Acid dyes refer to a dye that contain acid groups in dye molecules that can be combined with amino groups in protein fiber molecules with ion bonds and applicable under acidic, weak acids or neutral conditions.Its structure is mainly nitrogen and 为, and a few are aromatum methane structures. Dyes an
The nature and geometric shape of fiberUnder the same spinning conditions, when the fiber is long, the fiber has a large combination force, and the fiber is not easy to draw from the yarn during friction, which helps the wear resistance of the fabric; the fineness of the fiber is moderate conducive
According to the perspective of modern dyeing theory, the reason why dyes can be dyed in dyeing fiber have a certain degree of fastness on the fiber fabric, because the dye molecules and fiber molecules exist in various gravity, the principles and principles of dyes and various types of dyes The dye
The staining fastness refers to the ability to maintain the original color state under the influence of various external factors during the use of or during the processing process of dye fabrics.The staining fastness is one of the important quality indicators to measure the finished product. The dye
1. Select reactive dyes with less floating color after dyeingFloating color is the main reason for the unqualified damp friction of dark color fabrics.Active dye -dye dyes include dyes that have been adsorbed on the fiber without reaction to the fiber, partial hydrolyzed dyes, and ethylene cymbal dy
External factors such as solvents, temperature, dye concentration, electrolytes, and radiation light added to the dyeing solution will cause dyes in the solution, or the state of the dye fabric changes, resulting in changes in the color of the dye. 1. The effect of solvent and mediumThe absorption w
The sulphur dye has a history of more than a hundred years since its birth. The first sulfur dye was made by Croissant and Bretonniere in 1873. They will contain organic fibers, such as wood chips, bran, scrap cotton and waste. Paper and other sulfide and polysulfonal alkali are obtained. This dark
After the textile is printed, in addition to the ice dye and soluble reduction dye, the general dye must be steamed.The purpose is to make the printed textiles complete the hygroscopic and warming of the fiber and color paste, the restoration of the accelerated dye and the dissolution of the fiber,
There are many factors that affect the dye dyeing process, mainly including: 1. Dye propertiesThe dye structure and molecular size and shape determine the solubility, diffusionability of dyes, and the height of dyes and fibers. Second, the nature and concentration of the aidThere are many categories
As a kind of spandex elastic fiber, a polymeal polymethyl ester composed of a flexible chain segment and a rigid chain segment. It was successfully studied by Bayer in Germany in 1937. In 1959, it was produced by DuPont. Because it has many advantages and good quality, it is recognized by the peers,
1. Unqualified color plasticityThe color fastness includes sun exposure, soap washing fastness, sweat staining fastness, friction fastness, sublimation fastness, ironing fastness, etc. These fastness is The dyeing process and external conditions are closely related. Therefore, whether the color fast
1. dissolvedQuality activated dye products are well used in good water solution. The concentration of the solubility and the preparation of the dyeing solution is related to the selected bath ratio, the amount of electrolyte, the dyeing temperature, and the amount of urea. The solubility of active d