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Silicon carbide nanowire hydrophobic coating and preparation method thereof

A technology of silicon carbide nanowires and hydrophobic coatings, applied in chemical instruments and methods, coatings, carbon compounds, etc., can solve problems such as complex preparation methods, easy cracking, and thick coatings

Inactive Publication Date: 2019-01-04
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not use sintering technology, the resulting coating is thicker, prone to cracking, and the preparation method is more complicated

Method used

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  • Silicon carbide nanowire hydrophobic coating and preparation method thereof
  • Silicon carbide nanowire hydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) The substrate was ultrasonically cleaned with acetone, absolute ethanol and deionized water for 10 minutes in sequence to remove dust on the surface, and then dried with nitrogen gas for later use;

[0018] (2) Grind 1.2 g of polycarbosilane into powder, heat it in an oven at 100°C for 3 hours, and dry it for later use;

[0019] (3) Place the polycarbosilane in (2) evenly in the ceramic crucible, place the ceramic crucible in the high temperature zone of the tube furnace, place the substrate in the tail of the tube furnace; vacuumize the tube furnace, and pass Argon, to ensure the normal pressure in the tube furnace, then raise the tube furnace to 1200 °C at 10 °C / min, keep it for 2 hours, then cool to room temperature with the furnace, open the tube furnace to prepare silicon carbide nanowires on the substrate Hydrophobic coating.

Embodiment 2

[0021] (1) The substrate was ultrasonically cleaned with acetone, absolute ethanol and deionized water for 10 minutes in sequence to remove dust on the surface, and then dried with nitrogen gas for later use;

[0022] (2) Grind 0.8 g of polycarbosilane into powder, heat in an oven at 100°C for 3 hours, and dry for later use;

[0023] (3) Place the polycarbosilane in (2) evenly in the ceramic crucible, place the ceramic crucible in the high temperature zone of the tube furnace, place the substrate in the tail of the tube furnace; vacuumize the tube furnace, and pass Argon, to ensure the normal pressure in the tube furnace, then raise the tube furnace to 1100 °C at 5 °C / min, keep it for 2.5 hours, then cool to room temperature with the furnace, open the tube furnace to prepare silicon carbide nano Wire hydrophobic coating.

Embodiment 3

[0025] (1) The substrate was ultrasonically cleaned with acetone, absolute ethanol and deionized water for 10 minutes in sequence to remove dust on the surface, and then dried with nitrogen gas for later use;

[0026] (2) Grind 1.0 g of polycarbosilane into powder, heat it in an oven at 100°C for 3 hours, and dry it for later use;

[0027] (3) Place the polycarbosilane in (2) evenly in the ceramic crucible, place the ceramic crucible in the high temperature zone of the tube furnace, place the substrate in the tail of the tube furnace; vacuumize the tube furnace, and pass Argon, to ensure the normal pressure in the tube furnace, then raise the tube furnace at 8 °C / min to 1150 °C, keep it for 3 hours, then cool to room temperature with the furnace, open the tube furnace to prepare silicon carbide nanowires on the substrate Hydrophobic coating.

[0028] The silicon carbide nanowire hydrophobic coating that embodiment 1 obtains is characterized, and test result is as follows Fi...

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Abstract

The invention discloses a silicon carbide nanowire hydrophobic coating and a preparation method thereof. The silicon carbide nanowire hydrophobic coating is characterized in that the silicon carbide nanowire hydrophobic coating is composed of silicon carbide nanowires with the diameter of 30 nm to 100 nm, the thickness ranges from 0.5 mm to 1.0 mm, and the hydrophobic angle is 150 degrees. Precursor polycarbosilane powder is subjected to pyrolysis at the temperature of 1,100 DEG C to 1,200 DEG C and deposited on a matrix, and the silicon carbide nanowire hydrophobic coating is obtained. The silicon carbide nanowire hydrophobic coating is prepared on the matrix through a one-step method, the preparation process is simple, and the silicon carbide nanowire hydrophobic coating has the advantages of being super-hydrophobic, ultralight and ultrathin and achieving self-cleaning, and can be applied in the hostile environment such as corrosion for a long time.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a silicon carbide nanowire hydrophobic coating and a preparation method thereof. Background technique [0002] Due to its special surface wettability and low surface energy, super-hydrophobic coatings have multi-functional comprehensive properties such as anti-icing, anti-fouling, stealth, oil-water separation, etc. It has good application potential and necessary research space in daily light industry and daily life. Especially in the field of aerospace materials, superhydrophobic coatings have more potential for development. The self-cleaning performance of the super-hydrophobic coating can take away the pollutants on the surface of the aircraft through the flow of liquid, which can reduce the weight of the aircraft to a certain extent, reduce the carrying and use of fuel, improve the safety factor, and then achieve energy saving and emission reduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00B82Y30/00B82Y40/00C01B32/963
CPCB82Y30/00B82Y40/00C09D1/00C01B32/963
Inventor 李斌斌毛帮笑黄海泉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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