Paint color deployment
Although the hue of the finished paint is varied, it still cannot meet the requirements of design and use in the construction of the decoration, and it is necessary to arrange the colors themselves. There are two basis for the deployment of colors: one is the color that is formulated according to the verbal or verbal requirements, which is more convenient and easier for oil workers. However, color selection is very important. If the color is not suitable, the effect of color matching will not be ideal. For example, in the deployment of green, any yellow and blue can be assigned to medium green, but only in the case of yellow and blue purity of the green light is more pure and bright. The other is to deploy according to the requirements of the model. The requirements are high and the technology is strong. It is not easily done by ordinary oil workers. Mainly rely on practical experience, and contrast with the color swatches, identify which kind of monochromatic color the excellent board is composed of, the proportion of each monochromatic ratio is roughly, and then use the same kind of paint for the test. After being approved by the design and construction unit, the same or similar painting method as the template is used to paint the same color as the template.
The method for preparing paint colors and precautions are as follows:
(1) Match sample. First determine the number of colors of the paint sample or sample containing the color paint, and then estimate the weight of the various paints to participate in color matching, as the basis for the deployment of large samples. A simple method of measuring the weight is to put two or more color paints for color matching into the container towel respectively, the gross weight of the light scale, the scale after the coloring is finished, and the scale-the second time, the difference between the two weighings, namely to obtain The weight of various color paints for color matching.
(2) For color matching, first add the main color paint (color paint with a large amount of use, which has little effect on coloring), and then use the color paint with strong coloring power as the secondary color to slowly and intermittently add the main color. Paint inside and stir constantly. Control the sample or sample, observe it at any time, read it out. Must be patiently deployed to adjust the color to meet the requirements. For example, to prepare a beige paint, one should pour the white paint into the container first, then slowly add the yellow paint, and continue stirring until the color meets the requirements. The deployment of sky blue paint, but also to adjust the white paint container, and gradually add the blue paint until satisfied.
(3) The color must be taken into account when the color paint is light when it is wet, and the color will turn deep after it is dried. Therefore, in the color matching process, the color of the wet paint is slightly lighter than that of the paint on the sample plate. It should be known in advance that the floating degree of a certain primary color in the complex paint and the change of the paint.
(4) When toning, care should be taken to add some auxiliary materials such as catalysts, curing agents, varnish, thinners, etc. If it is in winter, when the temperature is low and the driers need to be added, the driers should be added before the deployment starts, otherwise the hue will be affected.
(5) Colors often have different colors. If they are green, they should generally use yellow with green heads and blue with yellow heads. When using red, blue with red heads and red with blue heads should be used. That is to say, it is not possible to use simple blue and red colors. It is necessary to use blue with a trace of red and a red pigment with a trace of blue.
(6) When color matching, add different components of white to dilute the original color or complex color, and obtain different shades of color, such as light blue, light blue, sky blue, medium blue, dark blue and so on. By adding different amounts of black, different colors with different brightness can be obtained, such as gray, brown, brown, grass green, and the like.
The color mixing ratio of commonly used paints is shown in Table 5-1.
3 mix color paste color mix ratio
The proportion of pigment paste is shown in Table 5-2.
4. Preparation of coating consistency
Due to storage or climatic reasons, resulting in a thick coating, an appropriate amount of thinner should be incorporated into the coating to reduce its consistency to the construction requirements. The amount of diluent should not exceed 20% of the weight of the coating. Exceeding this will reduce the film performance. Thinners must be used in conjunction with paints and must not be abused to avoid quality accidents. For example, shellac must be made of ethanol, while nitrocellulose should be made of banana water.
5, the preparation of colorants
The formulation of colorants for use on wood is primarily the blending of water, wine and oil colors.
There are the following tips in the process of coloring
(1) Care must be taken when coloring, generally first try a sample, initially obtain the quantity of the color coating, and then
According to the results of the sample and then prepare a large sample. First adjust the secondary and secondary colors in a small container.
(2) First, add the main color (a color with a large amount of color and a small coloring power), and then add a dark color
(or color) Add slowly and intermittently, constantly observing color changes.
(3) "From shallow to deep", especially when adding pigments with strong coloring, avoid excessive amounts.
(4) At the time of color matching, there will be slight differences in the color of the coating and the dried coating film. Various paint colors
The wet film is generally shallow, and when the paint dries, the color deepens. Therefore, if the sample is a dry model, the color paint
After drying, perform color measurement comparison; if the sample is a wet sample, drop the sample in the color paint.
Check if the two colors are the same.
(5) The degree of floating of the primary colors in the complex paint and the change of the paint should be known in advance, especially the amino
Coatings and vinyl chloride coatings need more attention.
(6) In the deployment of multicolor coatings, coatings of the same nature should be selected for mutual deployment. The solvent system should also be miscible.
Otherwise, due to the poor miscibility of the coating, it will affect the quality, even the phenomenon of stratification, precipitation or gelation.
use.
(7) As the color often comes with a variety of different color heads, the yellow head with green head is generally used
Yellow with yellow head; with purple, blue with red head and red with blue head; with orange, yellow head should be used
Red and yellow with red head.
(8) Pay attention to which auxiliary materials, such as driers and curing, to add in the process of color matching.
The color of the agent, thinner, etc., so as not to affect the color.
(9) In the case of gray, green and other complex paints, the pigment density, oil absorption due to the preparation of a variety of pigments
If the amount is different, it is likely that phenomena such as "floating" and "flowering" will occur. At this time, trace amounts of surfactants may be added as appropriate or
Leveling agent, anti-floating agent to solve. Add 0.1% silicone oil as usual to prevent and control various surface activities produced by foreign companies
Sex agents need to be classified in what solvent system, and the amount added is generally 0.1% to 1%.
(10) Use of the transparent paint film features, the use of a suitable background can make the paint color than the original paint
The color is more vivid, which is based on the principle of reflection and absorption of natural light.
Color, paint engineering called "through the color." If the yellow primer can make the red more vivid, the gray primer makes the red more red,
The blue primer makes the black even darker and the aqua blue primer makes the white cleaner and clearer. Cream, pink, ivory
Color, sky blue, white primer, etc.
GB color card formula paint color standard sample card
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