Views: 0 Author: Site Editor Publish Time: 2021-06-03 Origin: Site
The wet rubbing fastness improver is suitable for improving the rubbing fastness of fabrics dyed with reactive dyes, direct dyes, sulfur dyes and vat dyes. The wet rubbing fastness of direct, reactive and sulfur dyes is low when dyeing thick and dark colors on cellulose fibers, especially the wet rubbing fastness of big black, scarlet and turquoise blue, etc., while the wet rubbing fastness of textiles exported to Europe and the United States Level 3 or above is required.
This passage is going to talk about the following questions of the wet rubbing fastness improver:
(1) What is the wet rubbing fastness improver?
(2) How to use the wet rubbing fastness improver?
(3) Precautions for using the wet rubbing fastness improver:
The wet rubbing fastness improver is a high molecular compound and does not contain formaldehyde. It is suitable for the fixing and finishing of reactive, vulcanized, direct and vat dyed fabrics. The wet rubbing fastness improver is easy to penetrate and adsorb. The wet rubbing fastness improver can form a lake with the dye inside the fiber, which makes the adhesion of the dye on the fiber stronger. The wet rubbing fastness improver can be bathed with silicone oil. The wet rubbing fastness improver has a soft hand and a smaller color, which can obviously improve the dry and wet fastness. The wet rubbing fastness of dark fabrics can be improved by 2-3 levels.
Application of the wet rubbing fastness improver:
1. Dipping method:
Dosage: The wet rubbing fastness improver: 4-8% (O.W.F) (adjusted according to the depth of color); glacial acetic acid: 2% (O.W.F) Bath ratio: 1:10～20
Process: colored cloth after dyeing (PH≤7)→dipping (temperature: 30℃, time: 20-30min)→drying (100～105℃)
2. Padding method:
Dosage: The wet rubbing fastness improver: 20～50g/L; glacial acetic acid: 2g/L
Process: Colored cloth after dyeing (PH≤7)→two dip and two rolling (temperature: 10～30℃, surplus rate: 70～80%)→drying (100～105℃)
The chemical material cannot be heated, it is better to use soft water for chemical material. The prepared working fluid is in the form of a translucent emulsion near 25°C. Please use it immediately after preparation. It must be used under low temperature conditions and the working fluid cannot be heated. If it is used before the setting machine, the material should be melted in the high tank first, and the stirring condition should be maintained; the material tank should be equipped with a bubbling device to prevent the fixing agent from precipitation during use; it should be cooled before being placed into the setting machine.
In the dyeing vat, the good material should be mixed before adding and maintaining a good circulation of the working fluid.