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Photocatalyst white discharging method for forming foral patterns on textiles

A textile and photocatalyst technology, applied in the field of textile dyeing and finishing, can solve the problems of affecting the removal of decomposition products, affecting the whitening effect, and the effect of whitening effect, so as to save medicine and waste liquid discharge, easy to control, and adapt to the range of pH value wide effect

Active Publication Date: 2015-02-25
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, whether the water washing and desizing in the post-treatment of traditional whitening printing is sufficient also directly affects the removal of decomposition products, and then affects the whitening effect
In addition, the type and selection of the discharge agent in the traditional white discharge printing paste, the type of discharge printing fabric, and the control of the steaming process also have a direct impact on the white discharge effect.
[0006] The traditional discharge printing production not only consumes a lot of chemicals, but also consumes a lot of energy, which leads to an increase in production costs. At the same time, a large number of chemicals remaining in the discharge pulp also pose a greater threat to the environment.

Method used

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  • Photocatalyst white discharging method for forming foral patterns on textiles
  • Photocatalyst white discharging method for forming foral patterns on textiles
  • Photocatalyst white discharging method for forming foral patterns on textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This embodiment provides a photocatalyst whitening method for forming patterns on textiles, comprising the following steps:

[0030] 1. Select a specific dye to dye the textile as a primer according to the conventional dyeing method. In this example, the textile is a cotton fabric (8cm×20cm), and the processing conditions for the conventional ground color dyeing are: 3.0% (o.m.f.) activity Red X-3B dye, 24.0g L -1 Sodium sulfate, 15.0 g L -1 NaCO 3 , color fixing pH is 10.5, liquor ratio 1:30; dyeing at room temperature, adding salt to promote dyeing after 15 minutes, adding alkali to fix color when dyeing to 30 minutes, and fixing time is 30 minutes. After dyeing, it is treated by soaping twice, and the process conditions are: 2.0 g L -1 Soap powder, liquor ratio 1:50, 85°C for 15 min.

[0031] 2. Choose an opaque film or other thin material, and use physical or chemical methods to hollow it out to form the desired pattern, which is the pattern pattern with hollowe...

Embodiment 2

[0047] This embodiment provides a photocatalyst whitening method for forming patterns on textiles, and other steps of the method are the same as those in Embodiment 1. Wherein in step 1, the bottoming dyeing dye is reactive red X-3B; the pattern pattern in step 2 is lines and rhombuses of different widths (used to test the pattern outline clarity on the fabric); in step 3, the photosensitive whitening solution is 4.0gL -1 K 2 S 2 o 8 and adjust the pH value of the solution to 10, and carry out 35min whitening treatment on the dyed cotton fabric. The results obtained can be found in the attached image 3 , which is an effect diagram for judging the contour fineness after the whitening treatment in this embodiment. In the figure, the background color is the red color of the dyeing dye, and the pattern pattern is a white line and wedge shape, and the pattern outline is clear.

Embodiment 3

[0049] This embodiment provides a photocatalyst whitening method for forming patterns on textiles, and its steps refer to Embodiment 1. Wherein, the floral design in step 2 is the 2010 Shanghai World Expo logo; in step 3, the photosensitive whitening solution is 4.0g L -1 K 2 S 2 o 8 and adjust the pH value of the solution to 10, and carry out 35min whitening treatment on the dyed cotton fabric. The result is as Figure 4 As shown, it is the whitening effect diagram of the pattern of the present embodiment as the World Expo logo. In the figure, the background color is red, and the decorative pattern is the white World Expo logo.

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PUM

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Abstract

Disclosed is a photocatalyst white discharging method for forming a floral pattern on textile, comprising: tightly pressing a pattern plate on a dyed textile, or fixing the pattern plate at one side or two sides of the dyed textile, and placing in a reactor provided with a light source; and adding a photosensitive catalyzing white discharging solution to the reactor, and utilizing a photocatalyst principle to trigger a photosensitizer to realize the local decoloration of the dyed textile and generate a floral pattern. The present invention utilizes a simple process and device, has a short process flow and wide adaptability, and is easy to control, and eliminates the need for printing paste and expensive printing device as well as complex processing steps used in traditional printing. In addition, the photosensitive catalyzing solution can be recycled, thus avoiding the use of a large amount of chemical substances and the discharge of waste liquid, facilitating production cost reduction, having the remarkable advantages of energy-saving, consumption and emission reduction, clean production and the like, and having a very wide application prospect in the clean production of textile printing and dyeing industry.

Description

technical field [0001] The invention relates to a photocatalyst whitening method for forming patterns on textiles, in particular to a method for forming patterns on textiles by triggering reducing agents, oxidizing agents or semiconductor nanomaterials with a light source, which belongs to the technical field of textile dyeing and finishing. Background technique [0002] White discharge printing is also called engraved white printing. It destroys the ground color of colored fabrics with the help of reducing agents or oxidants (that is, prints on colored fabrics with a dye discharge agent and destroys the dyes in the printed color paste), so as to achieve partial printing. Eliminate color, and obtain various patterns and patterns of printing methods. Compared with direct printing, white-out printing can achieve the printing effect of deep and light flowers, and the pattern is more detailed and realistic, with rich pattern layers, strong color contrast, clear and delicate outl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06P5/15D06P1/38D06P3/66
CPCD06P5/15D06P3/66D06P5/158D06P5/2005D06P5/153D06P1/38
Inventor 龙家杰许红梅王爱东
Owner SUZHOU UNIV