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Artificial cultivation method of super-amphiphobic self-cleaning surface fine nano-structure

A technology of nanostructures and planting methods, applied in nanotechnology for materials and surface science, devices for coating liquids on surfaces, nanotechnology, etc., can solve problems such as inapplicable superamphiphobic surfaces, and achieve good chemical stability non-toxicity, good superhydrophobicity, and simple process

Active Publication Date: 2014-11-26
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above methods are suitable for preparing large-area superamphiphobic surfaces.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] A method for artificially planting fine nanostructures on a super-amphiphobic self-cleaning surface is carried out as follows:

[0025] Preparation of rod-shaped nanocellulose by acid hydrolysis: Disperse the fiber raw material in 50wt% sulfuric acid aqueous solution, stir and react at 50°C for 30min, add 500g ice cubes to terminate the reaction and let the system cool down to room temperature. After centrifugation and washing until neutral, the precipitate was dialyzed with deionized water for one week to remove impurities, and then freeze-dried to obtain rod-shaped nanocellulose nanofibrils.

[0026] Artificial planting of nanocellulose nanofibrils: choose an aluminum alloy plate with a thickness of 1mm and a width of 1000mm as the base material, and coat the cured epoxy resin adhesive on the surface of the aluminum alloy plate according to the coating amount of 80g / m2; The nanocellulose nanofibrils were artificially planted on the surface of the aluminum alloy plate ...

specific Embodiment approach 2

[0029] A method for artificially planting fine nanostructures on a super-amphiphobic self-cleaning surface is carried out as follows:

[0030] Preparation of rod-shaped nanocellulose by acid hydrolysis: Disperse the fiber raw material in 50wt% sulfuric acid aqueous solution, and stir and react at 20°C for 60min. After centrifugation and washing until neutral, the precipitate was dialyzed with deionized water for one week to remove impurities, and then freeze-dried to obtain rod-shaped nanocellulose nanofibrils.

[0031] Artificial planting of nanocellulose nanofibrils: select alloy steel with a thickness of 0.5mm and a width of 1000mm as the base material, and apply a cured epoxy resin adhesive of 100g / m 2 Coated on the surface of alloy steel; then, the nanocellulose nanofibrils were placed at a voltage of 50kV, a current of 0.5mA, and a flocking amount of 12g / m 2 Artificially planted on the surface of the alloy steel sheet under the conditions.

[0032] Nanofibril flocking ...

specific Embodiment approach 3

[0034] A method for artificially planting fine nanostructures on a super-amphiphobic self-cleaning surface is carried out as follows:

[0035] Acid hydrolysis to prepare rod-shaped nanocellulose: Disperse the fiber raw material in 64wt% sulfuric acid aqueous solution, stir and react at 50°C for 60min, add 500g ice cubes to terminate the reaction and let the system cool down to room temperature. After centrifugation and washing until neutral, the precipitate was dialyzed with deionized water for one week to remove impurities, and then freeze-dried to obtain rod-shaped nanocellulose nanofibrils.

[0036] Artificial planting of nanocellulose nanofibrils: choose a zinc alloy plate with a thickness of 1mm and a width of 1000mm as the substrate, and apply a cured epoxy resin adhesive of 90g / m 2 Coated on the surface of the zinc alloy sheet; then the nanocellulose nanofibrils were placed at a voltage of 35kV, a current of 3mA, and a flocking amount of 10g / m 2 Artificially planted on...

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Abstract

An artificial cultivation method of a super-amphiphobic self-cleaning surface fine nano-structure utilizes the main body of surface fine nano-structure with super-amphiphobic property as a rodlike nano cellulose, controllable ordered directional planting of nano filaments of the rodlike nano cellulose is realized on the surface of a substrate in an electrostatic flocking manner, and the flocked surface is modified by a fluorine-containing reagent and self-assembled to form a layer of fluorine-containing long-chain alkylsilane molecules so as to obtain the super-amphiphobic self-cleaning surface fine nano-structure. The surface of the prepared nano cellulose and nano filament fine nano-structure has remarkable super-amphiphobic and super-oleophobic properties, as well as favorable chemical stability and self-cleaning capability, and the fine nano-structure has a broad application prospect in medicine, fine chemical engineering, textile, construction material and other aspects, and provides new thoughts for efficient utilization of wood and other recyclable resources.

Description

technical field [0001] The invention relates to a fine nanostructure material with superhydrophobic and superoleophobic self-cleaning properties and an artificial planting method thereof. Background technique [0002] Superamphiphobic surfaces generally refer to surfaces with contact angles greater than 150° for both water and oil phases. In 1997, German biologists Neinhuis and Barthlott studied electron microscope pictures on the surface of lotus leaves and found that there were fine micro-nano structure papillae on the surface of lotus leaves. The presence of hydrophobic waxes together causes the lotus leaf to have a super-amphiphobic self-cleaning effect of "coming out of the mud without staining". Based on many excellent properties such as anti-pollution, anti-rain and snow, anti-corrosion, anti-oxidation and surface self-cleaning caused by the super-amphiphobic phenomenon, super-amphiphobic surfaces are widely used in textiles, traffic signals, ship shells, space shutt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/02B05D5/08B05D7/24B82Y30/00
Inventor 胡云楚梁金王洁黄自知田梁材袁利萍卿彦吴义强
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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