Dyes refer to a type of colored substances that are soluble in water or other media and have an affinity for fibers. Dyes are all organic. As a dye, it should meet three conditions:
First, dyes are generally required to be soluble in water. Because dyeing is usually carried out in an aqueous solution of dye (referred to as dye liquor), an aqueous dye solution can only be prepared when the dye is dissolved in water. Secondly, the dye is dyed in a single molecular state, and only dissolution can transform the dye from a crystal into a single molecular state. It is worth pointing out that some dyes can be directly soluble in water, such as direct dyes, reactive dyes, cationic dyes, etc. Some dyes cannot be directly soluble in water, such as vat dyes, sulfur dyes, etc., but after appropriate simple chemical treatment, they can be Make them soluble in water. Furthermore, some dyes have greater solubility in water, such as reactive dyes, cationic dyes and other molecular dyes. At this time, the main body of the dye aqueous solution is the dye dispersion, that is, the dye suspension.
Second, the dye must have an affinity for the fiber. Affinity refers to the tendency of a dye to bind to fibers. The greater the affinity, the greater the tendency of the dye to dye the fiber, and the higher the utilization rate of the dye. It is worth noting that different types of dyes have different affinities for different types of fibers. A certain type of dye has a greater affinity for one or several types of fibers, but has only a small or no affinity for other types of fibers. Therefore, when applying dyes, the dye type must be selected for specific fibers.
Third, the dye must have color. It is believed that dyes are colorants in the dyeing process. Only by using the colors of dyes can we obtain colorful dyes.
Pigments are different from dyes in that they are colored substances that are insoluble in water and have no affinity for fibers. Pigments include organic and inorganic substances. Since pigments cannot automatically dye onto fibers, in printing and dyeing processes, the adhesive force of adhesives is usually relied upon to dye pigments onto fabrics to form colors or patterns. Therefore, pigments are also called coatings. Pigments are also widely used in paint, ink, rubber and other industries.
Extended reading: https://www.yingjietex.com/product/Nylon-twill-with-breathable-coat-Fabric.html
Extended reading: https://www.alltextile.cn/product/product-7-78.html
Extended reading:https://www.tpu-ptfe.com/post/7734.html
Extended reading: https://www.tpu-ptfe.com/post/7727.html
Extended reading:https://www.china-fire-retardant.com/post/9568.html
Extended reading:https://www.alltextile.cn/product/product-74-725.html
Extension Read: https://www.brandfabric.net/400d300d-polyester-jacquard-coating-oxford -fabric/
Extended reading: https://www.alltextile.cn/product /product-27-319.html
Extended reading: https://www. alltextile.cn/product/product-94-270.html
Extended reading: https://www.yingjietex.com/product/400D-Polyester-Double-Catenulate-Dobby-OXFORD-Fabric.htm
