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Super-hydrophobic coating, preparation method and application of super-hydrophobic coating

A technology of super-hydrophobic coating and application method, applied in the field of super-hydrophobic coating and the preparation of the above-mentioned super-hydrophobic coating, can solve problems such as poor durability, and achieve the effects of good durability, stable hydrophobic performance and simple method

Inactive Publication Date: 2017-11-24
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in long-term use, it is found that most of the existing superhydrophobic self-cleaning coatings have poor durability.

Method used

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  • Super-hydrophobic coating, preparation method and application of super-hydrophobic coating
  • Super-hydrophobic coating, preparation method and application of super-hydrophobic coating
  • Super-hydrophobic coating, preparation method and application of super-hydrophobic coating

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Effect test

preparation example Construction

[0047] A kind of preparation method of superhydrophobic coating of the present invention, specifically implement according to the following steps:

[0048] Step 1. Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor.

[0049] Step 2. Weighing dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA) treated in step 1 and Azobisisobutyronitrile and sodium bisulfite;

[0050] Among them, dodecafluoroheptyl methacrylate (DFMA) and glycidyl methacrylate (GMA) are used as raw materials, and azobisisobutyronitrile and sodium bisulfite are used as initiators.

[0051] Step 3. Add all the materials weighed in step 2 into the container together, then add tetrahydrofuran into the container, seal the container and pass nitrogen gas for 45min to 55min, the purpose is to discharge the oxygen in the container;

[0052] Wherein, tetrahydrofuran is a solvent, nitrogen is a protectiv...

Embodiment 1

[0072] Preparation method of superhydrophobic coating:

[0073] Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh 10% methacrylic acid respectively according to the molar ratio of 9:1:0.06:0.1 Difluoroheptyl ester (DFMA), treated glycidyl methacrylate (GMA), and azobisisobutyronitrile and sodium bisulfite; add all weighed materials together to a round-bottomed flask, and add to the round-bottomed flask Add tetrahydrofuran to the flask, seal the round-bottomed flask and ventilate nitrogen for 45 minutes to discharge the oxygen in the round-bottomed flask; place the whole round-bottomed flask in an oil bath constant temperature pot with a temperature of 65°C and heat it under the protection of nitrogen Turn on the magnetic stirring for 35 minutes to fully react the dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA), azobisisobutyronitrile and sodium bis...

Embodiment 2

[0080] Preparation method of superhydrophobic coating:

[0081] Take glycidyl methacrylate (GMA), and filter the glycidyl methacrylate (GMA) with an alumina chromatography column to remove the polymerization inhibitor; weigh 10% methacrylic acid according to the molar ratio of 8:1:0.05:0.15. Difluoroheptyl ester (DFMA), treated glycidyl methacrylate (GMA), and azobisisobutyronitrile and sodium bisulfite; add all weighed materials together to a round-bottomed flask, and add to the round-bottomed flask Add tetrahydrofuran to the flask, seal the round-bottom flask and pass nitrogen gas for 55 minutes, and discharge the oxygen in the round-bottom flask; place the whole round-bottom flask in an oil bath constant temperature pot with a temperature of 75°C and heat it under the protection of nitrogen. Turn on the magnetic stirring for 45 minutes to fully react the dodecafluoroheptyl methacrylate (DFMA), glycidyl methacrylate (GMA), azobisisobutyronitrile and sodium bisulfite in the r...

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Abstract

The invention discloses a super-hydrophobic coating. The super-hydrophobic coating is a polymer which is formed by the reaction of dodecafluoroheptyl methacrylate, methacrylic acid glycidol, azodiisobutyronitrile and sodium hydrogen sulfite. The polymer is PGMA-r-PDFMA. The invention also discloses a preparation method and application of the super-hydrophobic coating. The super-hydrophobic coating disclosed by the invention has high durability in use; the preparation method for the super-hydrophobic coating disclosed by the invention is simple; the super-hydrophobic coating is simply applied; a super-hydrophobic coating layer can be formed on the fabric surface.

Description

technical field [0001] The invention belongs to the technical field of hydrophobic coatings and relates to a super-hydrophobic coating (polymer PGMA-r-PDFMA). The invention also relates to a preparation method and application of the super-hydrophobic coating. Background technique [0002] The wettability of a liquid on the surface of an object is measured by the static contact angle of the surface. When the static contact angle of the surface of the object is higher than 150°, the surface of the object is called a superhydrophobic surface. The surface wettability of an object is mainly determined by the microstructure and chemical composition. There are two main ways to artificially prepare superhydrophobic surfaces: (1) construct rough results on the solid surface by physical polishing or chemical experiments; (2) graft low chemical energy molecules on the solid surface. [0003] In recent years, superhydrophobic surfaces have attracted great attention from various industr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/16C08F220/22C08F220/32C08F2/00D06N3/04
CPCC08F2/00C08F220/22C09D133/16D06N3/047D06N2209/142D06N2209/143D06N2209/16C08F220/325
Inventor 曹从军马雅玲侯成敏
Owner XIAN UNIV OF TECH
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