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Performance Characteristics Of Pigments Jul 21, 2017

Pigments usually have the following properties:

Colour. A color pigment is a pigment that selectively absorbs and scatters visible light

In the natural light conditions show yellow, red, blue, green and other colors.

Tinting power. The ability of a colored pigment to absorb incident light. Can be expressed as a relative percentage of the color strength of the standard pigment sample.

Hiding power. The ability to cover the surface color of the substrate in the film-forming material. Pigment Commonly used to cover 1 square meters of paint in the area of paint contained in the number of grams.

Lightfastness. The pigment retains its original color performance under certain light. Generally use the eight system that eight best.

Weatherability. Pigment in a certain natural or artificial weather conditions, Pigment to maintain its original performance. Generally used five-level system that five best.

Volatile. Mainly refers to moisture, the general provisions of not more than 1%.

Oil absorption. Refers to 100 grams of pigment to form a uniform clumps when the number of refined linseed oil to the small amount of oil as well, the oil absorption and pigment particles relative to the specific surface area and structure.

Water soluble. Pigments contain water-soluble substances, Pigment expressed as a percentage of the pigment's mass. Paint used in the paint, the water is often controlled in less than 1%.

A pigment is a substance that can stain an object. Pigments are soluble and insoluble, with inorganic and organic differences. Inorganic pigments are generally mineral substances, humans have long known that the use of inorganic pigments, the use of colored soil and ore, Pigment painting and smear on the rock wall. Organic pigments are generally taken from plants and marine animals, such as qian blue, rattan and ancient Rome, extracted from shellfish.

Pigments can be divided into organic pigments and inorganic pigments. Inorganic pigments are usually metal oxides, sulfides, sulfates, chromates, molybdates, salts and carbon blacks. These pigments are insoluble in common solvents and plastics, and their thermal stability and light stability are generally better than organic pigments, but their coloring properties are worse than organic pigments. The relative density of inorganic pigments is generally 2.5 to 5.0, and the price is cheaper.

Organic pigments according to their structure can be divided into azo pigments, phthalocyanine pigments, heterocyclic pigments, lake pigments, dyes, fluorescent brighteners and fluorescent pigments. From the performance comparison, although the organic pigments in the heat resistance, weatherability and hiding power as inorganic pigments, but with a relatively small density, high color strength, Pigment bright color and chromatographic integrity and so on.

Performance characteristics of pigments

Performance characteristics

Pigments usually have the following properties:

Colour. Color pigments are a kind of pigment which can selectively absorb and disperse visible light, and can be yellow, red, blue and green under natural light conditions.

Tinting power. The ability of a colored pigment to absorb incident light. Pigment Can be expressed as a relative percentage of the color strength of the standard pigment sample.

Hiding power. The ability to cover the surface color of the substrate in the film-forming material. Commonly used to cover 1 square meters of paint in the area of paint contained in the number of grams.

Lightfastness. The pigment retains its original color performance under certain light. Pigment Generally use the eight system that eight best.

Weatherability. Pigment in a certain natural or artificial weather conditions, to maintain its original performance. Generally used five-level system that five best.

Volatile. Mainly refers to moisture, the general provisions of not more than 1%.

Oil absorption. Refers to 100 grams of pigment to form a uniform clumps when the number of refined linseed oil to the small amount of oil as well, Pigment the oil absorption and pigment particles relative to the specific surface area and structure.

Water soluble. Pigments contain water-soluble substances, expressed as a percentage of the pigment's mass. Paint used in the paint, the water is often controlled in less than 1%.