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A wear-resistant superhydrophobic textile coating and preparation method thereof

A textile coating, textile technology, applied in textiles and papermaking, wear-resistant fibers, liquid-repellent fibers, etc.

Active Publication Date: 2020-04-07
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems existing in the prior art, the present invention provides a wear-resistant super-hydrophobic textile coating and a preparation method to solve the poor mechanical wear resistance of the existing super-hydrophobic textile coating, and finally obtain a wear-resistant super-hydrophobic Textile Coating

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  • A wear-resistant superhydrophobic textile coating and preparation method thereof
  • A wear-resistant superhydrophobic textile coating and preparation method thereof

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preparation example Construction

[0022] The preparation method of abrasion-resistant superhydrophobic textile coating comprises the following steps:

[0023] a. Preparation of polyvinylidene fluoride coating solution:

[0024] Heat and dissolve polyvinylidene fluoride (PVDF) into a mixture of N,N-dimethylacetamide (DMAc) and dioctyl phthalate (DOP), where N,N-dimethylacetamide The mass ratio to dioctyl phthalate (DOP) is 1:1, and the mass percentage of polyvinylidene fluoride is 10%-15%;

[0025] b. Preparation of wear-resistant superhydrophobic textile coating:

[0026] Immerse the textile (such as polyester) in the polyvinylidene fluoride coating solution at a temperature of 80-100 ° C for 5-10 minutes, so that the textile is soaked in the coating solution; then, take out the textile soaked in the polyvinylidene fluoride coating solution And put it in a large amount of ethanol solution for 8-15h, so that the polyvinylidene fluoride coating liquid undergoes non-solvent phase transition on the surface of th...

Embodiment 1

[0029] Dissolve PVDF in a mixed solvent with a mass ratio of DMAc and DOP of 1:1 to obtain a polyvinylidene fluoride coating solution. The mass percentage of PVDF in the polyvinylidene fluoride coating solution is 12%, and stir at 85°C for 4h to form a heat The polyvinylidene fluoride coating solution; then, immerse the polyester textile in the aforementioned polyvinylidene fluoride coating solution for 5 minutes, so that the textile is soaked by the coating solution, and then, the polyester fabric soaked with the polyvinylidene fluoride coating solution After taking out the textile, put it into a large amount of ethanol solution, take it out and dry it after 12 hours, and obtain a superhydrophobic textile coating treated with polyvinylidene fluoride. The contact angle of the obtained textile surface is 160.4°±2.4°, and the rolling angle is less than 7°. , after 2000 frictions, the contact angle of the textile surface is still greater than 150°, which has good superhydrophobici...

Embodiment 2

[0031] Dissolve PVDF in a mixed solvent with a mass ratio of DMAc and DOP of 1:1 to obtain a polyvinylidene fluoride coating solution. The mass percentage of PVDF in the polyvinylidene fluoride coating solution is 12%, and stir at 90°C for 4h to form a heat The polyvinylidene fluoride coating solution; then, immerse the polyester textile in the aforementioned polyvinylidene fluoride coating solution for 5 minutes, so that the textile is soaked by the coating solution, and then, the polyester fabric soaked with the polyvinylidene fluoride coating solution After taking out the textile, put it into a large amount of ethanol solution, take it out and dry it after 12 hours, and obtain a superhydrophobic textile coating treated with polyvinylidene fluoride. The contact angle of the obtained textile surface is 159.7°±3.5°, and the rolling angle is less than 7°. , after 2000 frictions, the contact angle of the textile surface is still greater than 150°, which has good superhydrophobici...

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Abstract

The invention provides a wear-resisting super-hydrophobic textile coating and a preparation method. The preparation method comprises the following steps: firstly, putting a textile into polyvinylidene fluoride coating liquid which is obtained by taking N,N-dimethylacetylamide and dioctyl phthalate as a mixed solvent, and dissolving, so as to enable the textile to be impregnated by the polyvinylidene fluoride coating liquid; secondly, taking a terylene textile which is impregnated with the polyvinylidene fluoride coating liquid out, putting the terylene textile into an ethanol solution with a large amount and impregnating for 12h, so as to enable the polyvinylidene fluoride coating liquid to be subjected to non-solvent-phase conversion on the surface of the textile to form a rough coating; finally, taking out the textile and drying to obtain the super-hydrophobic textile coating treated by polyvinylidene fluoride. After the super-hydrophobic textile coating prepared by the preparation method is subjected to 2000 times of rubbing, acid / alkali solution impregnation for 24h and ultraviolet radiation for 100h, a water drop contact angle is still greater than 150 degrees, and excellent super-hydrophobic stability is performed.

Description

【Technical field】 [0001] The invention belongs to the technical field of functionalized textiles, and in particular relates to a wear-resistant superhydrophobic textile coating and a preparation method thereof. 【Background technique】 [0002] A superhydrophobic surface refers to a surface with a contact angle of water on a solid surface greater than 150° and a rolling angle of less than 10°. In recent years, as the research on new hydrophobic materials has continuously achieved remarkable results in many fields such as chemical industry, self-cleaning, clothing, fluid drag reduction, and mechanical anticorrosion, the research on superhydrophobic surfaces has become a hot spot now, and many different preparations Raw materials and novel techniques have been developed to varying degrees. At present, there are two main ways to prepare superhydrophobic surfaces: (1) constructing rough structures on low surface energy substances; (2) modifying low surface energy substances on ro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/256D06M13/144D06M101/32
CPCD06M13/144D06M15/256D06M2101/32D06M2200/12D06M2200/35
Inventor 薛朝华李幸安秋凤贾顺田
Owner SHAANXI UNIV OF SCI & TECH