Dyeing method for improving fixation rate of reactive dye
A dyeing method and technology for reactive dyes, which are applied in the dyeing field to improve the fixing rate of reactive dyes, can solve the problems of long fixing time, large energy consumption of dyeing methods, large water consumption and energy consumption of dyeing methods, etc., so as to reduce water consumption. and energy consumption, shorten the fixing time, improve the fixing rate and the effect of dye utilization
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Embodiment 1
[0055] (1) Add reactive red 2 reactive dyes to the water, add 0.1mol / L sodium hydroxide solution after the dye dissolves to prepare reactive dye liquor, the concentration of reactive dye in reactive dye liquor is 20g / L, reactive dye The pH of the dyeing solution is 12, and then the cotton fabric is dyed after the reactive dye solution is atomized to obtain a dyed cotton fabric with a liquid-carrying rate of 80%;
[0056] (2) After the dyed cotton fabric obtained in step (1) is wrapped and sealed with a film, it is wet-steamed. The temperature of the wet-steam is 50° C., and the time of the wet-steam is 5 minutes. Then the film is removed and dried. The temperature is 70°C, the drying time is 6 minutes, and then soaped to obtain the dyed cotton fabric A1.
Embodiment 2
[0058] (1) add reactive red 2 reactive dyes to water, add the sodium carbonate solution of 0.1mol / L again after dye dissolving, be mixed with reactive dye liquor, the concentration of reactive dye in the reactive dye liquor is 20g / L, reactive dye dye The pH of the solution is 9, and then the cotton fabric is dyed after the reactive dye solution is atomized to obtain a dyed cotton fabric with a liquid-carrying rate of 80%;
[0059] (2) After the dyed cotton fabric obtained in step (1) is wrapped and sealed with a film, it is wet-steamed. The temperature of the wet-steam is 70° C., and the time of the wet-steam is 4 minutes. Then the film is removed and dried. The temperature is 70°C, the drying time is 6 minutes, and then soaped to obtain dyed cotton fabric A2.
Embodiment 3
[0061] (1) Add reactive red 2 reactive dyes to the water, add 0.1mol / L sodium hydroxide solution after dye dissolving, be mixed with reactive dye liquor, the concentration of reactive dye in the reactive dye liquor is 25g / L, reactive dye The pH of the dyeing solution is 11, and then the cotton fabric is dyed after the reactive dye solution is atomized to obtain a dyed cotton fabric with a liquid-carrying rate of 75%;
[0062] (2) After wrapping and sealing the dyed cotton fabric obtained in step (1) with film, carry out wet stewing, the temperature of wet stewing is 70°C, the time of wet stewing is 5min, then the film is removed and dried, the temperature of dry The temperature is 70°C, the drying time is 6min, and then soaped to obtain dyed cotton fabric A3.
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