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A kind of preparation method of sprayable transparent superamphiphobic coating

A super-amphiphobic and coating technology, which is applied in anti-corrosion coatings, anti-fouling/underwater coatings, coatings, etc., can solve the problem of single substrate selection, the inability to realize the repellence of low surface energy liquids, and limit the industrial application of super-amphiphobic surfaces and other problems, to achieve the effect of simple preparation method

Active Publication Date: 2020-02-04
重庆前沿新材料技术研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, compared with super-hydrophobic coatings, the micro-nano materials for constructing super-amphiphobic coatings have structural specificities. Ordinary nano-materials cannot meet this requirement and cannot achieve the rejection of low surface energy liquids.
At present, this type of coating often needs to prepare special nanostructures by means of micro / nano processing, which is cumbersome and expensive, and cannot be prepared in large areas, and the base material is single and not universal.
In addition, the poor mechanical stability also greatly limits the industrial application of existing superamphiphobic surfaces.

Method used

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  • A kind of preparation method of sprayable transparent superamphiphobic coating
  • A kind of preparation method of sprayable transparent superamphiphobic coating
  • A kind of preparation method of sprayable transparent superamphiphobic coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A. Calcining 0.1 g of polydimethylsiloxane at 400°C for 2 hours to obtain silica aggregates;

[0026] B. First place an open container containing 10 μL perfluorooctyltrichlorosilane in the vapor deposition chamber, then place the silicon dioxide aggregate obtained after calcination in step A in the vapor deposition chamber, and place the vapor deposition chamber inside At room temperature, vacuumize the vapor deposition chamber, control the vacuum pressure at -0.095MPa, and finally let it stand for 1 hour, and finally dry to obtain modified silica aggregates;

[0027] C. Add ethanol to the modified silica aggregate obtained in step B to obtain a suspension with a mass concentration of 1 mg / mL, which is the product.

[0028] The product prepared above is sprayed on the surface of the glass substrate with a pneumatic spray gun. The thickness of the coating is 80 μm, the thickness of the glass substrate is 1 mm, the pressure of the pneumatic spray gun is 0.24 MPa, and the ...

Embodiment 2

[0030] A. Calcining 5 g of polydimethylsiloxane at 800°C for 4 hours to obtain silica aggregates;

[0031] B. Add the silica aggregates obtained in step A to a single-necked round-bottomed flask under nitrogen protection, and add 120 mL of n-hexane and 200 μL of perfluorooctyl disulfide to the single-necked round-bottomed flask. The methyl chlorosilane was mixed and stirred for 6 hours, and the modified silica aggregates were obtained after drying;

[0032] C. Add n-hexane to the silica aggregate modified in step B to obtain a suspension with a mass concentration of 50 mg / mL, which is the product.

[0033] The product prepared above is sprayed on the surface of the glass substrate with a pneumatic spray gun. The thickness of the coating is 80 μm, the thickness of the glass substrate is 1 mm, the pressure of the pneumatic spray gun is 0.24 MPa, and the spray flow rate is 5 mL / min. After spraying, it is dried at room temperature , which is a transparent superamphiphobic coating...

Embodiment 3

[0035] A. Calcining 10 g of polydimethylsiloxane at 1200° C. for 6 hours to obtain silica aggregates;

[0036] B. First place an open container containing 200 μL perfluorodecyltrichlorosilane in the vapor deposition chamber, then place the silicon dioxide aggregate obtained after calcining in step A in the vapor deposition chamber, and put the vapor deposition chamber into At room temperature, vacuumize the vapor deposition chamber, control the vacuum pressure at -0.08MPa, let stand for 4 hours, and finally dry to obtain modified silica aggregates;

[0037] C. Add acetone to the modified silica aggregate obtained in step B to obtain a suspension with a mass concentration of 100 mg / mL, which is the product.

[0038] The product prepared above is sprayed on the surface of the glass substrate with a pneumatic spray gun. The thickness of the coating is 120 μm, the thickness of the glass substrate is 1 mm, the pressure of the pneumatic spray gun is 0.24 MPa, and the spray flow rate...

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Abstract

Belonging to the paint field, the invention in particular relates to a preparation method of a sprayable transparent super-amphiphobic paint. The method includes the steps of: A. calcining 0.1-10g ofa silicon source under a 400-1200DEG C temperature condition for 2-6h to obtain a silica aggregate; B. modifying the silica aggregate obtained in step A by vapor deposition or liquid-phase condensation, and then performing drying to obtain a silica aggregate; and C. adding a solvent into the silica aggregate obtained by drying after modification in step B so as to obtain a suspension solution witha mass concentration of 1-100mg / mL, i.e. the product. The preparation method provided by the invention is simple, and the obtained super-amphiphobic paint has super-hydrophobicity, super-oleophobicity, oil stain resistance, adhesion prevention, and corrosion protection properties, and at the same time has high transparency, friction resistance, green and environmental protection and other excellent properties.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a method for preparing a sprayable transparent superamphiphobic coating. Background technique [0002] With the continuous growth of the production and consumption of silicone materials, the defective silicone resin and leftover materials produced in the synthesis and processing process, as well as the waste silicone resin products formed in the process of scientific research and daily application, are increasing rapidly. Therefore, rational recycling of waste silicone materials is of great significance to energy conservation, environmental protection and sustainable development. [0003] The self-cleaning material imitating lotus leaf has developed rapidly in recent years because of its huge application prospects in the fields of anti-icing, anti-corrosion, anti-adhesion, drag reduction, microfluidics, oil-water separation, and heat transfer. However, most superhydrophobic materials hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D1/00C09D5/08C09D5/16C03C17/25
CPCC03C17/25C03C2217/213C03C2217/76C03C2218/111C03C2218/112C03C2218/116C09D1/00C09D5/08C09D5/1618C09D5/1656
Inventor 邓旭王德辉范岳
Owner 重庆前沿新材料技术研究院有限公司
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