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Preparation method of boiling water-resistant super-hydrophobic fabric for oil-water separation

An oil-water separation, super-hydrophobic technology, applied in separation methods, immiscible liquid separation, liquid separation and other directions, can solve the problems of complicated preparation steps, poor practicability and high production cost of super-hydrophobic materials, and achieve good super-hydrophobicity and cost. The effect of low cost and easy availability of raw materials

Active Publication Date: 2017-10-24
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple and convenient method for industrial production of bionic superhydrophobic fabrics, which solves the problems of complicated preparation steps of superhydrophobic materials, high production costs and poor practicability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Preparation method of boiling water-resistant super-hydrophobic fabric for oil-water separation
  • Preparation method of boiling water-resistant super-hydrophobic fabric for oil-water separation
  • Preparation method of boiling water-resistant super-hydrophobic fabric for oil-water separation

Examples

Experimental program
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Effect test

Embodiment 1

[0025] (1) Preparation of super-hydrophobic fabric: Dissolve 2 mL of tetraethyl orthosilicate in 30 mL of absolute ethanol, form a transparent solution under magnetic stirring, and then add 3 mL of 0.2M hydrochloric acid solution, and then add 0.05 g of dopamine powder Add it, stir evenly, add 4mL hexamethyldisilazane, then add 2mL concentrated ammonia water and 2mL water, add the fabric, and then react at room temperature for 24h. After the reaction is completed, take out the fabric and wash it with ethanol and dry it. Thus, the preparation of superhydrophobic fabric is completed. The scanning electron microscope picture of the obtained superhydrophobic fabric is as follows: figure 1 As shown, it can be found that the fabric fibers are tightly packed.

[0026] (2) Superhydrophobic properties of the prepared superhydrophobic fabric: the superhydrophobic fabric has good hydrophobic properties, such as figure 2 As shown, picture (a) is a picture of the silver mirror phenomeno...

Embodiment 2

[0031] Preparation of superhydrophobic fabric: Dissolve 10mL tetraethyl orthosilicate in 50mL absolute ethanol, form a transparent solution under magnetic stirring, after that, add 6mL 0.2M hydrochloric acid solution, and then add 0.1g dopamine powder, After stirring evenly, add 3mL hexamethyldisilazane to it, then add 4mL concentrated ammonia water and 2mL water, add the fabric, then react at room temperature for 24h, after the reaction is completed, take out the fabric and wash it with ethanol and dry it to complete the super Preparation of hydrophobic fabrics.

Embodiment 3

[0033] Preparation of superhydrophobic fabric: Dissolve 1mL tetraethyl orthosilicate in 20mL absolute ethanol, form a transparent solution under magnetic stirring, after that, add 1mL0.1M hydrochloric acid solution to it, and then add 0.05g dopamine powder to it, After stirring evenly, add 2mL hexamethyldisilazane to it, then add 2mL concentrated ammonia water and 2mL water, add the fabric, then react at room temperature for 24h, after the reaction is completed, take out the fabric and wash it with ethanol and dry it to complete the super Preparation of hydrophobic fabrics.

[0034] The present invention includes a one-pot process for preparing superhydrophobic fabrics. The superhydrophobic fabric has good stability, the contact angle to water is greater than 150°, and the rolling angle is less than 10°. It also has good anti-wetting ability for common water-based liquids in daily life, and can last a long time in boiling water. maintain superhydrophobic properties. The prep...

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Abstract

The invention belongs to the technical field of super-hydrophobic materials and particularly relates to a preparation method of a boiling water-resistant super-hydrophobic fabric for oil-water separation. The preparation method comprises the step of preparing the super-hydrophobic fabric by virtue of a one-pot method. The super-hydrophobic fabric has good stability, all contact angles with water are larger than 150 degrees, roll angles are smaller than 10 degrees, and the super-hydrophobic fabric has good anti-infiltration capacity to common water system liquid in life and can preserve the super-hydrophobic performance after being put into boiling water for a long time. The preparation method has the beneficial effect that a preparation process is simple, the raw materials are easily available, and the super-hydrophobic fabric is non-toxic, environmentally friendly, low in cost, strong in stability, applicable to large-area preparation and applicable, applied to daily life and also applicable to the fields of oil-water separation and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of superhydrophobic fabrics, in particular to a method for preparing stable superhydrophobic fabrics that can withstand boiling water and can be used for oil-water separation. Background technique [0002] Superhydrophobic phenomena exist widely in nature, such as the surface of lotus leaves, butterfly wings, and water strider legs. The surface of the superhydrophobic material has a contact angle of more than 150° to water and a rolling angle of less than 10°. Superhydrophobic materials have many unique and excellent surface properties: hydrophobic, self-cleaning, anti-corrosion, anti-icing, anti-fog and other properties, making them have great application prospects in many fields. [0003] Biomimetic superhydrophobic fabric, through the use of polydopamine's super adhesion, combined with superhydrophobic particles, it has good stability and superhydrophobicity, and has good anti-wetting abil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/61D06M13/513D06M11/79B01D17/022
CPCB01D17/02D06M11/79D06M13/513D06M15/61D06M2200/12
Inventor 郭志光郭飞
Owner HUBEI UNIV
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