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1. Materiales, productos químicos e instrumentos experimentales importantesTeñido de tela de lana, lana blanca, amoníaco, amoníaco, sulfato diluido, carbonato de sodio, nitrato de sodio, ácido acético, tetable de etyleina de sodio, glicerina, copa de quemaduras, tubo, termómetro, grillo de porcelana Read More
Cold -rolled pile staining, usually ethylene dyes. This is because the active base of the ethylene -type active dye is commonly used, which is very sensitive to alkali. In an alkaline bath, the reaction can be quickly disappeared, and the ethylene radon (-so2ch = CH2) with strong chemical activity c Read More
Although the fixing reaction rate is far greater than the hydrolysis reaction rate, if the process conditions are not controlled properly, such as the high pH value of the dyeing liquid or the temperature is too high. Read More
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 Read More
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 Read More
Before the cold rolling pile, the treatment should be in production:① Use a multi -rolling rolling method to ensure that the liquid penetration is evenly consistent. Generally, two grooves are used, and the front grooves are rolled with three rollers, and the rear grooves are used with two rollers.② Read More
In the processing process in front of the cold rolling pile, its stacking time is a non -processing process in front of the cold rolling pile. The stacking time is a very important process parameter. , 12h, 16H, 24H, etc. As for why this stacking time is used, few people pay attention and think abou Read More
Improving the wet rubbing fastness of reactive dyed deep-colored fabrics is one of the important ways to improve the quality of textiles and overcome the export barriers of textiles.The main reasons for the poor wet rubbing fastness of textiles are the floating color transfer of water-soluble dyes a Read More
There are many varieties of reactive dyes, complete chromatography, simple process and relatively low price, so they are widely used. If color difference, color flower or cylinder difference occurs after dyeing, it is usually necessary to re-dye or repair the fabric. This not only affects the produc Read More
The water solubility of reactive dyes is very good, but this characteristic is greatly affected by some substances or auxiliaries, which is often overlooked. In the dyeing process of reactive dyes, the problem of color difference or poor dyeing reproducibility occurs from time to time, which is ofte Read More
