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Low-temperature bleaching and active dyeing one-bath treatment method for purified cotton knitted fabrics

A technology of reactive dyeing and treatment methods, applied in dyeing, textiles and papermaking, etc., can solve problems such as low production efficiency, water consumption, and high energy consumption, and achieve reduction in energy consumption, energy consumption and environmental pollution, and ensure dyeing performance effect

Inactive Publication Date: 2017-05-17
JIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the current process consumes a lot of water and energy, and the production efficiency is also low.

Method used

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  • Low-temperature bleaching and active dyeing one-bath treatment method for purified cotton knitted fabrics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The following processes are used to treat pure cotton knitted fabrics:

[0042] (1) Low-temperature activated bleaching pretreatment of pure cotton knitted fabrics, the treatment conditions are: cationic bleaching activator 11g / L, hydrogen peroxide 3.4g / L, sodium citrate 83g / L, penetrant 0.5g / L, hydrogen peroxide stabilizer 0.5g / L, the liquor ratio is 15:1, the temperature is 50°C, and the time is 60 minutes.

[0043] (2) After the bleaching treatment is completed, directly add 4 mL of catalase for 15 minutes to fully decompose the residual hydrogen peroxide;

[0044] (3) Utilize above-mentioned raffinate to prepare reactive dye dyeing liquid and dye, condition is: reactive dye 1% owf, temperature 60 ℃, dyeing time 60min; Carry out color fixing after dyeing is finished, color fixing condition is: alkali agent 15g / L , temperature 60°C, time 60min;

[0045](4) After dyeing and fixing, the fabric is taken out, washed and soaped, the conditions are: alkali agent 2g / L, so...

Embodiment 2

[0048] The following processes are used to treat pure cotton knitted fabrics:

[0049] (1) Low-temperature activated bleaching pretreatment of pure cotton knitted fabrics, the treatment conditions are: cationic bleaching activator 11g / L, hydrogen peroxide 3.4g / L, sodium citrate 83g / L, penetrant 0.5g / L, hydrogen peroxide stabilizer 0.5g / L, the liquor ratio is 15:1, the temperature is 50°C, and the time is 60 minutes.

[0050] (2) After the bleaching treatment is completed, directly add 4 mL of catalase for 15 minutes to fully decompose the residual hydrogen peroxide;

[0051] (3) Utilize above-mentioned raffinate to prepare reactive dye dyeing liquid and dye, condition is: reactive dye 1% owf, temperature 60 ℃, dyeing time 0min; Carry out color fixation after dyeing is finished, color fixing condition is: alkali agent 15g / L , temperature 60°C, time 60min;

[0052] (4) After dyeing and fixing, the fabric is taken out, washed and soaped, the conditions are: alkali agent 2g / L, ...

Embodiment 3

[0055] The following processes are used to treat pure cotton knitted fabrics:

[0056] (1) Low-temperature activated bleaching pretreatment of pure cotton knitted fabrics, the treatment conditions are: cationic bleaching activator 10g / L, hydrogen peroxide 3g / L, sodium citrate 78g / L, penetrant 1g / L, hydrogen peroxide stabilizer 1g / L, The bath ratio is 10:1, the temperature is 30°C, and the time is 90 minutes.

[0057] (2) After the bleaching treatment is completed, directly add 4 mL of catalase, and treat at a temperature of 50°C for 15 minutes to fully decompose the residual hydrogen peroxide;

[0058] (3) Utilize above-mentioned raffinate to prepare reactive dye dyeing liquid and dye, condition is: reactive dye 1% owf, temperature 60 ℃, dyeing time 3min; Carry out color fixation after dyeing is finished, color fixing condition is: alkali agent 15g / L , temperature 60°C, time 60min;

[0059] (4) After dyeing and fixing, the fabric is taken out, washed and soaped, the conditio...

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Abstract

The invention discloses a low-temperature bleaching and active dyeing one-bath treatment method for purified cotton knitted fabrics, and belongs to the technical field of textile printing and dyeing. The method adopts the following processes: (1) performing low-temperature active bleaching treatment on the purified cotton knitted fabrics, wherein waste liquid does not need to be drained after the treatment is completed; (2) after the bleaching treatment is completed, adding deoxidizing enzyme into residual bleaching liquid to make residual hydrogen peroxide fully removed; (3) preparing active dyeing liquid by utilizing the residual liquid, dyeing the purified cotton knitted fabrics, and adding an alkaline agent for fixation; (4) finally, washing, soaping, washing and naturally air-drying the dyed fabrics. According to the low-temperature bleaching and active dyeing one-bath treatment method for the purified cotton knitted fabrics, the two processes of low-temperature bleaching and active dyeing for the purified cotton knitted fabrics are carried out in the same treatment bath, so the process flow can be shortened, the dyeing performance of cotton knitted fabrics is ensured, the residual bleaching liquid is recycled, the water saving and energy saving effects are obvious, and the environmental pollution caused by waste printing and dyeing liquid is reduced.

Description

technical field [0001] The invention relates to a one-bath treatment method of low-temperature bleaching and reactive dyeing of pure cotton knitted fabrics, belonging to the technical field of textile printing and dyeing. Background technique [0002] There are a lot of impurities on the pure cotton knitted fabric, such as hemicellulose, pectin, wax, cotton seed hulls, natural pigments, etc., which make the fabric yellow in color and poor in water absorption, affecting its various properties. Therefore, it is necessary to carry out scouring and bleaching treatment for the purpose of removing natural impurities, so that the fabric can obtain good water absorption and clean appearance, so as to facilitate subsequent dyeing and other processing. [0003] In order to overcome the defects of high energy consumption and reduced fiber strength of traditional hydrogen peroxide bleaching, researchers have developed a bleaching activator, adding it to H 2 o 2 After aqueous solution,...

Claims

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Application Information

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IPC IPC(8): D06L4/13D06L4/12D06L4/27D06L4/21D06P1/38D06P1/673D06P3/66
CPCD06P1/38D06P1/6735D06P3/66
Inventor 许长海于拥军唐文君姚金龙向中林杜金梅孙昌钱晓红陈森孙月玲
Owner JIANGNAN UNIV