What does titanium dioxide do in paint?
1. Improve the covering power of paint
An appropriate amount of titanium dioxide can improve the covering power of paint, so that the coating is opaque on an object. Titanium dioxide has a larger refractive index than air and most organic substances. It can effectively block light to shield organic substances and ensure the covering effect.
2. Improve the gloss of paint
Titanium dioxide can make the coating surface reflect light repeatedly, leading to a high gloss and making the coating surface smooth and delicate. This is because titanium dioxide has a large refractive index and high reflectivity. It enhances the light reflection of the coating surface.
3. Improve the corrosion resistance of paint
Titanium dioxide has excellent corrosion resistance. It can absorb harmful gases (e.g. SO2 and NOx) in the air, to form a stable titanate layer and thus prevent corrosion to some extent. Titanium dioxide can also absorb ultraviolet light, to reduce the ageing rate of organic material in the coating.
4. Improve the weather resistance of paint
An appropriate amount of titanium dioxide can enhance the weather resistance of the coating. It can reduce the peeling, yellowing and discoloration of the coating, and extend the service life of the coating.
These are the functions of titanium dioxide in paint. An appropriate amount of titanium dioxide in paint can make the coating color gorgeous. It can improve the covering power and gloss of the coating. It can also make the coating resistant to corrosion, ultraviolet light, etc
Is titanium dioxide powder safe in paint, Is it hazardous?
Currently, toxicological data have demonstrated that titanium dioxide itself is not harmful to human health. In some physical forms, lung overload effects are observed in studies. They are caused by the physical properties of poorly soluble low-toxicity (PSLT) respiratory dust within a large range.
International research institutions have also pointed out that if titanium dioxide is enclosed in a substrate, such as paint, its exposure to humans is not significant.
Does all white paint contain titanium dioxide?
White pigments are mainly titanium dioxide, composite titanium dioxide, lithopone (zinc barium white), zinc oxide (zinc white), lead white, antimony white, alkaline lead sulfate, etc. titanium dioxide, composite titanium dioxide, lithopone (zinc barium white) and zinc oxide (zinc white) are often used in paints. Others are rarely used.
What are the benefits of titanium dioxide used in paint?
1. High catalytic activity, antibacterial, self-cleaning, antifouling and deodorizing
2. Strong redox ability, degrading organic matters in sewage into non-toxic substances. Environmentally friendly!
3. Self-cleaning, easy to clean, antibacterial, deodorizing, antifouling, anti-fogging, etc.
Which industries are titanium dioxide paint used in?
Titanium dioxide paint is widely used in buildings, automobiles, ships, furniture, household appliances, coils, toys and daily necessities. In the paint industry, architectural coatings consume the most titanium dioxide, followed by coatings of automobiles, ships, railway vehicles, and furniture. Because rutile titanium dioxide is better than anatase titanium dioxide, it is used in outdoor coatings with high weather resistance, such as coatings of ships, bridges, automobiles and buildings. At present, a lot of rutile titanium dioxide are used in paints. With the development of the automotive industry and the construction industry, more titanium dioxide will be needed for coatings. In addition, there will be higher requirements for the variety and quality.
Pigment for Paint Uses
