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Method for preparing steel surface super-hydrophobic film

A super-hydrophobic, steel technology, applied to the surface coating liquid device, special surface, coating, etc., can solve the problem of low film strength of steam-induced phase separation method, long process route of sol-gel method, template extrusion method Expensive and other issues, to achieve the effect of easy preparation, good binding force, and easy promotion

Inactive Publication Date: 2012-11-14
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steam-induced phase separation method has low film strength; the sol-gel method has a long process route and high cost; the template extrusion method is expensive and small in size; Disadvantages such as limited hydrophobic surface area

Method used

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  • Method for preparing steel surface super-hydrophobic film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The invention provides a method for preparing a super-hydrophobic film layer on the surface of steel, which comprises the following steps:

[0033] Step 1. Provide a steel material and pretreat the surface of the steel material

[0034] polished

[0035] Use sandpaper to polish, so that the direction of the scratches on the steel surface is basically the same.

[0036] ultrasonic cleaning

[0037] Ultrasonic cleaning can be performed in two steps. First use acetone, petroleum ether or soda ash as the cleaning agent to clean the steel with an ultrasonic cleaner for 15 to 30 minutes at a cleaning temperature of 20 to 40°C; then use ethanol or deionized water as a cleaning agent to clean the steel with an ultrasonic cleaner 15-30 minutes, the cleaning temperature is 20-40°C, and blow dry immediately after cleaning.

[0038] surface polishing

[0039] Polish the steel surface after ultrasonic cleaning, embed the steel in a supporting structure, cure for a period of tim...

Embodiment 1

[0053] The composite electroplating solution used is mixed and then uniformly stirred with a high-speed stirrer.

[0054] A method for preparing a super-hydrophobic film layer on a steel surface, comprising the following steps:

[0055] Electroplating Ni-P-nanoPTFE is used to form a super-hydrophobic film layer on the surface of steel, the steps are as follows.

[0056] Step 1. Steel surface pretreatment

[0057] Provide a steel, the shape and model of this steel are not limited, in the present embodiment, this steel is the T9 steel of the rectangular parallelepiped structure that wire cutting forms, and length is 15 millimeters, and width is 15 millimeters, and thickness is 2 millimeters, namely 15mm * 15mm ×2mm. The method for surface pretreatment of steel comprises the following steps:

[0058] A1: Grinding

[0059] Use sandpaper to polish, choose 400 in turn # 、600 # , 800 # , 1200 # , 2000 # Grind the surface of the material with No. 1 sandpaper, and visually obs...

Embodiment 2

[0077] The composite electroplating solution used is mixed and then uniformly stirred with a high-speed stirrer.

[0078] Cut the T9 steel plate wire into a sample of 15mm×15mm×2mm.

[0079] Electroplating Ni-P-nanoPTFE is used to form a super-hydrophobic film layer on the surface of steel, the steps are as follows.

[0080] Step 1. Steel surface pretreatment

[0081] B1: Grinding

[0082] Use sandpaper to polish, choose 400 in turn # 、600 # , 800 # , 1200 # , 2000 # Grind the surface of the material with No. 1 sandpaper, and visually observe that the direction of the scratches on the steel surface is basically the same.

[0083] B2: Ultrasonic cleaning

[0084] First, use acetone as the cleaning agent to clean the steel with an ultrasonic cleaner for 20 minutes at a cleaning temperature of 40°C; then use ethanol as a cleaning agent to clean the steel with an ultrasonic cleaner for 20 minutes at a cleaning temperature of 40°C. Dry.

[0085] B3: surface polishing

[...

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Abstract

The invention relates to a method for preparing a steel surface super-hydrophobic film, which comprises the following steps: providing a first steel, and carrying out treatment on the steel surface; providing a composite plating solution which comprises a nickel and phosphorus plating solution and nano polytetrafluoroethylene particles; providing two battery lead plates, putting the steel which is subjected to surface treatment and the two battery lead plates into the composite plating solution to be plated, positioning the steel between the two battery lead plates, and forming a layer of micro nanostructure on the surface of the steel; and putting the steel which has the micro nanostructure on the surface into a vacuum furnace to be subjected to heat treatment. The method is suitable for the surface treatment of various steel materials, and has a wide application scope.

Description

technical field [0001] The invention belongs to the technical field of metal surface treatment, and in particular relates to a method for preparing a super-hydrophobic film layer on the surface of steel. Background technique [0002] The hydrophobicity of the material surface is often described by the static contact angle and dynamic rolling angle between the surface and water. A superhydrophobic surface refers to a surface whose contact angle with water is greater than or equal to 150°, and the rolling angle is less than or equal to 10°. Superhydrophobic materials are widely used, such as: waterproofing of automobile surfaces, anti-adhesion of expensive drugs on the needle tip, that is, surface self-cleaning; anti-fouling and anti-corrosion of ocean-going ships, that is, fluid drag reduction; transportation of oil pipelines, that is, oil-water Separation and other aspects, so the preparation of super-hydrophobic surface is of great significance. [0003] As we all know, st...

Claims

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Application Information

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IPC IPC(8): C25D15/00B05D5/08
Inventor 张晨辉衣晓红雒建斌
Owner TSINGHUA UNIV
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