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A preparation method of a double self-cleaning fabric with long-lasting good photocatalytic self-cleaning and surface superhydrophobic effect

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: 2018-04-20
BEIJING INST OF CLOTHING TECH +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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  • A preparation method of a double self-cleaning fabric with long-lasting good photocatalytic self-cleaning and surface superhydrophobic effect
  • A preparation method of a double self-cleaning fabric with long-lasting good photocatalytic self-cleaning and surface superhydrophobic effect
  • A preparation method of a double self-cleaning fabric with long-lasting good photocatalytic self-cleaning and surface superhydrophobic effect

Examples

Experimental program
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preparation example Construction

[0043] The invention provides a method for preparing a double self-cleaning fabric, the method comprising the following steps:

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

[0045] Step 2: Irradiating the fabric;

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

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

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

[0049] In a further preferred embodiment...

Embodiment 1

[0102] Example 1 Preparation of modified nano titanium dioxide

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

[0104] Filter the sample, wash it, and place it in a muffle furnace for calcination at 180°C for 2 hours to obtain modified nano-titanium dioxide, which is denoted as M-TiO 2 .

Embodiment 2

[0105] Example 2 Preparation of dual self-cleaning fabrics

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

[0107] (2) The nylon cloth after the desizing is carried out ultraviolet normal pressure irradiation 30 minutes;

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

[0109] (4) Transfer the dried nylon fabric to a vacuum oven, vacuumize and dry at 140°C for 120 minutes, and obtain a fabric with a long-lasting and good photocatalytic self-cleaning effect, which is recorded 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 in particular 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 essential element of human life, clothing often needs to be washed for reasons of cleanliness. Frequent washing is prone to pilling or deformation, which affects both appearance and comfort. At the same time, clothing cleaning will cause huge waste of water resources and energy. waste, and chemical detergents also pollute the environment. Therefore, it is urgent to develop a fabric with self-cleaning effect. [0003] And some nanomaterials have amazing special properties, such as self-disinfection and self-cleaning functions. Such novel functions are obtained by photocatalytic nanomaterials, in which nano-titanium dioxide (Nano TiO 2 ) is the most widely used photocatalyst. Good photocatalytic activity, non-t...

Claims

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Application Information

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Patent Type & Authority Patents(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 INST OF CLOTHING TECH
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