Common knowledge of coatings: identification and classification of organic pigments

Core tip: the pigment made from colored organic compounds is called organopigment It refers to a kind of pigment made of organic compounds with color and a series of other pigment characteristics The characteristics of pigment include light resistance, water resistance, acid resistance, alkali resistance, organic solvent resistance, heat resistance, crystal stability, dispersion and covering power The difference between organic pigment and dyestuff is that it has no affinity with the colored object Only through adhesive or film-forming material, the organic pigment can be attached to the surface of the object or mixed in the interior of the object to make the object colored The intermediate and production equipment needed for its production Paint knowledge | precautions for wall paint color selection Recommended introduction: when painting the wall, the owner sometimes has difficulty in choosing what color of the wall paint to paint In fact, there is no ugly color in the wall paint, only the disharmonious color matching The use of wall color contains the knowledge of health Too strong color will stimulate people's perception, make people have a sense of fidgety, affect people's mental health Grasp the basic principles of wall color and paint a colorful space 1、 Wall paint color selection notice 1 Light color is generally used for the top surface Light colors make people feel light, dark colors make people feel heavy Usually, the treatment of rooms is from top to bottom, from shallow to deep For example, the ceiling and walls of rooms are white and Home of coatings: the pigments made from colored organic compounds are called organopigment It refers to a kind of pigment made of organic compounds with color and a series of other pigment characteristics The characteristics of pigment include light resistance, water resistance, acid resistance, alkali resistance, organic solvent resistance, heat resistance, crystal stability, dispersion and covering power The difference between organic pigment and dyestuff is that it has no affinity with the colored object Only through adhesive or film-forming material, the organic pigment can be attached to the surface of the object or mixed in the interior of the object to make the object colored The intermediates, production equipment and synthesis process needed in the production are similar to the production of dyes, so organic pigments are often organized in the dye industry Compared with General inorganic pigments, organic pigments usually have higher coloring power, particles are easy to grind and disperse, not easy to precipitate, and the color is also bright, but the performance of light, heat and weather resistance is poor Organic pigments are widely used for coloring ink, paint, rubber products, plastic products, stationery and construction materials According to the structure classification: (1) azo pigments account for 59% (2) phthalocyanine pigments account for 24% (3) triarylmethane pigments account for 8% (4) special pigments account for 6% (5) polycyclic pigments account for 3% (organic pigments) have bright colors and strong coloring power; they have small density and are non-toxic, but the light, heat, solubilizer and migration resistance of some varieties are often inferior to those of inorganic pigments The variety of colors is endless and colorful, but there is a certain internal relationship between various colors Each color can be determined by three parameters, namely hue, lightness and saturation Hue is the feature that colors are different from each other It depends on the color composition of the light source and the feeling of each wavelength emitted by the surface of the object to the human eye It can distinguish red, yellow, green, blue, purple and other features Lightness, also known as brightness, is the characteristic value that represents the change of light and shade on the surface of an object By comparing the lightness of various colors, the colors can be divided into light and dark Saturation, also known as chromaticity, is the characteristic value of the color of the surface of the object, which makes the color bright and dark Hue, lightness and saturation make up a solid Using these three scales, we can measure color with numbers The colors in nature vary greatly, but the most basic ones are red, yellow, blue, which are called primary colors Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,