cotton fabric dyeing with sulfur dye . tex-know

v  Exp Name: Cotton fabric dyeing by Sulfur  dyes

v  Introduction:  Sulfur dye are most commonly used dyes manufactured for cotton in terms of volume. Sulfur dyes are predominantly Black, Brown, Dark Blue.  Sulfur dyes are so called  because sulfur dyes contain “di-sulphide” linkage in their chemical structure .     

v Objective:

v  To know about Sulfur dye

v  To know about Dyeing recipe of sulfur dye

v  Know about Recipe calculation

v  To Know about cotton  fiber dyeing

v  To know working procedure of sulfur dye

v Apparatus

v  Beaker

v  Dropper

v  Pipette

v  Burner

v  Digital Balance

v  Dryer

v Recipe and calculation:

·         M: L                          = 1:20

·         Sample                     = 3.77gm

·         Dye                           =15% or =0.56gm

·         Total water              = 3.77×20 = 75.4 cc

·         Hydrous                    = 10 gm/l = (10×75.4) ÷1000 = 0.75 ml

·         Salt                           = 10 gm/l = (10×75.4) ÷1000 = 0.75 ml

·         NaOH                       = 10gm/l = (10×75.4) ÷1000= 0.75 gm

·         Time                         = 40 minute

·         Temperature            = 85-90°c

·         PH                 = 10-11

v  Sample:

          

Figure: Sulfur Dyeing Sample

v Working Procedure:

·         At first, we take a sample dyeing Becker

·         Then take 3.77gm white cellulosic fabric

·         And 75.4ml water

·         Then salt weight by digital balance. Take as our recipe% of salt soda

·         After That we add all chemical, Hydrous, NaOH, as per our recipe chart.

·         Then adds 15% stock- color as we find our calculation

·         And mixed all chemical then, wet sample fabric squeeze water. then the sample fabric put in the beaker and close this, now start dyeing in 80-90°c and 10-11 Ph for 40 minute process this dyeing.

·         After dyeing cool wash this sample fabric and dry this fabric

v  Conclusion: By this experiment now we know about Sulfur dyes, Recipe, recipe Calculation and Working Procedure of Sulfur Dyes. Its will be helpful for us.