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Fluorosilicone material for super-hydrophobic coating and its preparation method and use method

A technology of a super-hydrophobic coating and an application method, applied in the field of fluorosilicon materials and their preparation, can solve the problem of high preparation cost of the coating, and achieve the effects of good hydrophobic effect, simple preparation method and good application prospect.

Inactive Publication Date: 2013-07-31
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Such coatings also exhibit high transparency in most UV-VIS wavelength ranges, but these coatings are expensive to prepare

Method used

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  • Fluorosilicone material for super-hydrophobic coating and its preparation method and use method
  • Fluorosilicone material for super-hydrophobic coating and its preparation method and use method
  • Fluorosilicone material for super-hydrophobic coating and its preparation method and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A fluorosilicon material for superhydrophobic coating, which is prepared from fluorinated nano-silica sols with average particle diameters of 150nm and 400nm respectively.

[0030] The above-mentioned preparation method for the fluorosilicon material of superhydrophobic coating, it comprises the steps:

[0031] (1) Preparation of fluorinated nano-silica sol A with the first particle size: Weigh 3 mL of tetraethyl orthosilicate, 100 mL of absolute ethanol, H 2 O 0.5mL, 1H, 1H, 2H, 2H-perfluorooctyltriethoxysilane 1mL, diethyldichlorosilane 1mL, add ammonia water 1mL, stir at reaction temperature 25°C for 1h, and the obtained average particle size is 150nm fluorinated nano silica sol A;

[0032] (2) Preparation of fluorinated nano-silica sol B with the second particle size: Weigh 3 mL of tetraethyl orthosilicate, 100 mL of absolute ethanol, H 2 O 0.5mL, 1H,1H,2H,2H-perfluorooctyltriethoxysilane 1mL, diethyldichlorosilane 1mL mixed, add ammonia water 1mL, stir at reactio...

Embodiment 2

[0040] A fluorosilicon material for superhydrophobic coating, which is prepared from fluorinated nano-silica sols with average particle diameters of 50nm and 250nm respectively.

[0041] The above-mentioned preparation method for the fluorosilicon material of superhydrophobic coating, it comprises the steps:

[0042] (1) Preparation of fluorinated nano-silica sol A with the first particle size: Weigh 1 mL of tetraethyl orthosilicate, 60 mL of methanol, H 2 O 0.1mL, 1H,1H,2H,2H-perfluorooctyltriethoxysilane 0.1mL, diphenyldichlorosilane 0.1mL, add ammonia water 1mL, stir at reaction temperature 30°C for 1h to obtain the average particle size Fluorinated nano-silica sol A with a diameter of 50nm;

[0043] (2) Prepare fluorinated nano-silica sol B of the second particle size: weigh 3 mL of tetraethyl orthosilicate, 50 mL of methanol, H 2 O 0.5mL, 1H,1H,2H,2H-perfluorooctyltriethoxysilane 1mL, diphenyldichlorosilane 0.5mL after mixing, add ammonia water 1mL, stir at the reaction...

Embodiment 3

[0050] A fluorosilicon material for superhydrophobic coating, which is prepared from fluorinated nano-silica sols with average particle diameters of 60nm and 300nm respectively.

[0051] The above-mentioned preparation method for the fluorosilicon material of superhydrophobic coating, it comprises the steps:

[0052] (1) Preparation of fluorinated nano-silica sol A with the first particle size: Weigh 3 mL of tetrahydrofuran, 100 mL of tetrahydrofuran, and 2 O 0.5mL, 1H,1H,2H,2H-perfluorooctyltriethoxysilane 0.5mL, diphenyldichlorosilane 0.5mL, add ammonia water 1mL, stir at reaction temperature 30°C for 3h to obtain the average particle size Fluorinated nano-silica sol A with a diameter of 60nm;

[0053] (2) Preparation of fluorinated nano-silica sol B with the second particle size: Weigh 5 mL of tetrahydrofuran, 100 mL of tetrahydrofuran, and 2 O 0.5mL, 1H,1H,2H,2H-perfluorooctyltriethoxysilane 2mL, diphenyldichlorosilane 0.5mL after mixing, add glacial acetic acid 1mL, sti...

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Abstract

The invention relates to a fluorosilicone material for a super-hydrophobic coating and its preparation method and use method. The fluorosilicone material is prepared from fluorinated nano-silica and / or nano-titanium dioxide sol having two particle sizes. The fluorinated nano-silica or nano-titanium dioxide sol having the small particle size has the average particle size of 10 to 150nm. The fluorinated nano-silica or nano-titanium dioxide sol having the large particle size has the average particle size of 200 to 500nm. Through utilization of fluorine-containing siloxane in silica and / or titanium dioxide preparation, surface energy of the fluorosilicone material as a coating is effectively reduced. Through utilization of non-fluorinated dichlorodialkylsilane, coating surface hydrophily is partly reduced and a fluorine-containing silane use amount and a cost are reduced.

Description

technical field [0001] The invention relates to the field of materials, mainly to the technical field of super-hydrophobic coatings, in particular to a fluorosilicon material used for super-hydrophobic coatings, a preparation method and an application method thereof. Background technique [0002] Surface wettability is closely related to many physicochemical processes, such as adhesion, adsorption, lubrication, dispersion, and friction. Surface wettability has important applications in many fields such as coating, catalysis, oil extraction, mineral processing, lubrication, waterproofing and biomedical materials. Therefore, the research and development of materials with special surface wettability is of great significance to deepen the understanding of surface phenomena, expand the application range of materials and improve the application performance of materials. Due to its low surface energy, fluorosilicon material can greatly reduce the surface energy of the substrate, s...

Claims

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Application Information

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IPC IPC(8): C09D1/00B05D5/08
Inventor 许祖勋赵丽王世敏董兵海卢红兵万丽方章建
Owner HUBEI UNIV
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