantly improved.

5. Used in the coating industry.

Enhance the adhesion of air-drying coatings to difficult-to-attach substrates (especially fatty systems such as epoxy, alkyd, polyurethane, acrylic), and greatly improve its water resistance and salt spray resistance; in epoxy heavy-duty anticorrosion systems, it can Greatly improve its resistance to harsh environmental conditions, enhance the hydrophobicity of the paint film, and improve the corrosion resistance of the coating.

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