How to adjust the color of the paint? Look at this is enough!

The color rendering of the coating film is subtractive color, which is much more complex than the addition of color, and the pigment used in color matching is not limited to the three primary colors

The method of color grading

Determination of the reference

Before color matching, you should carefully study the color card or the specified color sample card or the provided paint sample, figure out the hue range of the color, what color the main color is, what color the secondary color is, what color needs to be used, and preliminarily formulate the approximate amount

Colorant inspection

Before color matching, the fineness of the color paste for color palette should be tested, and it can only be used for color grading when the fineness requirements are met, and the fineness of the color paste is required to be consistent and the pigment content is consistent

Color

With sufficient agitation, slowly add the paste to the reference paint (white paint) or binder

Colorant varieties

Under the premise of ensuring that the color meets the requirements, the variety of colorant used should be as few as possible, because the more color types are added, the more light is absorbed, and the lower the brightness after coloring, the darker

Reserve the binder

When using colorant color matching, a part of the base material can be reserved at the beginning, so that the increase or decrease ratio
can be appropriately considered according to the number of colored paste added and the number of varieties.
However, all the binders and all the ingredients in the formula should be supplemented and thoroughly stirred before the color
is measured.
The benefit of the binder bunching is that it can be remedied
when the color is darkened.
Or when the required color has been formulated without using the quantity specified in the formula, the amount
of binder can be adjusted.

Glossy coatings

When blending a flat or semi-gloss coating, the base material in the formulation can be allowed to be added 70% to 80%, while the rest of the gloss is adjusted
.
When the added base material is close to the formula amount, the gloss and color of the coating film can be tested by the plate, and then the base material can be added as appropriate to make the gloss and color of the coating film meet the specified requirements, so as to avoid the trouble
of adding excessive amount of base material and in turn using the color paste and filler slurry.

Architectural paint tinting

When the demand for a certain color of architectural paint is not large, white paint can be used as the reference coating, and the color paste is
directly blended.
When mixing, first adjust the small sample, you can first add about 70% of the main color paste, then add the secondary color paste, and then add less each time, add multiple times, and then gradually approach the model or paint
.

Small sample coating film

The plate making method affects the color grading effect, so it should be carried out according to the
prescribed method.
The brush should be uniform and the thickness should be suitable, and it is best to use a wet film preparator scraping preparation
.

Colorimetry

The coating film should be observed under the diffuse natural light without strong color light interference around the field of view, and the coating film to be measured should be repeatedly observed and compared with the color card or the specified color template up, down, left and right, and sideways, so as to avoid human error
as much as possible.

Additives added

When the paint appears "floating hair" due to different densities or other reasons (such as pigment flocculation), an appropriate amount of floating hair flower prevention agent can be added to prevent
it.

Top 10 tips for color grading

1. Careful attention should be taken when grading, generally try the small sample first, initially find the amount of paint that should be matched, and then prepare the large sample according to the result of the small sample
   .
   First adjust the secondary and secondary colors separately in a
   small container.
   

2. First add the main color (a large amount of color, small coloring force in the color), and then the dark color (or color) with large dyeing power is slowly and intermittently added, and constantly stirred, at any time to observe the color changes
   .
   

3. "From light to deep", especially when adding pigments with strong coloring power, avoid excess
   .
   

4. When matching colors, there will be slight differences between
   the color of the paint and the film after drying.
   The color of various coatings is generally lighter when wet film, and when the paint is dried, the color deepens
   .
   Therefore, if the sample is a dry sample, the color paint needs to wait for drying before the color comparison is carried out; If the sample is a wet sample, you can drop the sample in the color paint to see if the two colors are the same
   .
   

5. In advance, it is necessary to understand the degree of float of the primary color in the re-color paint and the change of the paint, especially the amino coating and the vinyl chloride coating, which need to be paid more attention to
   .
   

6. When formulating multi-color coatings, it is necessary to choose coatings with the same properties for mutual blending, and the solvent system should also be mutually soluble, otherwise due to the poor missolubility of the coating, it will affect the quality, and even stratification, precipitation or gelling phenomenon occurs, which cannot be used
   .
   

7. Because the color often has a variety of different color heads, if it is matched with green, it is generally used yellow with green head and blue with yellow head; When matching purple and red, blue with red head and red with blue head should be used; When matching orange, red with yellow head and yellow with red head should be used
   .
   

8. Pay attention to the color of those auxiliary materials that should be added in the process of color blending, such as drying agents, curing agents, thinners, etc.
   , so as not to affect the color
   .
   

9. In the blending of gray, green and other re-color paint, due to the preparation of a variety of pigments, the density of pigments, oil absorption is different, it is likely to occur "floating color" and "flowering" and other phenomena, then you can add a trace amount of surfactant or leveling agent, anti-floating agent to solve
   .
   As usual, 0.
   1% of silicone oil is added to prevent and control, and various surfactants produced by foreign companies need to distinguish what kind of solvent system is used, and the amount of addition is generally 0.
   1% to 1%.
   
   

10. The use of color paint paint film slightly transparent characteristics, the selection of a suitable background color can make the color of the top paint more vivid than the color of the original coating, which is based on the principle of natural light reflection absorption, the background color and the primary color superimposed after the production of a color, paint engineering called "translucent"