The position of Coating in the consumption of inorganic pigments

Body paint coatings industry is a big user,the amount after the paper industry.In the coating,not only has the filling effect pigment,but also have an impact on the stability of the coating dispersion,rheology and film gloss,durability,and other functions.With the paint preparation process refinement and premium paint products is increasing,particularly promising coatings industry fine pigment,the amount has been rising.The so-called fine pigment,fine processing by means and/or chemical pretreatment (ie,surface coating treatment) of deep processing of pigment,it can improve the performance and use of paint coating application performance,in many formulations available saving and substitution of titanium dioxide and color pigments like the expensive pigments,extender pigments used for the latter,sometimes called pigment extenders.

Pigments so far not a precise definition,published in the U.S. "PigmentHandbook" (1987 edition of) the pigment is defined as:not to be dissolved by the dispersion medium,the media basically does not occur with such physical and chemical reactions,and its particle size range from very fine colloidal particles to relatively coarse particulate material particles.General For convenience,the paint pigment into inorganic pigments,organic pigments and extenders.Metal powder pigments are generally regarded as inorganic pigments.Organic-Inorganic Pigments consumes too young,generally constitute a category.Traditional extender pigments are mostly inorganic mineral,it sometimes can be classified as inorganic pigments.

Inorganic pigments are applied coatings industry the largest,most widespread application of pigments,mainly used for covering,coloring,protection,anti-corrosion,etc.,are also used to produce a variety of special features,the paint industry around the world consume 50% of the inorganic pigment production above,the inorganic pigments can be divided into the white cover type pigment,a coloring pigment,a metallic pigment,anti-rust pigment.

Iron oxide pigment because of its rich colors,cheap,widely used in the paint.Currently used in coatings of the whole iron oxide pigments total consumption more than 25% iron oxide pigment consumption is one of the main directions,with the increasing development of the coatings industry,paint consumption in the proportion of iron oxide pigments will increasingly greater.

Organic pigments due to their cost,in coating applications is relatively small,with worldwide speaking,the amount of inorganic pigment production only 20 to 25%. But in recent years,the number of organic pigments for paints rapid growth.The reason,in addition to a high decorative coatings (especially automotive coatings) used some bright color,strong coloring organic color pigments and inorganic pigments with the application,in order to improve the coating's color,the more important reason is because environmental regulations and industrial health regulations increasingly strengthened,with organic pigments and titanium dioxide pigment and/or miscible with the metal oxide pigment (especially a class of nickel titanium yellow rutile mixed phase pigments) Blending to replace toxic inorganic chromic acid lead pigments and cadmium pigments,has become a global trend.Organic pigments in coatings importance has become increasingly evident.

Nevertheless,at present,an inorganic pigment or paint the industrial applications of the largest,most widespread application of pigments,inorganic pigments are a large part is used in coatings,paint consumption in the position of inorganic pigments unparalleled.

By Betty