Explanation

A white, black, or colored powdery substance that is soluble in water, oil, or resin. It belongs to a category of colorant, and is usually used in coatings, inks, plastics, rubber, textiles, paper making and other products or fields in a dispersed state to make the products present the required color or produce some rust prevention, luminescence, temperature indication and other functions. According to their sources, they can be divided into two categories: natural and synthetic. According to chemical composition, it can be further divided into two categories: inorganic and organic. In practical use, it is usually divided into two major categories by color: white and color, such as titanium white, lithophone, a large number of white bodies with low covering power, black pigment dominated by carbon black, red pigment dominated by azo red and cadmium red, and blue pigment dominated by phthalocyanine blue. pigment can also be divided into coloring pigment, anticorrosive pigment, luminescence pigment, temperature indicating pigment, etc. according to their functions. pigment particles are special shaped or regular crystals whose physical properties are usually determined by the surface properties and composition of particles; Its chemical properties are determined by its chemical composition. The performance of pigment is usually measured by tinting strength, covering power, weather resistance, oil absorption and other indicators. The production process of synthetic pigment depends on the variety. The production process of natural pigment is relatively simple, requiring only processes such as beneficiation, crushing and grading. The surface treatment of pigment particles to improve the surface characteristics of pigment and make it more suitable for application is a very important process step in the manufacturing process of pigment. As a colorant, pigment has unique advantages and is widely used in various types of printing ink, architectural coatings, Qimou coatings, plastics, rubber, textile printing and dyeing and light industrial products for daily use.

Classification