Visible photocatalytic functional fabric and preparation method thereof

A technology of functional fabrics and visible light, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve the problems of long operation period, complicated operation, low efficiency, etc., and achieve low preparation cost and simple operation , good processing effect

Active Publication Date: 2019-01-15
桐乡市鸿企纺织有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing method for treating printing and dyeing wastewater is mainly coagulation treatment, which has high energy consumption, low efficiency, large investment, complicated operation and long operation period.

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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  • Visible photocatalytic functional fabric and preparation method thereof

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Effect test

preparation example Construction

[0020] A method for preparing a visible light catalytic functional fabric, comprising the steps of:

[0021] (1) Treat the fabric body with lye. In the present invention, the lye is sodium hydroxide solution or potassium hydroxide solution, both of which are strong alkali solutions, so that a large number of -OH functional groups are formed on the surface of the fabric body for subsequent bonding.

[0022] Specifically, the treatment of the fabric body with lye can be carried out in the following manner: the fabric body is completely immersed in the lye, and can be stirred for 5 minutes to 30 minutes at a speed of 200r / min to 600r / min, so that the fabric body In full contact with the lye, more -OH functional groups are formed on the surface of the fabric body, and the temperature is 60 ° C ~ 100 ° C, so that sodium hydroxide or potassium hydroxide has a greater solubility, avoiding its deposition, and cannot carry out alkali well. deal with. Preferable settings: the concentr...

Embodiment 1

[0037] First, the polyimide fabric body is completely immersed in the sodium hydroxide solution with a concentration of 5g / L and a temperature of 60°C, and it is continuously stirred for 30min at a speed of 200r / min, and then the polyimide fabric body is used Rinse with deionized water and dry. Then immerse the polyimide fabric body treated with alkali solution in a nitrogen heterocyclic cationic compound solution with a temperature of 60°C and a pH value of 9 for 5 minutes, and use double dipping under the pressure of the paddle car to 0.1MPa. Padding is performed in the second padding process, followed by pre-baking at 100° C. for 5 minutes, and then baking at 160° C. for 1 minute to obtain the cationic modified polyimide fabric body.

[0038] First, the precursor thiourea was heated up to 500°C at a constant rate of 2°C / min, and then calcined at a constant temperature for 4 hours, then cooled to 480°C at a constant rate of 5°C / min, calcined at a constant temperature for 1 h...

Embodiment 2

[0042] First, completely immerse the viscose fabric body in a potassium hydroxide solution with a concentration of 20g / L and a temperature of 100°C, and stir continuously for 5 minutes at a speed of 600r / min, and then wash the viscose fabric body with deionized water and dry. Then, the body of the viscose fabric treated with alkali solution was immersed in the epoxy compound solution with a temperature of 100°C and a pH value of 11 for 60 minutes, and the two-dipping and two-rolling process was adopted under the condition that the pressure of the padding machine was 0.5MPa. Carry out padding, then pre-bake at 100°C for 10 minutes, and then bake at 160°C for 4 minutes to obtain the cationic modified viscose fabric body.

[0043] First, the precursors dicyandiamine and melamine were heated up to 600°C at a constant rate of 15°C / min, and then calcined at a constant temperature for 1 hour, then cooled to 540°C at a constant rate of 8°C / min, calcined at a constant temperature for 3...

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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Abstract

The invention provides a visible-light-catalysis-function fabric and a preparing method thereof, and belongs to the technical field of catalysts. The visible-light-catalysis-function fabric is that the surface of a fabric body is loaded with a g-C3N4 layer. The preparing method of the visible-light-catalysis-function fabric includes the steps that the fabric body is treated through alkali liquid; the fabric body is modified through a positive-ion modifying agent; a water solution of g-C3N4 quantum dots is obtained through ultrasonic dispersion and filtration, the modified fabric body is put into the water solution of the g-C3N4 quantum dots for 1 h or above. In the visible-light-catalysis-function fabric prepared with the method, the surface of the fabric body and the g-C3N4 have the large combining force, and the g-C3N4 quantum dots are fixedly deposited on the fabric body, and can not fall off; the contact area between the g-C3N4 and dye is increased, and the treatment efficiency of printing and dyeing wastewater is improved; recycling of the g-C3N4 quantum dots is convenient.

Description

technical field [0001] The invention relates to the technical field of catalysts, in particular to a visible light catalytic functional fabric and a preparation method thereof. Background technique [0002] With the rapid development and continuous progress of industry, the ecological environment on which human beings depend has been seriously polluted and destroyed. In recent years, with the rapid development of the printing and dyeing industry, printing and dyeing wastewater has become one of the main sources of water pollution in my country. Printing and dyeing wastewater has the characteristics of large water volume, many types, complex components, high organic content, high toxicity, and deep color. It is a difficult industrial wastewater to treat. Therefore, in order to ensure the sustainable development of the printing and dyeing industry, various sewage treatment technologies have emerged as the times require, which play an important role in degrading organic printi...

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 Patents(China)
IPC IPC(8): D06M13/322D06M11/38D06M13/47D06M13/477D06M13/11B01J27/24C02F1/30C02F103/30C02F101/38D06M101/06D06M101/30
CPCB01J27/24B01J35/004C02F1/30C02F2101/308C02F2101/38C02F2103/30D06M11/38D06M13/11D06M13/322D06M13/47D06M13/477D06M2101/06D06M2101/30
Inventor 高大伟陆振乾王丽丽俞俭王春霞宋晓蕾吕景春周青青
Owner 桐乡市鸿企纺织有限公司
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