Titanium dioxide, also known as titanium dioxide or TiO ₂, plays a core role in coatings, mainly reflected in improving coverage, enhancing weather resistance, and optimizing dispersibility. Its applications cover buildings, automobiles, industry, home appliances, etc., with specific manifestations as follows:
Covering power: The high refractive index (2.7) of titanium dioxide makes it a key source of covering power in coatings, effectively masking substrate colors and defects, and achieving uniform coverage even in thin coatings. Research has shown that when the particle size of titanium dioxide is 160-350 nanometers (approximately 0.4-0.5 times the wavelength of visible light), the scattering ability of light is the strongest and the covering effect is the best. If the film-forming material of the coating is insufficient, the titanium dioxide particles are prone to agglomeration, resulting in an increase in actual particle size and a decrease in coverage performance.
Weather resistance and durability: The chemical stability of titanium dioxide endows the coating with resistance to ultraviolet radiation, acid rain, and temperature changes, significantly extending the lifespan of the paint film. Rutile titanium dioxide is widely used in outdoor scenarios such as exterior wall coatings and automotive topcoats due to its superior weather resistance, while anatase titanium dioxide is more commonly used in indoor coatings. Imported titanium dioxide is particularly outstanding in high-end coatings, as it can resist extreme environmental erosion and maintain stable coating color.
Dispersion requirement: Titanium dioxide should be evenly dispersed in the coating base material to avoid agglomeration that may cause uneven gloss or decreased mechanical strength. Water based coatings require higher dispersibility, and surface treatment techniques are needed to optimize the compatibility between titanium dioxide and water-based systems.
Application scenarios:
Architectural coatings: Titanium dioxide provides weather resistance in exterior wall coatings, enhances whiteness and coverage in interior wall coatings, and meets the demand for water-based and high solidification in environmental protection trends;
Automotive Coatings: Enhance the glossiness and UV resistance of the body coating, prevent fading, and extend the lifespan of the paint surface;
Industrial coatings: used for metal anti-corrosion coating, resist corrosion in harsh environments such as chemical and marine, and reduce equipment maintenance costs;
Household appliances and wood coatings: improve the anti fouling performance of household appliances and the anti-aging performance of wood products, giving consideration to beauty and durability.
Environmental protection trend: With the tightening of environmental regulations, titanium dioxide needs to adapt to the development direction of low VOC and non-toxic coatings. At the same time, water-based coatings have higher requirements for particle size control and surface treatment technology of titanium dioxide. Bontecn Group China titanium dioxide fully meets your needs for the performance of titanium dioxide. Welcome to inquire.
Post time: May-06-2025
