What are the properties of pigments

Pigments, as the name implies, are substances that can dye objects. Nowadays, pigments are widely used, so many people may not understand the properties of pigments, and let us analyze the properties of pigments.

Color: Color pigment is a pigment that selectively absorbs and scatters visible light energy, and can present yellow, red, blue, green and other colors under natural light conditions.

Tinting Strength: The ability of a coloring pigment to absorb incident light. It can be expressed as a relative percentage of the tinting strength of a standard pigment sample.

Hiding Power: The ability to cover the surface color of a substrate in a film-forming substance. It is usually expressed in grams of pigments contained in a paint covering an area of 1 square meter.

Lightfastness: The ability of a pigment to retain its original color when exposed to light. Generally, the eight-level system is used, and the eight-level is the best.

Weatherability: The ability of a pigment to maintain its original properties under ambient or artificial weather conditions. Generally, the five-level system is used, and the five-level system is the best.

Volatile matter: mainly refers to moisture, which is generally specified as 1.

Oil absorption: refers to the number of grams of refined linseed oil required for 100 grams of pigment to form a uniform agglomerate, whichever is smaller is better, and the oil absorption is related to the specific surface area and structure of the pigment particles.

Water-soluble substance: the substance that is soluble in water contained in the pigment, expressed as the mass percentage of the pigment. The water-soluble content of pigments used for paint production is often controlled below 1.