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Apr . 15, 2024 16:17 Back to list

How to use sulphur black dyeing in cotton?-buy instant indigo

How to use sulphur black dyeing in cotton?
1. Sulfur black, so sulfur dyes themseives do not have dyeing abilitly for cotton. However, it has good dyeing properties for cotton byreducing the dye to leucosomes in aqueous solution of Sodium sulfide. The sulfur dye dyeing is carried out in Sodium sulfidesolution.
2. Operation of sulfur balck dye chemical materia: put the prepared Sodium sulfide into the cylinder and dissolve it in 80 'c water for-10 minutes, and then into sulphur black and dissolve it in boling water for 20 minutes. And add soda ash in 1% dosage of sulphurblack.

Sulphur Black


3.Function and dosage of each auxiliary agensodlum sulide (Na2S). it is a solvent for dissolving sulphur dyes. its function is to reduce sulfur black into the Leucosome of dyesand has the dyeing ability for cotton. it plays the role of reducing and dissolving sulphur blackRatio of Sodium sulide to sulohur black. 1-5
Soda ash (Na2c03). soda ash plays a role in improving the reduction stabilty of dye solution in sulphur black dyeing solution ancpreventing premature oxidation of dyes. t is also an alkaline agent for oil removal. When dyeing with hard water, it can prevent the*alcium and magnesium salts in hard water from affecting the dyeing efiect. The general dosage is about 2% of the fabric. Excessivedosage will make the fabric reddish brown
Sodium sulphate (Na2S04). the coloring rate of sulphur dyes is low. Adding sodium sulphate to the dye solution is helpful to improvethe dyeing rate. Therefore, sodium sulphate plays a role in promoting dyeing.Deareaser. remove the ol stain on the cloth, improve the penetration effect of the embryonic cloth, and improve the dye uptake and
evelness.
Anti wrinkle agent: prevent creases and creases on the cloth surface.Urea: plays the role of anti embrittlement.Soft oil: it can soften the cloth and make it feel soft and comfortable

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