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Stripping processing method of textile printing defective items

A technology for textile printing, dyeing, and processing methods, which is applied in the field of photocatalytic low-temperature peeling, can solve the problems of large chemical consumption, chemical environmental threats, low thermal initiation efficiency, etc., and achieves less pollutant residues and high initiation and catalytic efficiency. , the effect of simple equipment and process

Inactive Publication Date: 2010-07-28
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of traditional stripping method or process that uses high temperature to trigger the decomposition of oxidizing agents or reducing agents to release active substances, due to the low efficiency of thermal initiation, not only consumes a large amount of chemicals, but also consumes a large amount of energy, resulting in increased production costs. The large amount of various chemicals left in its peeling bath also poses a greater threat to the environment

Method used

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  • Stripping processing method of textile printing defective items
  • Stripping processing method of textile printing defective items
  • Stripping processing method of textile printing defective items

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The present embodiment adopts hydrogen peroxide (H 2 o 2 ) the ultraviolet light low temperature triggers the impregnation catalytic stripping method to carry out the stripping process to the dyed defective products, and the stripping solution is composed of a concentration of 1.20g L -1 of hydrogen peroxide (H 2 o 2 ) aqueous solution, and adjust the pH of the solution to 4.0; then add it to the reaction device at a bath ratio of 1:50.

[0021] The reaction device used in this embodiment is a batch reaction device. See attached figure 1 , in the intermittent processing unit 2, install the oxygen increasing device 6, adopt the oxygen increasing pump to constantly pass into air in the stripping bath; Install the quartz glass tube 3 and the low-pressure mercury lamp 4, the present embodiment is with 1 8W low-pressure mercury lamp It is an ultraviolet light source, and the power connection 1 (power supply is not shown) is connected to a low-pressure mercury lamp. Afte...

Embodiment 2

[0036] The present embodiment adopts hydrogen peroxide (H 2 o 2 ) The ultraviolet light low temperature triggers the padding catalytic stripping method to carry out the stripping treatment on the dyed defective products. According to the bath ratio of 1:30, it contains 0.90g L -1 Hydrogen peroxide aqueous solution, adjust pH to 6.0, use this solution as padding liquid, with the dyed cotton fabric defective product in embodiment 1 two dipping two rollings (passing off rate is 100%), then fabric is placed in the attached figure 1 Middle quartz casing 3 periphery, according to the method for embodiment 1, carry out photocatalytic stripping place 20min and 40min respectively under room temperature condition (25 ℃) to the cotton fabric dyed with reactive red M-3BE 100% dyestuff, its specific steps And other conditions are as described in Example 1.

[0037] Table 2 is the result of the catalytic stripping test of reactive red M-3BE 100% dyed defective products using the method d...

Embodiment 3

[0042] The present embodiment adopts potassium persulfate (K 2 S 2 o 8 ) the ultraviolet light low temperature triggers the impregnation catalytic stripping method to carry out the stripping process to the dyed defective products, and the stripping solution is 0.60g L respectively -1 and 2.00g L -1 Potassium persulfate (K 2 S 2 o 8 ) aqueous solution, and adjust the pH of the solution to 2.0. Then join in the batch reaction device by the bath ratio of 1: 30, press the method for embodiment 1, carry out photocatalytic stripping 30min under room temperature condition (20 ℃) ​​to the dyed defective product of cotton fabric in embodiment 1, its The steps and other conditions are as described in Example 1.

[0043] Table 3 is the result of the catalytic stripping test of reactive red M-3BE 100% dyed defective products using the method described in this example.

[0044] table 3

[0045]

[0046] As can be seen from the data shown in table 3, even at the lower concentrat...

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Abstract

The invention discloses a stripping processing method of textile printing defective items, which implements stripping processing on printing defective items and particularly on dyeing defective items by using an active material which is generated by initiating and catalyzing an oxidant or a reducing agent under ultraviolet light and low temperature and has strong oxidability or reducibility as a stripping agent so as to be convenient for the rehandling or redyeing of textiles. Because of the adoption of various active materials which are generated by ultraviolet light initiation and optical catalysis as the stripping agent, the method can obtain an approving stripping effect under normal pressure and temperature, thereby avoiding the consumption of a large amount of energy sources in a traditional high-temperature stripping method and the use of a large amount of reducing agent, oxidant and the like. The stripping technology of the invention has the advantages of high efficiency, energy saving, emission reduction, simple equipment and process and short procedures.

Description

technical field [0001] The invention relates to a method for stripping and treating defective textile printing and dyeing products, in particular to a method for photocatalytic low-temperature stripping of textile printing and dyeing defective products by using ultraviolet light to trigger reducing agents or oxidants, which belongs to textile dyeing and finishing technology field. Background technique [0002] In recent years, although due to the continuous progress and improvement of printing and dyeing processing technology and equipment, the authenticity rate of printing and dyeing processed products has been continuously improved, but in actual production, various color flowers, Printing and dyeing defects such as stains occur from time to time, according to the document "The practicability of stripping agent CY-730 in stripping dyed fabrics" ([J]. Dyeing and Finishing Technology, 2005, 27 (12): P30-34) report , The repair rate of defective products in general printing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06L3/04D06L3/10D06L3/06D06L3/02D06P5/10D06P5/04D06P5/15D06L4/13D06L4/23D06L4/24
Inventor 龙家杰解昌峰唐人成
Owner SUZHOU UNIV
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