Silane coupling agents have a wide range of applications. Today, we will briefly introduce the application in automobiles.

Ⅰ. Three applications of silane coupling agents

1. Surface treatment of silane coupling agents

It can improve the bonding performance of glass fiber and resin, increase the glass fiber, and enhance the strength, electrical, water resistance, weather resistance and other properties of 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 and so on.

2. Silane coupling agents are used to fill plastics

The filler can be surface treated in advance, or directly added to the resin, which can improve the dispersibility and adhesion of the filler in the resin, improve the compatibility between the inorganic filler and the resin, improve the process performance and increase the filled plastic The mechanical, electrical and weather resistance performance of the product.

3. Silane coupling agents are used as a tackifier for sealing, bonding and coating

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 and greatly improving the bonding strength.

Ⅱ. The applications of organosilane coupling agents in the automotive industry

1. Automotive coatings

Silane-enhanced high-performance coatings can make car topcoats able to withstand the harshest environment, unique weathering, chemical and UV resistance, and can prevent corrosion. The coating can be close to the metal surface, so that it is not exposed to the sun, ice, snow, salt, gasoline, oil, acid rain and other chemicals.

2. Car windshield and roof

The windshield of a car almost all new cars use silicone sealant to seal and fix the windshield and car windows.

3. Airbag

The silicone coating can ensure that the driver and passengers of the car can withstand inflation/deflation, making it more reliable, and maintaining airtightness and heat resistance in the inflated state.

4. Automotive electronics

The organosilane coupling agents can isolate and protect the extremely sensitive electronic and electrical connections of the circuit to prevent moisture and corrosion.

5. Car foam isolation

The foam made by organosilane coupling agents inside the vehicle can achieve good sound insulation, heat insulation, flame retardancy, and reduce the formation of harmful combustion gases.