Regardless of solvent-based or water-based paint, if titanium dioxide is used, its role is not only to cover and decorate, but more importantly, to improve the physical and chemical properties of the paint, enhance chemical stability, and improve hiding power, color reduction, and corrosion resistance. , light resistance, weather resistance, enhance the mechanical strength and adhesion of the paint film, prevent cracks, prevent the penetration of ultraviolet rays and moisture, thereby delaying aging and prolonging the life of the paint film. At the same time, it can also save materials and increase varieties.

1. The effect of particle size of titanium dioxide on the hiding power of paint

The shape and size of titanium dioxide particles are different, and the degree of scattering of light is very different, which is the key factor affecting the hiding power of titanium dioxide. Studies have shown that under the same conditions, when the particle size of titanium dioxide is 160-350nm, that is, when the particle size is about 0.4-0.5 times the wavelength of visible light, it has a strong ability to scatter light, which will directly affect the coating in the application. covering power.

In the coating system, if the film-forming substance is not enough to completely cover the titanium dioxide particles, the titanium dioxide particles will contact and agglomerate, which is equivalent to the increase in the particle size of the titanium dioxide to a certain extent, and the covering power of the coating will increase. decline.

2. The influence of the dispersibility of titanium dioxide on the hiding power of coatings

  In the field of coatings, the degree of dispersion of powder particles determines the performance of the product to a large extent. During the production of coatings, the dispersion of titanium dioxide must go through the processes of wetting, sanding and dispersion.

  The stable suspension state of titanium dioxide in the coating will improve the hiding power of the coating. However, due to the certain activity of titanium dioxide, the system environment used will have a certain impact on its dispersion, and it is prone to poor dispersion states such as flocculation, precipitation, and suspension. Therefore, The degree of dispersion also affects the hiding power of the paint.

3. The effect of the amount of dispersant on the hiding power of the paint

When titanium dioxide is dispersed, its particles tend to agglomerate because its particles are relatively small compared to fillers. Therefore, the choice and amount of dispersant will affect the dispersibility of titanium dioxide, and at the same time affect the hiding power of the paint film. Experiments have shown that the degree of dispersion of pigments and fillers increases with the increase in the amount of dispersant, and the increase in dispersibility reduces the distribution range of particle sizes of pigments and fillers, and the particle size becomes smaller, thereby improving the hiding power of the paint film.

4. The sustainable development path of titanium dioxide for coatings

As an efficient light-scattering pigment, titanium dioxide provides excellent whiteness and hiding power for the coating film. With the rapid rise of the automobile industry, construction industry and water-based paint market, the overall demand for titanium dioxide is also increasing rapidly.

5. Application of titanium dioxide

Titanium dioxide is widely used in coatings, plastics, rubber, ink, paper, chemical fiber, ceramics, daily chemicals, medicine, food and other industries.

To purchase Titanium Dioxide, please contact reputable suppliers such as Wuxi Chti New Materials Co., LTD. We can help you find the correct grade and form of titanium dioxide for your needs, with competitively priced options.