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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

Inactive Publication Date: 2015-07-08
TAICANG CHENGLE CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of a large amount of inorganic salts will increase the burden of sewage treatment, and may lead to problems such as water quality deterioration and soil salinization, which is not conducive to the ecological environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

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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Abstract

The invention provides a direct dyeing process for a chemical fiber. The direct dyeing process for the chemical fiber comprises the steps of pretreatment, pre-shaping, modification treatment, dyeing, soaping, color fixing, after-treatment, drying, sizing, calendaring and rolling. According to the direct dyeing process for the chemical fiber, the modification treatment is added, so that performances of a chemical fabric are subjected to the modification treatment basically, the dyeing degree of the fabric is increased, and the difficulty of a subsequent dyeing step is reduced; during dyeing, the mass utilization of inorganic salt is avoided; furthermore, substitute alkali is used for replacing a conventional sodium carbonate substance, so that the consumption is reduced, a color fixation effect is also improved, and the washing fastness of the chemical fiber is further improved; soaping and color fixing processes are added, so that the dyeing fastness is good; environment-protection formaldehyde-free TCD-R is utilized in the color fixing process, and color-fixed fibers are gradually dried, so that the firmness of the fibers is greatly improved; the post-treatment process is added, so that the color fastness and the flexibility of the fabric are improved, the roughness of the fabric is reduced, and the fabric is fluffy and has high resilience.

Description

technical field [0001] The invention relates to the field of chemical fibers, in particular to a direct dyeing process of chemical fibers. Background technique [0002] Chemical fibers are fibers with textile properties that are made from natural polymer compounds or artificially synthesized polymer compounds through the processes of preparing spinning dope, spinning and post-treatment. It has the advantages of light resistance, wear resistance, easy washing and drying, no mildew and no moths. Widely used in the manufacture of clothing fabrics, filter cloths, conveyor belts, hoses, ropes, fishing nets, electrical insulation wires, medical sutures, tire cords and parachutes, etc. [0003] Dyeing is an important treatment process of chemical fiber. Various dyes are used in the dyeing process. Direct dyes have complete color spectrum, simple dyeing process and low price. They are one of the commonly used dyes for cotton fiber products. Direct dyes are anionic dyes. When dyein...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06P1/00D06P1/44D06P5/08D06P5/10D06P5/04D06L1/14D06M13/46D06M16/00D06C7/02D06C15/00
Inventor 陈秀珍
Owner TAICANG CHENGLE CHEM FIBER
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