Salt-free dyeing method for calcium alginate fiber
A technology of calcium alginate fiber, salt-free dyeing, applied in dyeing method, fiber treatment, textile and papermaking, etc., can solve the problems of difficult treatment and recycling, increased fiber dyeing cost, poor fiber soaping fastness, etc. The effect of less damage to mechanical properties, improved soaping fastness and low cost
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[0024] Example 1
[0025] Prepare the aluminum sulfate aqueous solution with a concentration of 20% by mass, and put the calcium alginate fiber to be dyed into the aluminum sulfate aqueous solution according to the bath ratio of 1:30, shake for 60 minutes at 30°C, and then place it in a vacuum oven at 80°C Drying; Weigh Direct Scarlet 4BS according to 5% of the mass of calcium alginate fiber after pretreatment, weigh distilled water according to 30 times the mass of calcium alginate fiber after pretreatment, and add the weighed direct dye to the distilled water to make dye The dye solution is heated to 40°C, the pretreated calcium alginate fiber is put into the dye solution, and then the dye solution is heated to 70°C for dyeing treatment for 60 minutes; a calcium chloride aqueous solution with a concentration of 40g / L is prepared, According to the bath ratio of 1:20, put the dyed calcium alginate fiber into the above-mentioned calcium chloride aqueous solution, fix the color at ...
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[0026] Example 2
[0027] Prepare the aluminum sulfate aqueous solution with a concentration of 40% by mass, and put the calcium alginate fiber to be dyed into the aluminum sulfate aqueous solution according to the bath ratio of 1:30, shake for 30 minutes at 30°C, and then place it in a vacuum oven at 40°C Drying; Weigh Direct Scarlet 4BS according to 2% of the mass of calcium alginate fiber after pretreatment, weigh distilled water according to 30 times the mass of calcium alginate fiber after pretreatment, and add the weighed direct dye to the distilled water to prepare dye The dye solution is heated to 40°C, the pretreated calcium alginate fiber is put into the dye solution, and then the dye solution is heated to 90°C for dyeing for 30 minutes; a calcium chloride aqueous solution with a concentration of 20g / L is prepared, According to the bath ratio of 1:20, put the dyed calcium alginate fiber into the above-mentioned calcium chloride aqueous solution, shake for 60 minutes at ...
Example Embodiment
[0028] Example 3
[0029] Prepare the aluminum sulfate aqueous solution with a concentration of 30% by mass, and put the calcium alginate fiber to be dyed into the aluminum sulfate aqueous solution according to the bath ratio of 1:30, shake for 40 minutes at 30°C, and then place it in a vacuum oven at 60°C Drying; Weigh direct light fast yellow RT according to 3% of the mass of calcium alginate fiber after pretreatment, weigh distilled water according to 30 times the mass of calcium alginate fiber after pretreatment, and add the weighed direct dye to distilled water to prepare Dyeing solution, the temperature of the dyeing solution is raised to 40℃, the pretreated calcium alginate fiber is put into the dyeing solution, then the dyeing solution is heated to 80℃, and the dyeing treatment is 50min; the concentration of calcium chloride is 30g / L Aqueous solution, according to the bath ratio of 1:20, put the dyed calcium alginate fiber into the above calcium chloride aqueous solution,...
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