Views: 19 Author: Site Editor Publish Time: 2023-05-12 Origin: Site
Reactive Turq Blue G is a copper pupa dye. Its molecular mother is composed of four pyrodoline collapse with copper ion. In the so, the dye volume of the dyeing structure is the largest.
Reactive Turq Blue G has a high sunlight. At the depth of 1/1, it can still reach level 6 (ISO). Even at the 1/6 standard depth, level 4-5 (ISO) can be reached. It has a bright blue color, which cannot be achieved by any other structured dyes. Therefore, it is often used as the main dye dyeing green and blue.
Due to the particularity of the Reactive Turq G molecular structure, its dyeing process is different from other dyes.
Reactive Turq G molecular weight is large, and the molecular structure is three -dimensional. The solubility at 50 ° C is 40g / L. After dissolving in water, the dye molecules tend to crystallize, and it is solid -shaped in water dissolving.
The solubility of Reactive Turq Ge is quite sensitive to electrolyte. When the electrolyte exists, the crystallization phenomenon of the dye molecules is more obvious, and its solution is gradually condensed into a cluster. When the electrolyte concentration exceeds a certain amount, this condensate dehydration forms a precipitation. Taking sodium chemical as an example, at a static state at room temperature, when the concentration exceeds 250g/L, the dye will be precipitated within a few minutes. This phenomenon is called salt analysis. Therefore, when dyeing, the Reactive Turq G is poor, and the permeability and diffusion are poor. The dye is easy to accumulate on the fiber surface during the dyeing process, resulting in floating color on the surface. Degree, white cloth stains and wet and wet friction is relatively poor, and color flowers often occur.
Upper dyeing rate
Reactive Turq G is a relatively small dye. This type of dye has one thing in common, that is, the saltness of the electrolyte (infected agent) is less salt. When the Yuanming powder or salt concentration <30g/L, the infection effect It is obvious, but when the concentration is 3g/L, the effect of promoting the dyeing effect is significantly reduced. Therefore, for the active emerald blue G, it is necessary to increase its upper dyeing rate, and it cannot be used to increase the dose dose, because this will cause salt analysis of dyes.
In order to improve the upper dyeing rate of Reactive Turq G, the pre-alkali method is generally used. Before the dye is added, the pre-dye can be found. It is commonly known as the base. Usually, the pH value of the solution is usually controlled at 7.4-7.8. A small amount of alkaline agent increases the conversion of negative ions on the hydroxyl group on the cellulose to attract dyes that have eliminated reactions. The alkaline agent is used as the second type of effective infection, which can make up for the dye salt that is poorly sensitive to the sensuality of the dye salt is poorly sensitive. defect. However, the alkali agent used in the bottom should not be too much, and the pH value of the solution should not be too high, otherwise, it will promote the dye to condense salt analysis.
The condensed salt analysis of Reactive Turq G is often mistaken for a hydrolyzed response in the dye. The fact is not the same. Dyes dye re -dissolved (for example, adding dissolved uniform dyes, solvents, such as urea, sulfur, or fully stirring), its dyes can still be dyed and react with fibers, but in actual production, it is not feasible to feasible Because once salt analysis occurs, even if it is used to re -dissolve it with various means, color flowers will definitely produce.