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Preparation method of double-self-cleaning fabric with lasting and good photocatalytic self-cleaning and surface super-hydrophobic effects

A self-cleaning and fabric technology, applied in the field of preparation of dual self-cleaning fabrics, can solve the problems of low self-cleaning durability, no catalytic effect, catalytic efficiency, etc.

Active Publication Date: 2016-06-15
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current self-cleaning materials have some defects, such as: no catalytic effect or low catalytic efficiency under visible light, low self-cleaning durability, etc.

Method used

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  • Preparation method of double-self-cleaning fabric with lasting and good photocatalytic self-cleaning and surface super-hydrophobic effects
  • Preparation method of double-self-cleaning fabric with lasting and good photocatalytic self-cleaning and surface super-hydrophobic effects
  • Preparation method of double-self-cleaning fabric with lasting and good photocatalytic self-cleaning and surface super-hydrophobic effects

Examples

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Effect test

preparation example Construction

[0043] The present invention provides a method for preparing dual self-cleaning fabrics, which includes the following steps:

[0044] Step 1: Add modified nano titanium dioxide to water;

[0045] Step 2: Irradiate the fabric;

[0046] Step 3: Immerse the fabric treated in step 2 in the modified nano-titanium dioxide aqueous solution prepared in step 1, and optionally dry after taking it out to obtain a self-cleaning fabric.

[0047] In a preferred embodiment, in step 1, the modification methods of the modified nano-titanium dioxide include metal and non-metal doping, semiconductor composite, surface precious metal precipitation, dye sensitization and conjugated polymer doping modification. Sex.

[0048] In a further preferred embodiment, in step 1, the modification mode of the modified nano titanium dioxide is conjugated polymer doping modification, for example: polythiophene, polyaniline, polypyrrole or polyvinyl alcohol PVA doping .

[0049] In a further preferred embodiment, in step...

Embodiment 1

[0102] Example 1 Preparation of modified nano titanium dioxide

[0103] Add 2g of nano titanium dioxide into a three-necked flask containing 50mL of deionized water, then add 4g of polyethylene glycol PEG, mechanically stir for 3h, add 2% polyvinyl alcohol PVA aqueous solution, continue to mechanically stir for 2h, add 20mL methanol, Stop stirring.

[0104] The sample was filtered and washed clean, placed in a muffle furnace and calcined at 180°C for 2 hours to obtain modified nano titanium dioxide, which was recorded as M-TiO 2 .

Embodiment 2

[0105] Example 2 Preparation of double self-cleaning fabric

[0106] (1) Add 1g of the modified nano-titanium dioxide prepared in Example 1 to 100mL of deionized water, and ultrasonic;

[0107] (2) Irradiate the desizing nylon fabric under normal pressure with ultraviolet for 30 minutes;

[0108] (3) Immerse the nylon fabric treated in (2) in the nano-titanium dioxide aqueous solution in (1), ultrasonicate for 30 minutes, take it out in a blast oven and bake for 10 minutes at 60°C, and then immerse again in the nano-titanium dioxide aqueous solution in (1) In the medium, ultrasonic for 30 minutes, take it out and bake it in a blast oven at 60°C for 10 minutes;

[0109] (4) Transfer the dried nylon fabric to a vacuum oven, vacuum and dry at 140°C for 120 minutes, to obtain a fabric with long-lasting and good photocatalytic self-cleaning effect, denoted as M-TiO 2 -PA.

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Abstract

The invention discloses a preparation method of double-self-cleaning fabric. The method comprises steps as follows: 1, modified nano titanium dioxide is added to water; 2, the fabric is irradiated for treatment; 3, the fabric treated in the step 2 is soaked in a modified nano titanium dioxide water solution prepared in the step 1 and then taken out to be dried, and the self-cleaning fabric is obtained. The preparation method adopts a simple process, the cost is low, and industrial production is easily realized. The fabric prepared with the method has double self-cleaning effects including a photocatalytic self-cleaning effect and super-hydrophobic self-cleaning effect and has lasting photocatalytic activity.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to the preparation of a self-cleaning material, in particular, to the preparation of a double self-cleaning fabric. Background technique [0002] As an indispensable life element in human daily life, clothing often needs to be washed for cleanliness. Frequent washing is prone to pilling or deformation, which affects both aesthetics and comfort. At the same time, clothing cleaning will cause huge water and energy resources. Waste, and chemical detergents can also pollute the environment. Therefore, it is urgent to develop a fabric with self-cleaning effect. [0003] Some nanomaterials have amazing special properties, such as self-disinfection and self-cleaning functions. Such novel functions are obtained by photocatalytic nanomaterials. Among them, NanoTiO 2 ) Is the most widely used photocatalyst. Good photocatalytic activity, non-toxicity, biocompatibility, low pri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M10/06D06M101/34D06M101/32D06M101/06D06M101/12
CPCD06M10/06D06M16/00D06M2101/06D06M2101/12D06M2101/32D06M2101/34D06M2200/12D06M2200/25
Inventor 周顺利张秀芹王峰王锐杨梓薇阳明书
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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