Coating technology: selection principle of coloring pigment in coating

Core tip: according to the color presented, the pigments available for coating can be divided into nine basic colors, including red, orange, yellow, green, purple, blue, white, black and metallic luster Different wavelengths present different hues, and the same wavelength range has different sensitivity to hue change At the same time, the lightness of the color varies with the hue or the purity of the color Therefore, in the formulation design of colored coatings, the selection of pigments is very important, which should be adjusted according to the color code of various pigments In addition, the physical properties of the selected pigment, such as particle size, coloring power, covering power, suspension, optical rotation resistance and resistance, should also be considered 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 Paint Home News: according to the color of the paint, the available pigments can be divided into nine basic colors: red, orange, yellow, green, purple, blue, white, black, metallic luster, etc Different wavelengths present different hues, and the same wavelength range has different sensitivity to hue change At the same time, the lightness of the color varies with the hue or the purity of the color Therefore, in the formulation design of colored coatings, the selection of pigments is very important, which should be adjusted according to the color code of various pigments In addition, the physical properties of the selected pigment, such as particle size, coloring power, covering power, suspension, optical rotation resistance and heat resistance, should also be considered In the design of paint formulation, the color matching principles of pigments are as follows: (1) in the color matching of paint, the five basic colors of red, yellow, blue, white and black shall be selected as far as possible; (2) in the color matching of paint, the color pigments with similar performance shall be selected as far as possible to mix and match, so as to avoid the change of structure or composition when the paint is used, so as to make the color of paint different; (3) In the specific color matching, the color matching of the same color with different lightness shall be selected as far as possible, so as to form the paint color with primary and secondary, light and shade coordination; (4) in the color matching of the paint, the density difference between different color pigments shall not be too large; (5) In color matching, there should be no reaction between coloring pigments, for example, when the pigments containing lead, copper and mercury are mixed with sulfur-containing pigments, the color will darken; when the Lake Red C is mixed with chrome yellow, the red will fade easily; (6) In the color matching of the paint, if you want to improve the brightness of the color of the paint, you can add a small amount of dyes; if you want to improve the color purity of the paint, you can add a proper amount of white pigment with large covering power to cover up a small amount of miscellaneous colors in the paint; (7) in the same paint formula system, the variety of colored pigments should not be too many, so as not to bring in miscellaneous colors and make the paint dark 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,