Pigment is a kind of colored material with adornment and protection function, it is insoluble in water, oil, resin and other media are usually used in the dispersion of paint, ink, plastics, rubber, textile, paper, enamel and building materials, such as products, play a role in covering and giving color, but also increase the strength, increase adhesion, special functions and so on.
There are many kinds of pigments, Pigment 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. Pigment synthetic pigments such as: titanium dioxide, 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 its function can be divided into coloring pigments, anti-rust pigments, physical pigments and special pigments, coloring pigments are mainly to give products the required color and cover; anti-rust pigment is to prevent metal rust, play a protective role; the constitution pigment has the lower covering power and the coloring power, and the price is cheap, its addition can not only reduce the cost, but also more importantly can 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, such as white pigments, black pigments, yellow pigments, red pigments, green pigments, blue pigments, etc.