Method for superhydrophobic finishing of textile

A textile and super water-repellent technology, applied in textiles and papermaking, fiber treatment, fiber type, etc., can solve the problems of super water-repellent textile patents and literatures that have not been seen, and achieve the effect of soft hand feeling, high efficiency and safe environment

Active Publication Date: 2011-11-23
TAICANG BAONI IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As far as the inventors of this patent know, there are no patents and documents on the preparation of super water-repellent textiles in a completely aqueous system based on sol-gel technology.

Method used

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  • Method for superhydrophobic finishing of textile
  • Method for superhydrophobic finishing of textile
  • Method for superhydrophobic finishing of textile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 0.5 g of 37% hydrochloric acid by mass was added into 500 g of deionized water, and stirred at room temperature for 10 minutes. Then 10 g of tetraethyl orthosilicate was added dropwise, stirring was continued for 60 minutes, and the solution was left to stand for 15 minutes to obtain a slightly bluish, transparent silica hydrosol. The Tyndall effect of the hydrosol was observed in the Tyndall phenomenon tester, and the average particle diameter of the hydrosol measured by Zetasizer Nano ZS nanometer particle size analyzer was 65.3nm. Cotton fabric (poplin, 40 s ×40 s / 133×72 (purchased from Hangzhou Tianrui Printing and Dyeing Co., Ltd.) was dipped twice and rolled twice in the prepared hydrosol, with a liquid retention rate of 80%, and dried at 120°C for 2 minutes.

[0051] 17.5g polydimethylsiloxane emulsion (TW-304, purchased from T-Win (SHANGHAI) Trading Ltd), 2.5g hydroxyl polydimethylsiloxane emulsion (YMR7212, purchased from MOMENTIVE Performance Materials), 2g...

Embodiment 2

[0056] Add 0.4 g of hydrochloric acid with a concentration of 37% by mass to 500 g of deionized water, and stir at room temperature for 10 minutes. Then 10 g of methyl orthosilicate was added dropwise, continued to stir for 60 minutes, and stood still for 15 minutes to obtain a slightly bluish, transparent silica hydrosol. The Tyndall effect of the hydrosol was observed in the Tyndall phenomenon tester, and the average particle diameter of the hydrosol measured by Zetasizer Nano ZS nanometer particle size analyzer was 72.1 nm. Cotton fabric (poplin, 40 s ×40 s / 133×72 (purchased from Hangzhou Tianrui Printing and Dyeing Co., Ltd.) was dipped twice and rolled twice in the prepared hydrosol, with a liquid retention rate of 80%, and dried at 120°C for 2 minutes.

[0057] Add 30g of polydimethylsiloxane emulsion (TW-304, purchased from T-Win (SHANGHAI) Trading Ltd) and 4g of titanium tetrachloride into 500g of deionized water, and stir evenly to prepare a finishing solution. Th...

Embodiment 3

[0062] 4 g of ammonia water with a concentration of 28% by mass was added to 500 g of deionized water, and stirred at room temperature for 10 minutes. Then, 12 g of tetraethyl orthosilicate was added dropwise, stirring was continued for 120 minutes, and the solution was allowed to stand for 30 minutes to obtain a slightly bluish, transparent silica hydrosol. The Tyndall effect of the hydrosol was observed in the Tyndall phenomenon tester, and the average particle diameter of the hydrosol measured by Zetasizer Nano ZS nanometer particle size analyzer was 98.4nm. Cotton fabric (poplin, 40 s ×40 s / 133×72 (purchased from Hangzhou Tianrui Printing and Dyeing Co., Ltd.) was dipped twice and rolled twice in the prepared hydrosol, with a liquid retention rate of 80%, and dried at 120°C for 2 minutes.

[0063] Add 12.5g of dodecyltriethoxysiloxane emulsion, 7.5g of hydroxyl polydimethylsiloxane emulsion (YMR7212, MOMENTIVE Performance Materials), 2g of titanium tetrachloride into 50...

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Abstract

The invention provides a method for superhydrophobic finishing of textile, comprising the following steps of: (1) padding the textile in silicon dioxide hydrosol, and drying; and (2) padding the textile treated in the step (1) in water emulsion of siloxane, polysiloxane and hydroxyl polydimethyl siloxane or the water emulsion of a mixture of the siloxane, the polysiloxane and hydroxyl polydimethyl siloxane in the presence of a catalytic synergistic agent, preliminarily drying and baking. The contact angle between the fabric treated with the method and water is greater than 150 degrees; the textile has the superhydrophobic performance; in the processing flow of the method disclosed by the invention, an organic solvent is prevented from being used from beginning to end; the fabric is completely treated in a waterborne system; the processing method is environment-friendly and is easy for industrialization; and the used raw materials have wide sources and low cost.

Description

Technical field: [0001] The invention belongs to the field of super-water-repellent finishing in functional finishing of textiles, in particular to an environmentally friendly, low-cost, high-efficiency and easy-to-industrialize textile super-water-repellent finishing method. Background technique: [0002] Usually, the contact angle of 90° is used as the boundary. When the contact angle of water droplets on the solid surface is less than 90°, the surface is called a hydrophilic surface, and when the contact angle is greater than 90°, it is called a water-repellent surface. Super water-repellent surface means that the static contact angle of solid surface to water is above 150° [Nakajima A, Fujishima A. Adv Mater, 1999, 11: 1365]. Since the Japanese scholar OndaT et al. [Onda T, Shibuichi S, SatohN, Tsujii K.Langmuir.1996, 12: 2125] successfully prepared a super water-repellent solid surface for the first time in 1996, its potential application prospects have become the focus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/79D06M13/513D06M15/643D06M101/06D06M101/32
Inventor 李正雄顾喆栋
Owner TAICANG BAONI IND CO LTD
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