Chemical Agent Silica And Silicon Dioxide

How to choose Matting Agent under different performance standards?

In recent years, my country's coating industry has been booming, and the total output of coatings has also jumped to the

forefront of the world, forming a related industrial group, actively promoting the technological revolution and development

in the field of traditional coatings. During this period, high-gloss glossy coatings have been deeply loved by consumers for

their bright colors and brightness, and have dominated the coating market for a long time. 

Silicon dioxide matting powder

1. Ideal matting efficiency

1) Choose products with larger average particle size. The larger the average particle size of the matting agent, the higher the matting

efficiency. However, if the particles are too large, the surface of the paint film will be too rough, affecting the feel and appearance.

2) Choose products with higher porosity (pore volume). The larger the porosity, the higher the powder content per unit weight, and

the better the matting performance.

2. Ideal transparency

1) Choose products with smaller average particle size. Under the same addition amount in the formula, the smaller the average particle

size of the matting agent, the better the transparency of the paint film, but the corresponding matting efficiency will also decrease. It should

be pointed out that too high a fine powder content will have an adverse effect on transparency.

2) Surface treatment. Due to the different types of surface treatment of the matting agent, it will affect its wettability and dispersibility with the

base material, which will affect the transparency of the paint film. Therefore, it is necessary to adjust the matching between the matting agent

and the base material, and if necessary, it can be improved by adding a wettability and dispersibility modifier. At the same time, it is also necessary

to pay attention to whether there are other factors that cause the transparency of the paint film to decrease, such as modifiers with poor compatibility

or poor pigments.

3. Ideal smooth effect

1) Usually, the matting agent with organic treatment on the surface will feel better than that without treatment.

2) Particle size and particle size distribution. Generally speaking, the finer the particle size of the matting agent, the finer the feel in the paint film.

The narrower the particle size distribution, the fewer large particles, and the better the feel to a certain extent.

4. Ideal suspension

Usually, matting agents will stratify and precipitate to a certain extent as the storage time of the paint increases. Products with organic surface treatment

will have better anti-settling performance. Therefore, when designing the formula, we should consider how to avoid the precipitation of matting powder

and add appropriate anti-settling modifiers.

5. Ideal surface scratch resistance and wear resistance

The matting agent surface with organic treatment will improve the surface scratch resistance and wear resistance of the paint film to a certain extent.

Anticorrosion Pigments, Inkjet Receptive Coating, Matting Agent