Choose paint for paint, you must understand these 7 performance indicators!

01, pigment color
pigment color, is due to the pigment in visible light in different wavelengths of light selective absorption results, affected by crystalline shape, particle size and dispersion performance and other physical properties;
For example, in the dark, pigments do not show any color, colors in strong light are brighter than in dark light, and the same pigment in different light sources (e.g. sunlight, incandescent light, fluorescence, etc.) can also show different colors.
02, coloring force
pigment coloring force refers to one pigment mixed with another pigment to show the ability to

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the same color, the stronger the coloring force, the less dosing of the slurry, the less water resistance of the slurry coating and the impact of film properties.
the same color, the quality of products from different manufacturers will be very different. The strength of pigment coloring force not only depends on its properties, but also has a certain relationship with its dispersion degree. The greater the dispersion, the stronger the coloring force.
03, cover force
pigment in the coating film can cover the surface of the coated object, so that the substrate cover can no longer be revealed through the coating film.
the strength of the pigment cover depends mainly on factors such as refring rate, absorption of light, crystal structure, and dispersion, as well as its absorption capacity of light irradiated on the coating surface. Carbon black, for example, absorbs the light that shines on it completely, so it has a very strong cover. The strength of the opaque color pigment cover also depends on their selective absorption of light.
Pigments are evenly dispersed in the base material, its particle size is small, larger than the surface area, and therefore the cover capacity is increased, but if the size of the pigment particle size is equal to half the wavelength of light, light will advance through the particles without refraction, and make the particles transparent.
the higher the crystallization of the pigment, the stronger its cover. The masking force of the mixed pigment cannot be calculated according to the masking force of the components of the mixture to add the law, in fact, the cover force of most mixed pigments is greater than the calculated value.
, mixing pigments with fillers in the right proportions does not affect their cover and helps reduce costs. Paint cover is high, brush area is high, the cost of the project is low.
04, dispersion and adaptability
The so-called pigment dispersion refers to the aggregation of pigment particles in the paint substitline is easily dispersed and its dispersion after the state, it is affected by pigment performance, preparation methods, particle size and particle size distribution and other factors.
the dispersion of pigments has obvious effects on the masking and coloring power of pigments, as well as on the chemical and chemical properties of coating films.
the adaptability of pigments, which is particularly important for emulsion-type architectural coatings. Because of the different pigment types, the role of pigments will also show a certain degree of difference, organic pigments this tendency is more obvious. Pigments are poorly dispersed in the coating and poorly matched with the coating, which can potentially flocculate or even fade.
05, fineness
color paste is not the finer the better, because pigments such as indistinct blue, indistinct green is itself a small molecular pigment, fineness is too small, particle size differences, poor dispersion, and paint compatible is not good, color cost increases, but also will attract floating hair flowers.
06, light-resistant weather resistance
pigments under the role of light color will produce a certain degree of change. Pigments will gradually darken their color in the long-term sunlight, and some pigments will also produce powdering under the effect of ultraviolet light in the sun. Exterior paint should be selected good light weather resistance pigments, generally light resistance is greater than 7 to 8 levels, 8 levels of the best, weather resistance is greater than 4 to 5 levels, 5 levels of the best.
07, acid-resistant alkaline
pigment-resistant acid-resistant alkaline for its use in architectural coatings is also an important performance indicator.
Some pigments are not acid-resistant, alkali-resistant, and therefore can not be used in acidic or alkaline coatings, made of coatings should not be used for acidic or alkaline environments, so customers choose coatings and latex paint color must pay attention to the choice of
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