Preparation method of bionic rice leaf surface lattice anisotropy super-hydrophobic surface material

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

Inactive Publication Date: 2020-03-24
HUBEI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Preparation method of bionic rice leaf surface lattice anisotropy super-hydrophobic surface material
  • Preparation method of bionic rice leaf surface lattice anisotropy super-hydrophobic surface material
  • Preparation method of bionic rice leaf surface lattice anisotropy super-hydrophobic surface material

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Embodiment 1

[0029] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0030] (1) Surface pretreatment of base material

[0031] Cut the polytetrafluoroethylene 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, then put them in toluene, absolute ethanol and deionized water in sequence, and then use ultrasonic cleaning The machine was ultrasonically cleaned in the above solvents for 6 minutes to remove organic and inorganic pollutants on the surface of the material, and then the processed samples were placed in an oven and dried at 50°C for later use;

[0032] (2) Use laser equipment software to draw lattice anisotropic microstructure graphics

[0033] Use the Marking Mate drawing software of the high-speed laser marking machine to draw the dot matrix anisotropic structure, set the dot matrix spacing a in the ho...

Embodiment 2

[0039] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0040] (1) Surface pretreatment of base material

[0041] Cut the polytetrafluoroethylene polymer material with a thickness of 4mm into square pieces with a side length of 2cm×2cm, and process 6 samples at the same time, then put them in acetone, absolute ethanol and deionized water in sequence, and then use ultrasonic cleaning The machine was ultrasonically cleaned in the above solvents for 10 minutes to remove organic and inorganic pollutants on the surface of the material, and then the processed samples were placed in an oven and dried at 60°C for later use;

[0042] (2) Use laser equipment software to draw lattice anisotropic microstructure graphics

[0043] Use the Marking Mate drawing software of the high-speed laser marking machine to draw the dot matrix anisotropic structure, set the dot matrix spacing a in the h...

Embodiment 3

[0047] A method for preparing a bionic rice leaf surface lattice anisotropic superhydrophobic surface material, comprising the following steps in sequence:

[0048] (1) Surface pretreatment of base material

[0049] Cut the polytetrafluoroethylene polymer material with a thickness of 5mm into square pieces with a side length of 4cm×4cm, and process 4 samples at the same time, and then put them in toluene, absolute ethanol and deionized water in sequence, and then use ultrasonic cleaning The machine was ultrasonically cleaned in the above solvents for 10 minutes to remove organic and inorganic pollutants on the surface of the material, and then the processed samples were placed in an oven and dried at 70°C for later use;

[0050] (2) Use laser equipment software to draw lattice anisotropic microstructure graphics

[0051] Use the Marking Mate drawing software of the high-speed laser marking machine to draw the dot matrix anisotropic structure, set the dot matrix spacing a in t...

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Abstract

The invention relates to a preparation method of a bionic rice leaf surface lattice anisotropy super-hydrophobic surface material. The method sequentially comprises steps of (1) slicing a polytetrafluoroethylene high polymer material, sequentially putting the sliced polytetrafluoroethylene high polymer material into methylbenzene, absolute ethyl alcohol and the deionized water, respectively carrying out ultrasonic cleaning for 5-15 minutes, and drying at 40-90 DEG C; (2) drawing a bionic rice leaf surface lattice anisotropic structure graph by using Marking Mate software; (3) setting process parameters of laser equipment, setting the light spot diameter to be 0.1-0.5 mm, setting the engraving speed to be 10-100mm/s, setting the engraving mode to be horizontal and bidirectional, setting thepower to be 1%-10% and setting the engraving frequency to be 1-10 times, placing a treated base material on a laser equipment sample table, and completing laser engraving of the bionic rice leaf lattice anisotropic structure graph so as to obtain the bionic rice leaf lattice anisotropic structure graph. The method is advantaged in that the method is simple, the structure preparation method is rapid, environmental pollution is avoided, the prepared anisotropic super-hydrophobic surface is of a hierarchical structure similar to rice leaf surfaces, the anisotropic wettability is shown, and the method 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
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