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Preparation method for anisotropic super-hydrophobic surface material on bionic paddy blade surface dot matrix

A super-hydrophobic surface and anisotropic technology, applied in metal processing and other directions, can solve the problems of many steps in the preparation process, insufficient precision control, toxicity of chemical reagents, etc., and achieve the effect of simple method, high precision and stable surface performance

Inactive Publication Date: 2021-06-04
HUBEI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the preparation characteristics of the bionic rice leaf lattice anisotropic microstructure, and overcomes the partial deficiencies of some existing preparation techniques, such as the use of chemical methods to prepare micro-nano structures with many steps in the preparation process, time-consuming, and precision control. Not enough, and the chemical reagents used are often somewhat toxic

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0025] (1) Pretreatment of substrate Teflon polymer material

[0026] Cut the Teflon polymer material with a thickness of 2mm into square pieces with a side length of 1cm×1cm, and process 4 samples at the same time, and then put them in toluene, absolute ethanol and deionized water in sequence, and then use an ultrasonic cleaner Ultrasonic cleaning was performed in the above solvents for 6 min. The organic and inorganic pollutants on the surface of the material are removed by treatment, and then the treated sample is put into an oven and dried at 50°C for later use;

[0027] (2) Graphic design and drawing

[0028] Use Marking Mate to draw the lattice anisotropic structure, the spacing in the parallel direction is 0.2mm, and the spacing in the vertical direction is 0.27mm, to ensure that the parallel and vertical directi...

Embodiment 2

[0032] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0033] (1) Pretreatment of substrate Teflon polymer material

[0034] Cut the Teflon polymer material with a thickness of 2mm into square pieces with a side length of 1cm×1cm, and process 6 samples at the same time, then put them in acetone, absolute ethanol and deionized water in sequence, and then use an ultrasonic cleaner Ultrasonic cleaning was performed in the above solvents for 6 min. The organic and inorganic pollutants on the surface of the material are removed by treatment, and then the treated sample is put into an oven and dried at 60°C for later use;

[0035] (2) Graphic design and drawing

[0036] Use Marking Mate to draw the anisotropic structure of the lattice, the spacing in the parallel direction is 0.2mm, and the spacing in the vertical direction is 0.12mm, and ensure that the parallel and vertical dir...

Embodiment 3

[0040] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0041] (1) Pretreatment of substrate Teflon polymer material

[0042] Cut the Teflon polymer material with a thickness of 2mm into a circular piece with a diameter of 2cm, and process 4 samples at the same time, and then put them in toluene, absolute ethanol and deionized water in sequence, and then use an ultrasonic cleaning machine on the above Ultrasonic cleaning in solvent for 10 min respectively. Remove the organic and inorganic pollutants on the surface of the material through treatment, then put the treated sample into the oven, dry it at 70°C, and set it aside;

[0043] (2) Graphic design and drawing

[0044] Use Marking Mate to draw the anisotropic structure of the lattice, the spacing in the parallel direction is 0.2mm, and the spacing in the vertical direction is 0.25mm, to ensure that the parallel and vertic...

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Abstract

The invention relates to a preparation method for an anisotropic super-hydrophobic surface material on a bionic paddy blade surface dot matrix. The method comprises the steps in sequence: (1) preparing a Teflon high molecular material and cleaning and drying the same; (2) drawing a dot matrix anisotropic structure by using Marking Mat and drawing a series of paddy blade emulating anisotropic structures; (3) setting equipment process parameters of laser equipment, setting a spot diameter at 0.1-0.5 mm, a carving speed at 10-100 mm / s, wherein a carving mode is horizontal bidirectional, the power is 1%-10% and the carving number of times is 1-10 times; and (4) placing the pre-treated Teflon high molecular material on a sample table of the laser equipment, controlling the laser equipment to process the anisotropic paddy blade structure picture on the Teflon high molecular material by using the Marking Mate to obtain the directional wetted super-hydrophobic surface material with the anisotropic surface. The method is simple, quick to prepare the structure and free of environmental pollution. The prepared anisotropic super-hydrophobic surface shows a graded structure like a paddy blade surface, shows anisotropic wettability and is suitable for industrial batch production.

Description

technical field [0001] The invention belongs to the field of material surface preparation, and in particular relates to a method for preparing a bionic rice leaf surface lattice anisotropic super-hydrophobic surface material. Background technique [0002] Wetting performance is one of the important properties of the material surface, which is generally measured by the contact angle of water droplets on the surface. If the contact angle is greater than 150°, this type of surface has a bionic structure similar to lotus leaves, rice leaves, etc., showing properties such as non-sticking to water and self-cleaning, and has a wide range of applications, such as anti-icing, anti-pollution, and anti-corrosion , oil-water separation, fluid drag reduction, etc. have potential applications. These characteristics and applications have aroused the research interest of many scientists and engineers, so the research and development of such surfaces in self-cleaning coatings, impermeable t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B26D3/08B26D5/00B26F3/16
CPCB26D3/085B26D5/005B26F3/16
Inventor 马福民卫世超陈跃李文颜玉影付勇军廖庆玲
Owner HUBEI POLYTECHNIC UNIV