Direct dyeing process for chemical fiber
A technology for chemical fibers and dyes, applied in the field of direct dyeing of chemical fibers, can solve the problems of increasing the burden of sewage treatment, unfavorable ecological environment, soil salinization, etc., and achieves enhanced dyeing effect and efficiency, enhanced color fixing effect, and reduced dosage. Effect
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Embodiment 1
[0041] A kind of direct dye dyeing process of chemical fiber, comprises the following steps:
[0042] (1) Pretreatment: Pretreatment of chemical fiber, specifically: 1 g / L urea, 4.5 g / L TF-104M phosphate-free neutral deoiling spirit, 1 g / L sodium dodecylbenzenesulfonate, 60 % hydrogen peroxide 2 g / L, oxidative desizing agent OS 0.8 g / L, treated in a 30°C water bath for 2-3 minutes, the bath ratio is 20:1, and then the water bath is heated up at a rate of 2.5°C / min. After reaching 90°C, keep it at this temperature for 30-40min, and then lower the temperature of the water bath at a rate of 1.5°C / min. When the temperature drops to 60°C, discharge the treated wastewater, and then re-inject clean water to rinse at room temperature until The lotion is neutral and finally dried;
[0043] (2) Pre-setting: the pre-setting process is performed on the chemical fiber through the pre-setting machine. During the pre-setting process, the setting temperature is 160°C, the speed is 20m / min, a...
Embodiment 2
[0057] A kind of direct dye dyeing process of chemical fiber, comprises the following steps:
[0058] (1) Pretreatment: Pretreatment of chemical fiber, specifically: urea 1.2g / L, phosphorus-free neutral deoiling spirit TF-104M 5 g / L, sodium dodecylbenzenesulfonate 1.2 g / L, 60% hydrogen peroxide 2.5 g / L, oxidative desizing agent OS 1g / L, treat in a 30°C water bath for 2-3 minutes, the bath ratio is 20:1, and then heat up in the water bath at a rate of 2.5°C / min. After reaching 90°C, keep it at this temperature for 35 minutes, and then lower the temperature of the water bath at a rate of 1.5°C / min. When the temperature drops to 60°C, discharge the treated wastewater, and then re-inject clean water to rinse at room temperature until the washing liquid For neutral, finally dry;
[0059] (2) Pre-setting: the pre-setting process is performed on the chemical fiber through the pre-setting machine. During the pre-setting process, the setting temperature is 165°C, the vehicle speed is ...
Embodiment 3
[0073] A kind of direct dye dyeing process of chemical fiber, comprises the following steps:
[0074] (1) Pretreatment: Pretreatment of chemical fiber, specifically: urea 1.5g / L, phosphorus-free neutral deoiling spirit TF-104M 5.5 g / L, sodium dodecylbenzenesulfonate 1.5 g / L, 60% hydrogen peroxide 3 g / L, oxidative desizing agent OS 1.2 g / L, treated in a 30°C water bath for 2-3 minutes, the bath ratio is 20:1, the water bath is then heated up, the heating rate is 2.5°C / min, when the temperature After rising to 90°C, keep it at this temperature for 40 minutes, and then lower the temperature of the water bath at a rate of 1.5°C / min. When the temperature drops to 60°C, discharge the treated wastewater, and then re-inject clean water to rinse at room temperature until washed. The liquid is neutral, and finally dried;
[0075] (2) Pre-setting: the pre-setting process is performed on the chemical fiber through the pre-setting machine. During the pre-setting process, the setting tempe...
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