Analysis of the application of titanium dioxide in ink

Titanium dioxide, the scientific name is titanium dioxide, as a kind of high quality white pigment and additive, titanium dioxide has excellent performance characteristics, such as high hiding power, excellent dispersion, excellent light resistance, heat resistance, alkali resistance, weather resistance is widely used in coatings, plastics, printing ink, paper, cosmetics and other fields. Its main component, titanium dioxide, has two crystal structures: anatase and rutile.

Because of its high hiding power and whiteness, titanium dioxide is used as a white pigment in industry, giving products excellent hiding power and color. It has stable chemical properties, good weather and heat resistance, and can withstand various climate and temperature changes. These characteristics make titanium dioxide in ink formulations occupy an irreplaceable position.

Application Characteristic

Improve the whiteness and hiding power of ink

Titanium dioxide because of its high refractive index and good light scattering performance, can make the ink fully reflect light in the light, showing bright white color. In the need for high whiteness of print, such as newspapers, magazines, titanium dioxide can significantly improve the visual effect and aesthetic. In addition, its strong hiding power can also effectively cover the paper background color, so that the printing pattern is clearer.

Enhance the wear resistance and weather resistance of ink

Titanium dioxide has high hardness, good chemical and thermal stability, which makes the ink added titanium dioxide perform well in wear and weather resistance. In the field of outdoor advertising, signage, packaging and printing, ink often needs to withstand the wind, rain, sun and rain and other harsh environments, and the addition of titanium dioxide can significantly improve the weather resistance of ink, effectively reduce the color fading and wear caused by light, humidity, temperature and other factors.

Improve the drying and adhesion of ink

Titanium dioxide has a large surface area and strong surface activity, which makes it in the ink can play a certain role in drying promotion and adhesion enhancement. In the printing process, titanium dioxide can interact with connectors, additives and other components to promote the rapid drying of ink and improve printing efficiency. At the same time, titanium dioxide can also be closely combined with the surface of the paper, improve the adhesion of the ink on the paper, and prevent the ink from falling off or cracking.

Adjust the gloss and rheology of the ink

The coloring power of titanium dioxide mainly depends on its ability to scatter visible light, which is directly related to the coloring power of ink. The larger the scattering coefficient, the stronger the coloring force of titanium dioxide. In addition, the refractive index of titanium dioxide is also an important factor in determining its coloring force, the higher the refractive index, the stronger the coloring force. In the white pigment, the refractive index of titanium dioxide is in the leading position, and the refractive index of rutile titanium dioxide is higher than that of anatase type. Therefore, in order to ensure the best coloring effect, titanium dioxide with strong scattering ability and high refractive index should be preferred.

By fine-tuning the particle size and the amount of titanium dioxide added, we can achieve effective control of ink gloss, from matte to highlight and other diverse effects. Not only that, the addition of titanium dioxide also has a positive impact on the rheology of the ink, which can improve the stability and printing adaptability of the ink to a certain extent.

Formula for Application

Paper ink

Titanium dioxide is the main white pigment in paper ink, which can greatly improve the whiteness and gloss of printed matter. By adjusting the amount of titanium dioxide and particle size distribution, the rheological properties and printing suitability of the ink can be optimized.

Formula example: With 50% titanium dioxide, 25% pigment, 15% resin, 10% additive ratio for blending, can obtain good printing suitability and high gloss.

Plastic Inks

In plastic ink, titanium dioxide can give prints high hiding power, effectively covering the substrate color. At the same time, it can also improve the adhesion of ink and plastic surface. This recipe case is suitable for plastic film printing with excellent adhesion and friction resistance.

Formula example: The proportion of 40% titanium dioxide, 30% pigment, 20% resin, 10% additive is mixed, which can make the printed matter have high hiding power and strong adhesion with the plastic surface. In addition, by adding plasticizers, the wettability and adhesion of the ink to the plastic film can be further enhanced, thereby improving the printing effect and quality.

Metal printing ink

In metal ink, titanium dioxide can enhance the adhesion of ink to metal surface and improve the corrosion resistance and weather resistance of printed matter.

Formula example: The proportion of 60% titanium dioxide, 20% pigment, 15% resin, 5% additive is mixed, which can improve the corrosion resistance and weather resistance of printed matter.

Please note that the above recipe examples are for reference only and need to be adjusted according to the actual needs of the specific application.