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Manufacturing method for super-hydrophobic metal surface

A metal surface, super-hydrophobic technology, applied in the field of preparation of super-hydrophobic metal surface, can solve the problems of difficult industrialization, expensive operation of equipment, difficult scale application, etc., and achieve the effects of low cost, broad application prospect and simple method.

Inactive Publication Date: 2016-06-22
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, these technologies are mainly in the laboratory stage due to the expensive equipment and complicated operation, and it is difficult to realize industrialization and large-scale application.

Method used

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  • Manufacturing method for super-hydrophobic metal surface
  • Manufacturing method for super-hydrophobic metal surface
  • Manufacturing method for super-hydrophobic metal surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of superhydrophobic iron sheet

[0023] 1. Cut the iron sheet with a thickness of 0.3mm into 40mm×80mm, and polish it with 400-grit sandpaper. The grinding method is as follows figure 1 As shown, the polished iron piece was then ultrasonicated in acetone and absolute ethanol for 10 minutes.

[0024] 2. Heat the pretreated iron sheet to 500°C at a heating rate of 10°C / min in a muffle furnace, keep the temperature constant for 4 hours, and then cool naturally.

[0025] 3. Put the heat-treated iron sheet into the pre-prepared 1wt.% fluorosilane ethanol solution for modification for 12 hours, the stirring speed is 160 rpm, then take it out, wash it with absolute ethanol, and cure it at 100°C for 2 hours Iron flakes with superhydrophobic surfaces can be obtained in hours. The superhydrophobic properties of the resulting product are as follows: figure 2 shown.

Embodiment 2

[0026] Embodiment 2: the preparation of superhydrophobic aluminum sheet

[0027] 1. Cut an aluminum sheet with a thickness of 0.1mm into 100mm×100mm, and use an 80# grinding wheel to evenly polish the surface of the aluminum sheet. After polishing, the aluminum sheet is ultrasonicated in acetone and absolute ethanol for 15 minutes.

[0028] 2. Heat the pretreated aluminum sheet to 160°C in an oven at a heating rate of 15°C / min, keep the temperature constant for 2 hours, and then cool naturally.

[0029] 3. Put the heat-treated aluminum sheet into the pre-prepared 50wt% oleic acid anhydrous ethanol solution for modification for 6 hours, the stirring speed is 180 rpm, then take it out, and cure it at 80°C for 2 hours to obtain Aluminum sheet with superhydrophobic surface. The superhydrophobic properties of the resulting product are as follows: image 3 shown.

Embodiment 3

[0030] Embodiment 3: the preparation of superhydrophobic copper sheet

[0031] 1. Cut a copper sheet with a thickness of 0.15mm into 40mm×60mm, polish it with 240-grit sandpaper, and then ultrasonicate it in acetone and absolute ethanol for 10 minutes.

[0032] 2. Heat the pretreated copper sheet to 300°C at a heating rate of 3°C / min, keep the temperature constant for 4 hours, and then cool naturally.

[0033] 3. Put the heat-treated copper sheet into the pre-prepared 0.05mol / L n-dodecylmercaptan ethanol solution for modification for 80 minutes, the stirring speed is 180 rpm, then take it out, and heat it at 60°C After curing for 50 minutes, a copper sheet with a superhydrophobic surface can be obtained. The superhydrophobic properties of the resulting product are as follows: Figure 4 shown.

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Abstract

The invention discloses a manufacturing method for a super-hydrophobic metal surface. A super-hydrophobic material is manufactured through grinding pretreatment, thermal treatment and low-surface-energy matter modification. A base body surface having roughness is obtained through grinding pretreatment; a metal oxide layer is generated through thermal treatment; and the super-hydrophobic surface is manufactured through low-surface-energy matter modification. The technological method is simple and controllable, and industrial production is easy to achieve.

Description

technical field [0001] The invention relates to a method for preparing a superhydrophobic metal surface, in particular to a method for preparing a superhydrophobic surface on a metal after direct grinding, heat treatment, and surface treatment with low surface energy substances. Background technique [0002] With the discovery of the "lotus leaf effect" on hydrophobic surfaces, superhydrophobic materials are widely used in self-cleaning, antifreeze and antifog, anticorrosion and resistance, microfluidic chips, non-destructive liquid transportation, etc., showing the broad application prospects of superhydrophobic materials. [0003] At present, the preparation of superhydrophobic surfaces mostly adopts electrochemical corrosion or chemical corrosion to construct the rough structure required for superhydrophobic surfaces. The electrochemical corrosion method prepares a regular rough surface through anodic oxidation, and then uses low surface energy substances to modify it t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D5/08B05D7/14B05D3/02B05D3/12
CPCB05D5/08B05D3/0236B05D3/12B05D7/14
Inventor 蒋炜毛明梁斌
Owner SICHUAN UNIV
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