The dosage and application of titanium dioxide in coatings

titanium dioxide physics has excellent optical, electrical and pigment application properties, so it has a wide range of use value. The
, chemical and optical properties of
titanium dioxide pigments are mainly determined by the original state before the pigment particle envelope and the chemical structure of the surface bread film. Below by Asahi Mei Plastics for you to explain the specific amount of titanium dioxide in the paint and its application

.
Titanium dioxide pigments are often silicon, aluminum, zirconium oxides as a surface treatment agent, precipitation on the surface of particles to form a coating, and its precipitation form, quantity and method of process control. Some also use organic treatments. The different surface treatment methods give the individual characteristics of titanium pigment to meet the different needs of coating formulation design.
addition,
titanium dioxide
for the purpose of covering force, the general magnetic paint 30-40 microns can cover it. The addition amount is 15-25% of the total formula, from the weather-resistant, high-gloss point of view in order to obtain high weather-resistant matte paint needs to be de-glossed, with the minimum amount of titanium dioxide added, do not add any other fillers as the principle, from a cost point of view Consider adding other system fillers to reduce costs, the addition of other system fillers will reduce the amount of titanium dioxide addition, but to balance the brightness problem;
in the issue of dispersion, primers or low-requirement finishes from the formulation cost point of view can not wet dispersant additives, but the floating hair flower phenomenon should be controlled within the acceptable range. The addition of controlled flocculation aids to primers and finishes can control the floating flowering phenomenon.
In high-grade paint, titanium white powder can be wetting dispersants with low molecular weight, other organic pigment slurry using high molecular weight wetting dispersion aids, the two are generally compatible; Select a suitable wetting dispersion aid, can solve the problem of floating hair flowers, if anti-corrosion primer, building latex paint and anti-corrosion paint, choose a good dispersion of titanium dioxide, in wetting dispersion aid to help directly use high-efficiency high-speed dispersion machine can achieve dispersion effect, saving the grinding process.
the amount of
titanium dioxide
added to different finishes and the variety of wetting dispersants are different, so the dosage needs to be added according to the production needs in order to achieve the best results for the use of the paint.