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One-bath fabric dyeing process of pretreatment and dyeing

A fabric dyeing and process technology, applied in the field of textile printing and dyeing, can solve the problems of easy fading, small dyeing batches, long production process, etc., and achieve the effects of shortening the process, improving color fastness, and low raw material cost

Active Publication Date: 2021-01-15
福建石狮晨光化纤染织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Polyester fiber is a hydrophobic fiber made of polyethylene terephthalate. Due to the tight molecular chain structure of polyester and the lack of hydrophilic groups such as carboxyl and sulfo groups, direct dyes, acid dyes, and basic dyes cannot be used. Dyeing, most of the existing dyeing methods use high temperature and high pressure, hot melt or dyeing with disperse dyes in the presence of carriers, but in high temperature and high pressure dyeing, some disperse dyes have poor high temperature and dispersion stability, which often leads to the problem of uneven dyeing. Due to the limitation of equipment safety under high temperature and high pressure conditions, the problems of small dyeing batches, large liquor ratio, high labor intensity, and large consumption are very obvious, and the production process is long, various energy consumption is large, pollution is serious, and production efficiency is low. Low, which deviates seriously from the development trend of ecological dyeing, increases the percentage of dyeing, but the carrier is easy to remain on the fabric or fiber, affecting the light fastness of azo disperse dyes, and pollutes the environment and poisons the human body when used at the same time, and There is also the problem of easy fading, which affects the wearing performance of the fabric, and needs further improvement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • One-bath fabric dyeing process of pretreatment and dyeing

Examples

Experimental program
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Effect test

preparation example Construction

[0020] The preparation method of the high-temperature leveling agent is as follows: add sodium dodecylbenzenesulfonate, dicarboxypolyether, p-toluenesulfonic acid, and isobutyltriethoxysilane to the reaction kettle in proportion, raise the temperature to 150°C, and keep warm React for 160 minutes, then continue to heat up to 250°C, keep warm for 60 minutes, then react at 300°C and 0.12MPa for 30 minutes, cool down to 120°C, add glyceryl monostearate, dimethyl terephthalate, ethylene Mix bis-stearamide, glyceryl ether oleate and water evenly, keep warm for 120 minutes, and discharge after cooling down to room temperature to obtain a high-temperature leveling agent;

[0021] Dyes include 0.6% vermilion NR dye, 1.1% H4GFS scarlet dye and 0.28% S-5BL carnelian dye;

[0022] The alkaline reduction cleaning agent is the alkaline reduction cleaning agent DR-84CN produced by Wuxi Derong Chemical Co., Ltd.;

[0023] The penetrant is the penetrant JFC produced by Jiangsu Haian Petroche...

Embodiment 1

[0026] A kind of fabric dyeing process of pretreatment and dyeing one bath, comprises the following steps:

[0027] (1) One bath of pretreatment and dyeing: enter the cloth, add water, add 0.5g / L glacial acetic acid, 0.8g / L dispersant, 0.5g / L penetrant, heat up to 85°C at 3.5°C / min , add 1.5g / L high-temperature leveling agent, keep warm for 15min, add dye, then raise the temperature to 105℃ at 1℃ / min, add 2g / L caustic soda, 2g / L hydrogen peroxide, keep warm for 15min, and then heat up at 2.5 ℃ / min to raise the temperature to 140°C, keep it warm for 35 minutes, and finally cool down to 75°C at 3.5°C / min, and drain the liquid. Specifically, the bath ratio of pretreatment and dyeing is 1:5.5;

[0028] (2) Post-treatment: Add water, add 0.6g / L alkaline reducing cleaning agent, 0.8g / L glacial acetic acid, heat up to 75°C at 2.5°C / min, wash for 25min, drain, add water again, and add 0.8g / L liquid wax, treatment for 10min;

[0029] Specifically, the high-temperature leveling agent ...

Embodiment 2

[0036] A kind of fabric dyeing process of pretreatment and dyeing one bath, comprises the following steps:

[0037] (1) One bath of pretreatment and dyeing: enter the cloth, add water, add 1.5g / L glacial acetic acid, 0.5g / L dispersant, 0.8g / L penetrant, heat up to 75°C at 2.5°C / min , add 0.5g / L high-temperature leveling agent, keep warm for 25min, add dye, then raise the temperature to 115℃ at 2℃ / min, add 1g / L caustic soda, 3g / L hydrogen peroxide, keep warm for 5min, and then heat up at 1.5 ℃ / min to raise the temperature to 130°C, keep it warm for 45 minutes, and finally cool down to 65°C at 2.5°C / min, and drain the liquid. Specifically, the bath ratio of pretreatment and dyeing is 1:4.5;

[0038] (2) Post-treatment: Add water, add 0.2g / L alkaline reducing cleaning agent, 1.2g / L glacial acetic acid, heat up to 85°C at 3.5°C / min, wash for 15min, drain, add water again, and add 0.3g / L liquid wax, treatment for 20min;

[0039]Specifically, the high-temperature leveling agent in...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a pre-treatment and dyeing one bath fabric dyeing method. The pre-treatment and dyeing one bath fabric dyeing method comprises following steps: 1, pre-treatment and dyeing onebath, wherein cloth feeding is carried out, water is added, glacial acetic acid, a dispersant, and an osmotic agent are added, an obtained mixture is heated to 75 to 85 DEG C, a high temperature levelling agent is added, thermal-insulation reaction is carried out for 15 to 25min, a dye is added, an obtained product is heated to 105 to 115 DEG C, caustic soda and hydrogen peroxide are added, thermal-insulation reaction is carried out for 5 to 15min, an obtained reaction product is heated to 130 to 140 DEG C, thermal-insulation reaction is carried out for 35 to 45min, the temperature is reducedto 65 to 75 DEG C through cooling, and liquid discharging is carried out; and 2, post-treatment, wherein water is added, an alkaline reduction cleaning agent and 0.8 to 1.2g / L glacial acetic acid areadded, an obtained mixed material is heated to 75 to 85 DEG C, washing is carried out for 15 to 25min, liquid discharging is carried out, water is added, liquid wax is added, treatment is carried outfor 10 to 20min. According to the pre-treatment and dyeing one bath fabric dyeing method, pre-treatment and dyeing are combined, and a same bath ratio is adopted, so that technology process is shortened, resource waste is reduced, and the pre-treatment and dyeing one bath fabric dyeing method is consistent with ecological dyeing development trend.

Description

technical field [0001] The invention belongs to the technical field of textile printing and dyeing, and in particular relates to a one-bath fabric dyeing process of pretreatment and dyeing. Background technique [0002] Polyester fiber is a hydrophobic fiber made of polyethylene terephthalate. Due to the tight molecular chain structure of polyester and the lack of hydrophilic groups such as carboxyl and sulfo groups, direct dyes, acid dyes, and basic dyes cannot be used. Dyeing, most of the existing dyeing methods use high temperature and high pressure, hot melt or dyeing with disperse dyes in the presence of carriers, but in high temperature and high pressure dyeing, some disperse dyes have poor high temperature and dispersion stability, which often leads to the problem of uneven dyeing. Due to the limitation of equipment safety under high temperature and high pressure conditions, the problems of small dyeing batches, large liquor ratio, high labor intensity, and large cons...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P3/54D06P1/613D06P1/62D06P1/64D06P1/649D06P1/651
CPCD06P1/613D06P1/622D06P1/625D06P1/64D06P1/6495D06P1/65125D06P3/54
Inventor 江清照
Owner 福建石狮晨光化纤染织有限公司
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