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Cotton cloth bleaching process by compound low-temperature oxygen bleaching activating agents

An activator, oxygen bleaching technology, applied in textiles and papermaking, etc., can solve problems such as high energy consumption and fabric damage, and achieve the effect of improving product quality, good toughness, and reducing bleaching temperature

Inactive Publication Date: 2019-01-04
SHANDONG VOCATIONAL COLLEGE OF LIGHT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional H 2 o 2 The bleaching system needs to be treated at high temperature (95°C), high pH value or for a long time to achieve the ideal effect, which has the disadvantages of high energy consumption and serious damage to the fabric.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The concentration of each auxiliary agent in the bleaching solution used for cotton cloth bleaching is: H 2 o 2 3g / L, Tetraacetylethylenediamine 1.50g / L (H 2 o 2 The dosage ratio of tetraacetylethylenediamine is 2:1), N-4-(triethylammonium benzoyl)caprolactam chloride 1.0 g / L, NaOH1.0g / L, NaOH 2 SiO 3 1.0g / L; the liquor ratio in the bleaching process is 1:20, the bleaching temperature is 56°C, and the bleaching time is 5min. In this embodiment, the steaming and stacking time in the subsequent cloth container (95-100° C.) is 45 minutes.

Embodiment 2

[0018] The concentration of each auxiliary agent in the bleaching solution used for cotton cloth bleaching is: H 2 o 2 3.3g / L, Tetraacetylethylenediamine 1.55g / L (H 2 o 2 The dosage ratio of tetraacetylethylenediamine is 2.13:1), N-4-(triethylammonium benzoyl) caprolactam chloride 0.95 g / L, NaOH 1.1g / L, NaOH 2 SiO 3 0.8 g / L; the liquor ratio in the bleaching process is 1:21, the bleaching temperature is 57°C, and the bleaching time is 5 minutes. In this embodiment, the steaming and stacking time in the subsequent cloth container (95-100° C.) is 48 minutes.

Embodiment 3

[0020] The concentration of each auxiliary agent in the bleaching solution used for cotton cloth bleaching is: H 2 o 2 2.7g / L, Tetraacetylethylenediamine 1.45g / L (H 2 o 2 The dosage ratio of tetraacetylethylenediamine is 1.86:1), N-4-(triethylammonium benzoyl) caprolactam chloride 1.05 g / L, NaOH 0.9g / L, NaOH 2 SiO 3 1.2g / L; the liquor ratio in the bleaching process is 1:19, the bleaching temperature is 58°C, and the bleaching time is 5.5min. In this embodiment, the steaming and stacking time in the subsequent cloth container (95-100° C.) is 46 minutes.

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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PUM

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Abstract

The invention discloses a cotton cloth bleaching process by compound low-temperature oxygen bleaching activating agents, and belongs to the technical field of cotton cloth treatment. The process is characterized in that according to additives in bleaching solution, the concentration of H2O2 is 2.6g / L-3.6g / L, the concentration of tetraacetylenediamine is 1.35g / L-1.75g / L, the concentration of N-4-(triethyl ammonium methyl benzoyl) caprolactam chloride is 0.75g / L-1.75g / L, the concentration of NaOH is 0.7g / L-1.3g / L, the concentration of Na2SiO3 is 0.7g / L-1.3g / L, the bath ratio in the bleaching process is 1:(17-24), and bleaching temperature range from 56 DEG C to 75 DEG C. According to the process, a plurality of additives are selected and compounded with TBCC, a prepared compound has advantage over individually used TBCC or TAED by the aid of synergistic effect between additives on the premise of reduction of the dosage of the TBCC, the best whiteness is achieved under the lowest cost, and the best toughness of a fabric is retained.

Description

technical field [0001] The invention discloses a cotton cloth bleaching process using a compounded low-temperature oxygen bleaching activator, belonging to the technical field of cotton cloth treatment. Background technique [0002] Hydrogen peroxide is an excellent oxidative bleach. Pure concentrated hydrogen peroxide is a colorless liquid that can be dissolved in water in any proportion. Commercial products generally have solutions with concentrations of 3%, 30%, and 35%. Hydrogen peroxide is a weak acid. The bleaching of cellulose fiber textiles by hydrogen peroxide is generally carried out under heating conditions, and the bleaching effect is different due to different pH values. Under near-neutral conditions, the whiteness of the obtained product is good, but the fiber damage is relatively large. When bleaching at pH=10~11, not only the whiteness is good, but the fiber damage also reaches the minimum loss of this process; the pH value continues to increase. , the whi...

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 Applications(China)
IPC IPC(8): D06L4/13D06L4/12
CPCD06L4/12D06L4/13
Inventor 张旭芳刘占娜张昱
Owner SHANDONG VOCATIONAL COLLEGE OF LIGHT IND
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