Which type of aluminum silver paste is suitable for the automotive industry? What are its advantages?

With the increased scrutiny on environmental protection in the automotive industry and the rising environmental requirements, most applications tend to use water-based automotive paints. As an environmentally friendly metallic pigment, it not only has a bright white appearance but also offers high cost-performance. Today, we will discuss the application and advantages of water-based aluminum silver paste in water-based automotive paints.

The coating process for water-based aluminum silver paste mainly includes two types: passivation and inorganic silicon coating. Passivation: This involves phosphate ester passivation with a relatively thin coating layer. Once made into the finished paint, it is not suitable for long-term storage. The product has a bright white appearance, a strong metallic effect, good floatability, and excellent hiding power. It can withstand adverse weather conditions and has a high cost-performance. Main uses: The product is widely used in self-drying and baking-type spray and dip coatings. It is suitable for steel structure coatings with relatively rough surfaces, such as bolts, angle iron, and plates.

Inorganic silicon coating: It offers better compactness and storage resistance. Finished paints made with this coating can generally be stored for 6-12 months. They feature a strong metallic effect, good hiding power, ease of dispersion, and good stability.

At the same time, there are two points to note when producing water-based paints:

1. It is necessary to use a resin system corresponding to the water-based aluminum silver paste, and the resin's acid value should not be too high.

2. During the dispersion of aluminum silver paste, low-speed mixing should be used. High-speed dispersion can bend and deform the aluminum flakes due to excessive shear force.

Water-based aluminum silver paste is an important component of water-based paints, as it integrates well with water-soluble solvents, meeting environmental requirements. It can also reduce the average heat consumption during the baking process by more than 40%, significantly lowering energy consumption during production. Water-based paints also offer advantages such as good surface leveling without ripples, bright color, strong surface hardness, scratch resistance, and weather resistance.