Generally, the added amount of dispersant accounts for about 2% to 5% in the total formula. If the double ladder test is added according to the situation, what is the amount of water-based dispersant used? Today, the editor of the dispersant manufacturer will analyze with you what the usage of this water-based dispersant is related to to determine the factors of usage.

1. It is related to the purpose of the coating: considering the cost issue, the use of water-based dispersants in general architectural coatings is relatively low, and the use of higher amounts in automotive coatings is required to obtain better performance. Of course, there are also other fields. field of.

2. It is related to the type and chemical properties of the substrate. The wetting and dispersing effects of resins in coatings are different, which affects the use of water-based dispersants.

3. It is related to the chemical properties of water-based dispersants: due to the relative molecular weight and chemical structure, the addition amount of low molecular weight additives is lower than that of high molecular weight additives.

4. It is related to the particle size of the pigment: transparent titanium dioxide needs about 5 to 8 times more water-based dispersant than ordinary titanium dioxide.

Therefore, the larger the surface area, the smaller the degree of dispersion, and the more dispersant should be added. There are many ways to measure the added amount. Any method must be tested in practice, and the dispersion stability of the coating and the effect of adding a dispersant are measured by heating storage or storage at room temperature.