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A kind of super-oleophilic super-hydrophobic coating and its preparation method and application

A super-hydrophobic coating and super-oleophilic technology, which is applied in separation methods, chemical instruments and methods, textiles and papermaking, etc., can solve problems such as limiting the application of super-hydrophobic coatings and complex operation processes, and achieve a wide range of oil-water separation and high-tech Simple, readily available ingredients

Active Publication Date: 2021-05-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual production, some expensive drugs, complex operation process and special equipment are required to limit the application of superhydrophobic coatings.

Method used

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  • A kind of super-oleophilic super-hydrophobic coating and its preparation method and application
  • A kind of super-oleophilic super-hydrophobic coating and its preparation method and application
  • A kind of super-oleophilic super-hydrophobic coating and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of superhydrophobic fiber treatment solution: Add 1 part of titanium dioxide nanoparticles and 2 parts of polyvinyl butyral to a mixed solution of 20ml of ethanol and 30ml of isopropanol, stir magnetically at 800rpm for 2h, and then sonicate Disperse for 30 minutes, and finally add 1 part of silicone resin and 0.1 part of propyltriethoxysilane curing agent into the tetrahydrofuran solvent, and ultrasonicate for 30 minutes to obtain the superhydrophobic fiber treatment solution.

[0031] (2) Preparation of super-hydrophobic fabric: Soak the polyester in the solution for 5 minutes, and finally take out the fabric and dry it at 90°C for 1 hour to obtain a super-hydrophobic fabric.

[0032] figure 1 Optical photographs of water droplet contact angles of superhydrophobic polyester fabrics. The prepared superhydrophobic cotton fabric was repeated 35 times in the process of sticking and peeling off with tape, and the water contact angle remained above 150°, sh...

Embodiment 2

[0034] (1) Preparation of superhydrophobic fiber treatment solution: Add 0.2 parts of silica nanoparticles and 2 parts of polyvinyl butyral to 80 parts of isopropanol solution, stir magnetically at 600 rpm for 1 hour, and then ultrasonically disperse After 30 minutes, add 1 part of silicone resin and 0.05 part of vinyltrimethoxysilane curing agent into the volatile solvent, and ultrasonicate for 20 minutes to obtain the superhydrophobic fiber treatment solution.

[0035] (2) Preparation of superhydrophobic fabric: Soak the pure cotton fabric in the solution for 3 minutes, and finally take out the fabric and dry it at 120° C. for 0.5 hour to obtain the superhydrophobic fabric.

[0036] figure 2 A low-magnification SEM image of a superhydrophobic cotton fabric. The prepared superhydrophobic cotton fabric has a water contact angle of more than 150° after being polished with a weight of 200g on 600-mesh sandpaper for a distance of 240cm, showing good mechanical properties.

Embodiment 3

[0038] (1) Preparation of superhydrophobic fiber treatment solution: Add 0.3 parts of octadecylamine to 40 parts of ethanol and 60 parts of isopropanol solution, stir magnetically at 1000 rpm for 2 hours, then ultrasonically disperse for 15 minutes, and finally mix 1 part of hydrophobic Non-toxic fluorocarbon resin, 0.2 parts of hexamethylene diisocyanate curing agent, add to volatile solvent, ultrasonic for 15 minutes, you can get super-hydrophobic fiber treatment solution.

[0039] (2) Preparation of super-hydrophobic fabric: Soak the pure cotton fabric in the solution for 5 minutes, and finally take out the fabric and dry it at 120° C. for 0.5 hour to obtain the super-hydrophobic fabric. image 3 This is a high-magnification scanning electron microscope image of a superhydrophobic cotton fabric.

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Abstract

The invention discloses a super-oleophilic and super-hydrophobic coating and its preparation method and application. The super-oleophilic and super-hydrophobic coating is mainly made of raw materials in the following proportions by weight: 50-100 parts of volatile organic solvent, slightly hydrophobic 0.1-2 parts of nanoparticles, 0.5-2 parts of water-resistant resin, and 0.05-0.2 parts of curing agent. The contact angle of the textiles prepared by using the coating of the present invention with water is greater than 150°, and the contact angle with oil droplets is close to 0°, and the treated textiles have good mechanical properties, UV resistance, acid and alkali resistance, and have certain self-repairing functions. After repeated oil-water separation experiments, the separation efficiency still remains above 95%. At the same time, the preparation process is simple and easy, the process is easy to control, non-toxic and harmless, and can be used for large-scale production.

Description

technical field [0001] The invention relates to a super-oleophilic and super-hydrophobic coating and its preparation method and application, belonging to the technical field of super-oleophilic and super-hydrophobic coatings. Background technique [0002] Superhydrophobic interface functional material is a kind of material with special wettability. For superhydrophobic materials, water droplets can present a good geometric shape similar to a sphere on its surface and cannot wet its surface. On some super-hydrophobic interfaces, water droplets can roll freely while not infiltrating the surface, and can take away solid impurities such as dust on the surface to achieve a self-cleaning effect, which we call the "lotus leaf effect". [0003] Bionic superhydrophobic coatings meet the requirements of social development, so they have great potential for development. Superhydrophobic surfaces have been applied in many fields, including self-cleaning, anti-corrosion, anti-fog, self-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M15/256D06M15/643D06M11/20D06M11/79D06M13/328D06M11/155D06M11/46D06M11/74B01D17/022
CPCB01D17/02D06M11/155D06M11/20D06M11/46D06M11/74D06M11/79D06M13/328D06M15/256D06M15/643D06M2200/12
Inventor 姜勇周旋江鹏飞张川
Owner SOUTHEAST UNIV
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