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Treatment method of textile

A processing method and technology for textiles, applied in textiles and papermaking, fiber processing, plant fibers, etc., can solve the problems of high processing cost, long process flow and high BOD value, and can adapt to a wide range of pH values, simple equipment and process, The effect of reducing production and emissions

Inactive Publication Date: 2012-08-29
WUXI RUIDE TEXTILE FASHION DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, usually its process flow is long, energy consumption and water consumption are high, and a large amount of strongly alkaline or acidic wastewater is produced, and the wastewater contains various chemicals such as slurry, and the concentration of pollutants is high, which has caused serious problems to wastewater treatment and environmental protection. huge pressure
In addition, various bio-enzyme desizing and scouring processes developed in recent years have great advantages in process control, fiber quality protection, and reducing the amount of chemicals used in pre-treatment processes, but the specificity of bio-enzymes also limits Its scope of application (such as no bleaching enzyme at present) [Wu Shenhu. Desizing of cotton and polyester-cotton blended fabrics: a review of various desizing methods (1) [J]. Printing and Dyeing, 1991, 17(6): 55-59 Wu Shenhu. Desizing of cotton and polyester-cotton blended fabrics: Review of various desizing methods (2) [J]. Printing and Dyeing, 1992, 18 (1): 54-58; Wu Shenhu. Desizing of cotton and polyester-cotton blended fabrics Sizing: Review of various desizing methods (3) [J]. Printing and Dyeing, 1992, 18 (2): 57-60, 51; Zeng Qi. Discussion on the desizing process in the pretreatment of dyeing and finishing [J]. Textile Science Research , 2004, (03): 38-42]
At the same time, in the pre-treatment of cotton-type fabrics, especially high-count, high-density and heavy-weight fabrics, the removal of cotton seed hulls and wax is not good; it is difficult to use in the desizing process of PVA chemical synthesis size; Other bleaching agents still need to be used [Li Haijing, Gu Judong, etc. Cotton fabric bio-enzyme refining technology at home and abroad [J]. Printing and Dyeing, 2001, 27 (9): 38-40; Xu Gucang. Cotton fabric bio-enzyme pretreatment process [J] . Printing and Dyeing, 2002, 28(12): 39-44]
Secondly, the heat resistance and activity stability of biological enzymes are also poor, and they are not suitable for continuous processing technology. In practical applications, other additives are needed, and the processing cost of biological enzyme pretreatment is high, which limits its application in textiles. Widely used in pretreatment
In addition, the wastewater after biological enzyme treatment still has a large amount of discharge, and its BOD value is high

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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  • Treatment method of textile
  • Treatment method of textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] nanomaterial Al 2 o 3 , CaCO 3 Prepared to a mass concentration of 0.15g L -1 disperse aqueous solution, and adjust the pH of the solution to 7; then add it to the reaction device at a bath ratio of 1:50, respectively as a photocatalytic pretreatment bath for the green textile to be treated.

[0022] The present embodiment adopts batch reaction device to pure cotton woven green fabric (97gm -2 , containing starch and polyacrylate mixed slurry) for photocatalytic pretreatment of nanomaterials. See attached figure 1 , in the batch reactor 2, an oxygen increasing device 6 is installed, and an oxygen increasing pump is used to continuously feed air or oxygen into the stripping bath; a quartz glass tube 3 and a low-pressure mercury lamp 4 are installed, and the present embodiment uses one 8W low-pressure The mercury lamp is an ultraviolet light source, the power supply connection 1 (power supply not shown) is connected to the low-pressure mercury lamp, and the pure cott...

Embodiment 2

[0037] Select nanomaterial CaCO 3 As a photocatalyst, the dosage is 0.1g L -1 , and under the condition that the pH value is 5 and the bath ratio is 1:80, the front and back sides of the cotton green fabric described in Example 1 are respectively subjected to catalytic treatment at room temperature for 8 minutes by the method in Example 1, and then under mild conditions Down (prescription is the same as embodiment 1) through wet state chemical treatment 40min (wherein the blank test of present embodiment is that cotton green fabric is not through nanometer material photocatalytic pretreatment, directly carries out conventional one-bath method desizing, scouring, bleaching wet state chemical treatment). Its concrete steps and other conditions are as described in Example 1.

[0038] Table 2 is the test and comparison results after the pretreatment of the above-mentioned cotton green fabric by the method described in this embodiment.

[0039] Table 2

[0040]

[0041] As c...

Embodiment 3

[0044] Select nanomaterial CaCO 3 As a photocatalyst, the dosage is 0.1g L -1 , and at pH 3.5, the accelerator Al 3+ 6.0×10 -3 mol L -1 , and the bath ratio is under the condition of 1: 80, adopt the method for embodiment 1 to carry out the room temperature catalytic treatment of each 8min respectively to the front and back of cotton green fabric described in embodiment 1, then under mild condition (prescription is the same as embodiment 1) After wet chemical treatment for 60 minutes. Its concrete steps and other conditions are as described in Example 1.

[0045] Table 3 is the test results after the pretreatment of the above-mentioned cotton green fabric by the method described in this embodiment.

[0046] table 3

[0047]

[0048] The data in table 3 shows that under the conditions of this example, adding a small amount of accelerator Al 3+ It can also significantly improve the desizing, scouring and pre-bleaching of cotton fabrics, especially the improvement of th...

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Abstract

The invention discloses a treatment method of textile, comprising the following steps: adopting nanometer powder as photocatalyst to prepare photocatalysis bath, adding in a batch or continuous reactive unit, introducing air or oxygen continuously under ultraviolet light with the wavelength of 200-400nm to pretreat textile green body through photocatalysis, and then performing conventional one bath process treatment under gentle condition to realize the desizing and bleaching pretreatment of textile. The invention adopts active substances such as strong oxidizing radicals and the like which are generated through the photocatalysis of nanometer material as the pretreating agent of sizing agent of textile and natural impurities so that the reaction can be performed at room temperature and normal pressure and the photocatalysis pretreating agent can be used repeatedly; in addition, by using wet chemical treatment under gentle condition, large dosage of chemicals in traditional pretreatment technology can be avoided. Therefore, the textile green body pretreatment technology provided by the invention can reduce the production and emission of pollutants and is characterized by simple device and technology, high efficiency, and energy-saving and emission reduction.

Description

technical field [0001] The invention relates to a method for pre-treating a green body of textiles, belonging to the technical field of textile dyeing and finishing. Background technique [0002] The pretreatment of textiles is an important link in the dyeing and finishing process. The symbiotic impurities (such as wax, pectin, inorganic salts, pigments, lignin, etc.) produced by natural fibers (such as cotton, etc.) during the growth process can be effectively removed through the pre-treatment process. Oils, oil waxes, and various types of sizing on fabrics during the weaving process, so as to provide semi-finished products with good quality for the subsequent processes of textile dyeing, printing, and finishing [Wu Shenhu. Cotton and polyester-cotton blended fabrics Desizing: A Review of Various Desizing Methods (1) [J]. Printing and Dyeing, 1991, 17 (6): 55-59; (2) [J]. Printing and Dyeing, 1992, 18 (1): 54-58; Wu Shenhu. Desizing of cotton and polyester-cotton blended ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/79D06M11/46D06M11/45D06M11/44D06M101/16D06M101/06
Inventor 龙家杰管新海
Owner WUXI RUIDE TEXTILE FASHION DESIGN
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