Pigment is a kind of coloured powder granule, which is insoluble in water, and can be dispersed in various mediums such as oil, solvent and resin. It has the covering power, the coloring power, the light is relatively stable, often uses in the preparation coating, the ink, as well as the coloring plastic and the rubber, therefore may also be called the coloring agent.
Pigment is a fine granular matter, insoluble in its dispersed medium, and the physical and chemical properties of pigments are basically not changed by dispersing medium. Pigment Such a definition applies not only to coloring pigments, but also to body pigments and multifunctional pigments.
Pigment is one of the indispensable components in the production of paints. Its function is not only color and adornment sex. The more important role is to improve the physical and chemical properties of coatings, improve the mechanical strength of the film, adhesion, anti-corrosion properties, light resistance and weathering resistance, and special pigments can also be given to the coating to special properties.
Pigment is a kind of colored material with adornment and protective function, it is not soluble in water, oil, resin and other media is usually used in the dispersion of paint, ink, plastics, rubber, textile, paper, enamel and building materials, such as products, play the role of covering and giving color, Pigment but also increase the strength, increase adhesion, Special functions. There are many kinds of pigments, so far no unified classification methods, usually according to production methods, composition, function, structure and color classification. Pigments are divided into natural pigments and synthetic pigments according to their methods of production. Natural pigments, such as cinnabar, laterite, Realgar, Patina, Garcinia, indigo, etc. synthetic pigments such as: titanium dioxide, Pigment zinc barium white, lead chrome yellow, iron blue, red irons, Hung Dan, scarlet Powder, phthalocyanine and so on. Pigments can be divided into inorganic pigments and organic pigments according to their composition. The above-mentioned titanium dioxide, zinc barium white, lead chrome yellow, iron blue, red metal, Reddish dan, such as inorganic pigments; big pink, phthalocyanine, etc. as organic pigments. Pigments according to their function can be divided into coloring pigments, anti-rust pigments, physical pigments and special pigments, the function of coloring pigments is to give products the required color and cover power; antirust pigments are to prevent metal rust, play a protective role; physical pigments have a lower cover and tinting power, and the price is cheap, it can not only reduce costs, It is more important to increase the mechanical strength, durability, abrasion resistance, water resistance and stability of the products. Pigments are classified according to their chemical structure, such as organic pigments can be divided into azo pigments, phthalocyanine pigments, polycyclic pigments, etc. inorganic pigments can be divided into iron pigments, chromium smoking, lead pigments, zinc pigment, metal pigments, phosphate pigments, molybdate pigments, boric acid salt pigments and so on. Pigments are classified according to their color, Pigment such as white pigments, black pigments, yellow pigments, red pigments, green pigments, blue pigments, etc.