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Latex coating color matching principle
architectural coating color matching is an important part of coating production technology, color matching technology requirements experienced. How to make a specified color card paint color in a short period of time, can be said to be a very technical work, color matching technology is the production of color coatings other than white paint an indispensable important process, it directly affects the quality of paint production, sales and construction performance.
1, the three elements of
color, the color of the color, brightness, color is the standard scale of color analysis
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1.1 is the appearance of different colors. The most basic representative colors of hue are five, namely red, yellow, blue, green, purple. The psychological reflection of the color is characterized by warm or cold colors.
1.2 lightness is the degree of light and darkness of each color the eye feels. Different lightness produces different emotional effects, high clarity will give people a pleasant, high-quality feeling, low brightness gives people a simple, rich, low feeling.
1.3 color refers to the brightness of each color, i.e. purity and saturation.
2, color provisioning,
color classification can be found in Table 1. When you color, two primary colors are stitched together into one intercolor (secondary color) and the corresponding color is the complement color. The addition of tweens to the intercolor (secondary color) darkens the color and even turns gray or black. The relationship between color palette and its complement can be found in Table 2.
classification of table 1 color tones
The relationship between Table 2 tonal and its complementing
Note: The slurry being used in the market is almost non-tricolor, most of which are intercolor.
example: yellow is red and green.
3, color commonly used pigments and their effects
pigment is a fine powdered colored substance, he is not soluble in water or oil medium, but can be evenly dispersed medium, applied to the surface of the object to form a color layer to show a certain color. Coloring pigments can be divided into inorganic pigments and organic pigments.
you choose a pigment to color, pay attention to the following:
. 1. When the exterior paint is colored, the exterior wall color must be used.
2. Two-tone colors fade faster than single-tone colors.
3. Bright colors fade faster than dim colors.
4. Try to use inorganic pigments and use less organic pigments.
5. yellow alkali to orange red, hydrogen sulfide to black.
latex coating color matching method
latex paint is mainly white and light color, dark paint usage is relatively small, and most of them are used in more special areas. Therefore, the general architectural paint production plant is mostly for the production of white paint and color with color palette of various colors of paint.
prepared with a white paint, the required color paste is added to the required tone of paint. Color paste can be self-made, can also be purchased, but pay attention to achieve a certain degree of fineness can be used, at least the same as the fineness of white pulp, because the addition of color paste no longer over-grinding and direct distribution of finished products. The tone of the final product is generally complex color, that is, to add at least two kinds of color paste, so it is very important to correctly grasp the color matching operation.
(1) color adjustment should be based on the principle of looking for shades first, and then looking for tones, carefully provisioning. Dark paste can not be added at once, but to leave a small part, with the addition, so as not to overdose.
(2) the paste should be added slowly under stirring conditions. After each addition of a color paste should be fully stirred evenly, at any time sampling and model comparison. However, it should be emphasized that half of the latex coating composition is water, dry film and wet film have a large color difference, generally dry film is lighter than wet film color. Therefore, when comparing colors, wet samples and wet samples, dry samples and dry samples, in order to ensure that the color of the paint and model consistent.
(3) because the solid content of the slurry is not the same, in storage is prone to the phenomenon of upper and lower thick. Therefore, before using the paste, the slurry should be fully stirred evenly, avoiding the same formula, different batches, to produce different tones.
(4) dosing and requires consistent color coatings, especially external latex coatings, preferably in a large mixing tank (e.g. 5.0t) at once, so as not to produce color differences. If you don't have the conditions to provision at once, you can provision multiple times first. Finally, the different batches are mixed in part and stirred well before they can be used to ensure uniform color of the coating.
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