Active dye dyeing process through fabric modification
A reactive dye and modification technology, applied in the field of reactive dye dyeing technology, can solve the problems of large difference in dyeing performance, difficult one-bath and one-step dyeing of linen and wool composite textiles, etc., to achieve shortened dyeing process and high feasibility , the effect of good color fastness
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Embodiment 1
[0015] A kind of reactive dye dyeing process by fabric modification, comprises the steps:
[0016] (1) Flax modification: soak the flax fabric after being wetted and wrung out with warm water into the modifying liquid containing a certain concentration of cationic modifier and auxiliary agent, the concentration of the cationic modifier is 20g / L, the obtained The auxiliary agent is sodium hydroxide, its concentration is 28g / L, and the bath ratio is 1:10. After heating up to 80°C, the linen fabric is modified for 70 minutes. After modification, the fabric is taken out, washed twice with hot water, and washed twice with cold water. and then treated with 2 g / L glacial acetic acid solution for 2 min, and finally washed with water until neutral and dried;
[0017] (2) Dyeing: Accurately weigh the dye and auxiliaries. The dye is acid red A-2BF, and the dye solution is prepared with distilled water. In the dye solution: reactive dye 3g / L, sodium carbonate 20g / L, sodium chloride 60g / L,...
Embodiment 2
[0019] A kind of reactive dye dyeing process by fabric modification, comprises the steps:
[0020] (1) Flax modification: soak the flax fabric after being wetted and wrung out with warm water into the modifying liquid containing a certain concentration of cationic modifier and auxiliary agent, the concentration of the cationic modifier is 45g / L, the obtained The auxiliary agent is sodium hydroxide, its concentration is 28g / L, and the bath ratio is 1:10. After the temperature is raised to 60°C, the linen fabric is modified for 60 minutes. After modification, the fabric is taken out and washed twice with hot water and twice with cold water. and then treated with 2 g / L glacial acetic acid solution for 2 min, and finally washed with water until neutral and dried;
[0021] (2) Dyeing: Accurately weigh the dye and auxiliaries. The dye is acid black A-MP, and the dye solution is prepared with distilled water. In the dye solution: reactive dye 3g / L, sodium carbonate 20g / L, sodium chlo...
Embodiment 3
[0023] A kind of reactive dye dyeing process by fabric modification, comprises the steps:
[0024] (1) Flax modification: soak the flax fabric after being wetted and wrung out with warm water into the modifying liquid containing a certain concentration of cationic modifier and auxiliary agent, the concentration of the cationic modifier is 30g / L, the obtained The auxiliary agent is sodium hydroxide, its concentration is 28g / L, and the bath ratio is 1:10. After the temperature is raised to 70°C, the linen fabric is modified for 80 minutes. After modification, the fabric is taken out and washed twice with hot water and twice with cold water. and then treated with 2 g / L glacial acetic acid solution for 2 min, and finally washed with water until neutral and dried;
[0025] (2) Dyeing: Accurately weigh the dyes and auxiliaries. The dyes are acid green blue A-G, and the dye solution is prepared with distilled water. In the dye solution: reactive dye 3g / L, sodium carbonate 20g / L, sodi...
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