Method for preparing Ag modified TiO2 composite air purifying function fabric in situ at low temperature

An air purification, low temperature in-situ technology, applied in physical treatment, textile and papermaking, dry cleaning fiber products, etc., can solve the problems of easy photo-oxidative degradation of flexible substrates, low temperature resistance of flexible substrates, low catalytic efficiency, etc. The effect of avoiding the decline of agglomeration efficiency, no secondary pollution, and simple preparation method

Inactive Publication Date: 2011-08-31
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two methods have problems such as the photocatalyst being covered by the adhesive, serious agglomeration, low catalytic efficiency, and easy photooxidative degradation of the flexible substrate.
Due to the low temperature resistance of flexible substrates, the use of photocatalyst deposition on flexible substrates and then crystal conversion methods is limited.

Method used

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  • Method for preparing Ag modified TiO2 composite air purifying function fabric in situ at low temperature
  • Method for preparing Ag modified TiO2 composite air purifying function fabric in situ at low temperature
  • Method for preparing Ag modified TiO2 composite air purifying function fabric in situ at low temperature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Wool fabric surface pretreatment

[0032] Ultrasonic cleaning of wool fabric with acetone solution for 30 minutes, drying at room temperature 20°C for 12 hours, then treating in BASF's high-efficiency cleaning agent Kieralon OL solution at 40°C for 20 minutes, and drying at 80°C for 30 minutes;

[0033] (2) Protective finishing of wool fabric against photooxidation

[0034] Take out the wool fabric padding fiber anti-oxidation finishing solution LZQ for 30 minutes, pre-bake at 70°C, and then heat up to 130°C for 2 minutes; the LZQ finishing solution is composed of 1-3% Tween 80, 4-10% nano Hydroxyapatite MP 40, composed of 3-8% tetraerythritol ester, 6-10% octyltrimethoxysilane and 69-86% water;

[0035] (3) Preparation of low temperature precursor

[0036] Under an inert environment, slowly add 0.02mol titanium tetraisopropoxide to 30mL isopropanol under stirring, add 0.01mol triethylamine as a stabilizer to the mixture, stir at 200rpm for 1min, and then continue...

Embodiment 2

[0044] (1) Cotton fabric surface pretreatment

[0045] Ultrasonic cleaning of cotton fabrics with acetone solution for 40 minutes, drying at room temperature 25°C for 14 hours, then treating in high-efficiency cleaning agent Kieralon OL solution at 43°C for 25 minutes, drying at 83°C for 37 minutes;

[0046] (2) Protective finishing of cotton fabric against photooxidation

[0047] Take out the cotton fabric padding fiber anti-oxidation finishing solution LZQ for 40 minutes, pre-bake at 75°C, and then heat up to 140°C for 3 minutes; the LZQ finishing solution is composed of 1-3% Tween 80, 4-10% nano Hydroxyapatite MP40, 3-8% tetraerythritol ester, 6-10% octyltrimethoxysilane and 69-86% water.

[0048] (3) Preparation of low temperature precursor

[0049] Under an inert environment, slowly add 0.08mol titanium tetraisopropoxide to 40mL isobutanol under stirring, add 0.02mol triethylamine as a stabilizer to the mixture, stir at 250rpm for 2min, and then continue to add 60mL A ...

Embodiment 3

[0057] (1) Surface pretreatment of linen fabric

[0058] Ultrasonic cleaning of cotton fabrics with acetone solution for 50 minutes, drying at room temperature 30°C for 16 hours, then treating in high-efficiency cleaning agent Kieralon OL solution at 45°C for 30 minutes, drying at 85°C for 45 minutes;

[0059] (2) Protective finishing of linen fabric against photooxidation

[0060] Take out the linen fabric padding fiber anti-oxidation finishing solution LZQ for 50 minutes, pre-bake at 80°C, and then heat up to 150°C for 4 minutes; the ingredients of the LZQ finishing solution are 1-3% Tween 80, 4-10% nano Hydroxyapatite MP40, 3-8% tetraerythritol ester, 6-10% octyltrimethoxysilane and 69-86% water.

[0061] (3) Preparation of low temperature precursor

[0062] Under an inert environment, slowly add 0.15 mol of titanium tetraisopropoxide to 50 mL of isobutanol under stirring, add 0.03 mol of triethylamine as a stabilizer to the mixture, stir at 300 rpm for 4 min, and then co...

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Abstract

The invention relates to a method for preparing an Ag modified TiO2 composite air purifying function fabric in situ at low temperature, which comprises the following steps of: (1) ultrasonically washing a fabric by an acetone solution, drying and processing in an efficient cleaning agent; (2) soaking and rolling the fabric in an antioxidant finishing solution LZQ, pre-baking and baking at 130-150DEG C; (3) adding titanium (IV) isopropoxide into anhydrous alcohol in an inert environment and adding a stabilizing agent, a mixed solution of anhydrous alcohol, acid and deionized water and a wetting agent; (4) soaking the fabric into sol, drying, removing the sol retained on the surface of a material and drying again; and (5) processing the dried fabric in boiling water, prebaking at 40-50 DEGC again, soaking in a silver nitrate solution and obtaining the composite air purifying fabric by the irradiation of a quasi-molecule ultraviolet light source. The invention has simple method, low cost and no secondary pollution and is easy for industrialized production, and the obtained flexible air purifying material has good air purifying effect.

Description

technical field [0001] The invention belongs to the field of preparation of composite air purification functional fabrics, in particular to a low-temperature in-situ preparation of Ag-modified TiO 2 A method for compounding air-purifying functional fabrics. Background technique [0002] In recent years, with the rapid development of my country's economy and the improvement of people's lives, the decoration level of offices and residences is getting higher and higher. New building materials, especially chemical synthesis building materials, are widely used in high-end furniture and household appliances, and have entered the home and office. Spices, cosmetics, polishes, air fresheners, insect repellants, insecticides, detergents, etc. have also become indispensable supplies in people's lives. While people are enjoying the comfort and satisfaction brought by these products, they are constantly producing various pollutants and harmful substances, destroying indoor air quality (...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/46D06M10/06D06M11/71D06M13/224D06M13/513D06L1/08A61L9/22A61L101/02
Inventor 何瑾馨刘保江高品王振华黄长根刘路赵强强唐文君姚金龙张宾王红丽胡成佐徐斗峰宣建赖宇坤薛明
Owner DONGHUA UNIV
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