HOW TO EVALUATE THE EFFICIENCY OF LEVELING AGENT AS A TEXTILE AUXILIARY IN THE DYEING OF POLYESTER FABRIC WITH DISPERSE DYE
Recipe :
DYE BATH -1 DYE BATH - 2
Percent shade 2.0% 2.0%
Concentration of carrier 5.0 gram per liter 5.0 gram per liter
Temperature of dyeing 90*C 90*C
Time of dyeing 45 minutes 45 minutes
pH of dyeing 5.5 to 6.0 5.5 to 6.0
Leveling agent NIL 2 gram per liter
Procedure :
Preparation of Disperse Dye solution :
First weigh accurately 1.0 gm of disperse dye powder on a watch glass or on a glazed paper and transfer it into porcelain dye pot. Then add 2.0 ml of dispersing agent and stir it well to make a homogeneous paste. Then add 97 ml of hot water with constant stirring to make total volume 100 ml.
Dyeing Process :
First prepare two dye baths according to M:L.R at 50*c as dispersing agent 1 gram per liter, carrier 5 gram per liter, acetic acid 1 gram per liter , disperse dye 2.0% and leveling agent 2 gram per liter only in one bath no in other bath.
Enter well scoured polyester fabric in the above two dye baths 1 and 2 at 50*c and work at this level for 10 minutes. Then slowly raise the temperature of both the dye baths 1 and 2 to boil with in 45 minutes. After completion of dyeing time take out the dyed material and give R.C Treatment.
Reduction clearing treatment :
First take required ml of water in a dye pot according to M:l.R at room temperature then add 2 gram per liter caustic soda, 2 gram per liter sodium hydro sulfite and 1 gram per liter non ionic detergent. Then enter the dyed material above bath and raise temperature 80*c and work at this level for 15 minutes. Then neutralize with 1 gram per liter acetic acid squeeze and dry the fabric. Finally compare the dyeing if both samples 1 and 2.
