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Preparation of gemini type composite colloidal sols and applications thereof in UV-preventing and anti-bacteria finishing

A composite sol and sol technology, which is applied in fiber treatment, textiles and papermaking, plant fibers, etc., can solve the problems of easy aggregation, migration and weak binding of nanoparticles, and achieve good UV shielding and antibacterial properties, saving energy Human and material resources, the effect of easy control of the reaction

Inactive Publication Date: 2009-02-11
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN1614133A discloses a method for UV-resistant finishing of cotton fabrics by organic solvent-modified titanium dioxide sol. Particle-specific properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0033] Example 1 Gemini-type cationic TiO 2 / SiO 2 Preparation of composite sol

[0034] 40 parts of ethanol, 30 parts of ethyl orthosilicate, 27 parts of water and 1 part of dimethylene-bis(hexadecyldimethylammonium chloride) were sequentially added to the three-necked flask. Stirring on a magnetic stirrer at 500r / min for 15min, under this condition, 2 parts of hydrochloric acid with a concentration of 0.01mol / L was added dropwise to the above mixture at a speed of 40drop / min. After the dropwise addition, the rotating speed of the magnetic stirrer was adjusted to 500 r / min, and the stirring was continued at room temperature for 24 hours to obtain a Gemini-type silica sol.

[0035] 50 parts of ethanol, 25 parts of tetrabutyl titanate, and 20 parts of water were sequentially added to the three-necked flask. Stirring on a magnetic stirrer at 600r / min for 15min, under this condition, 5 parts of hydrochloric acid with a concentration of 0.01mol / L was added dropwise to the above...

example 2

[0037] Example 2 Anti-ultraviolet / antibacterial finishing of pure cotton woven fabric by dipping method

[0038] The cloth sample is selected as pure cotton plain woven fabric (20tex×20tex) through desizing, scouring and bleaching.

[0039] The specific process is as follows:

[0040] Take 2g of pure cotton plain woven fabric (20tex×20tex) through desizing, scouring and bleaching, and put it into Gemini type composite TiO 2 / SiO 2 After processing in the composite sol for 60 minutes, the finished fabric was dried in a blast oven at 60°C, and then baked at 150°C for 3 minutes.

[0041] The ultraviolet light transmittance of the cotton fabric finished by the above method is close to 15.5% in the UVA wave band, the UVB wave band is close to 2.5%, and the UVC wave band is close to 1%, that is, the fabric has a good anti-ultraviolet effect; The antibacterial rates of the sample to Staphylococcus aureus and Escherichia coli were 92.1% and 90.5%, respectively, that is, the fabric ...

example 3

[0042] Example 3 Anti-ultraviolet / antibacterial finishing of pure cotton woven fabric by padding method

[0043] The cloth sample is selected as pure cotton poplin woven fabric (40tex×40tex) through desizing, scouring and bleaching.

[0044] The specific process is as follows:

[0045] Take 2g of pure cotton poplin woven fabric (40tex×40tex) through desizing, scouring and bleaching, and put it into Gemini type composite TiO 2 / SiO 2 The composite sol is processed by two dipping and two rolling methods, and the excess rate is 65%. The finished fabric is dried in a blast oven at 60°C, and then baked at 150°C for 3 minutes.

[0046] The ultraviolet light transmittance of the cotton fabric finished by the above method is close to 15% in the UVA wave band, the UVB wave band is close to 2%, and the UVC wave band is close to 1%, that is, the fabric has a good anti-ultraviolet effect; The antibacterial rates of the sample to Staphylococcus aureus and Escherichia coli were 93.1% and...

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PUM

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Abstract

The invention discloses a preparation method of Gemini cationic TiO2 / SiO2 composite sol and an application method on cotton fabric ultraviolet prevention / antibacterial multifunctional finishing thereof, belonging to the textile chemical technology field. The invention uses the precursors of silicon and titanium, Gemini cationic compound, water, catalyst and solvent to prepare the Gemini cationic TiO2 / SiO2 composite sol for the cotton fabric ultraviolet prevention / antibacterial finishing. The composite sol has the advantages of simple process, easy reaction control, high product purity, low cost, environmental protection and energy-saving performance. The particle size is smaller than 10nm. After the finishing, uniform films are formed on fabrics which can endow the fabrics with good performances of shielding ultraviolet rays and resisting bacteria and has no strong effect on the wearability of the fabrics.

Description

technical field [0001] The invention belongs to the technical field of textile chemical industry, and in particular relates to a Gemini type cationic TiO 2 / SiO 2 Preparation of composite sol and its application in anti-ultraviolet / antibacterial composite finishing of cotton fabrics. Background technique [0002] With the rapid development of science and technology and the continuous improvement of people's living standards, people's demand for clothing and other textiles is becoming more and more comfortable, healthy and safe. Cotton fabrics are favored by people because of their cheap and good quality, good hygroscopicity, and comfortable wearing. However, the poor resistance of cotton fabrics to ultraviolet rays and microorganisms makes their further widespread application encounter some challenges. Therefore, it is of certain significance to carry out anti-ultraviolet and antibacterial finishing on cotton fabrics. [0003] At present, there are two main methods of app...

Claims

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Application Information

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IPC IPC(8): D06M11/79D06M13/467D06M11/46D06M101/06
Inventor 王潮霞张文娟
Owner JIANGNAN UNIV
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