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A kind of preparation method of superhydrophobic film on the surface of metal material

A metal material and super-hydrophobic technology, applied in the field of metal surface treatment, can solve the problems of super-hydrophobic research process complexity, insufficient research, high cost of raw materials, etc., achieve good hydrophobic effect, improve strength and hydrophobicity, and simple preparation method

Active Publication Date: 2019-05-21
广东瑱亿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is that the preparation is complicated and unstable
[0009] (5) Ultraviolet light curing method is a technology for photocuring perfluoropolyether with solvent-resistant microfluidic devices. The method is simple and feasible but has poor durability
[0010] (6) The organic polymer phase separation method is to reduce the solubility of the polymer and precipitate it under the action of an external force, so that the phase is separated and a non-uniform or uniform film is formed. The cost of raw materials used in this method is high, the process is relatively complicated, and the preparation is time-consuming. longer
At present, the research process of superhydrophobicity in metal anticorrosion is complicated, the cost is high, and the research is not systematic enough, so it is difficult to apply it to the actual industry.

Method used

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  • A kind of preparation method of superhydrophobic film on the surface of metal material
  • A kind of preparation method of superhydrophobic film on the surface of metal material
  • A kind of preparation method of superhydrophobic film on the surface of metal material

Examples

Experimental program
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Effect test

Embodiment 1

[0058] A method for preparing super-hydrophobic film on the surface of metal materials, see the schematic diagram of the process flow Figure 5 , Specifically including the following steps:

[0059] Step 1, substrate pretreatment

[0060] Take Cr5 steel plate with hardness HV=800 as the metal matrix, soak the Cr5 steel plate in 60℃ lye for 3 minutes, rinse with deionized water after taking it out, soak it in pickling solution for 30s, after taking it out, use deionized water Rinse to remove oil stains and oxides on the surface of the Cr5 steel plate to obtain a Cr5 steel plate after impurity removal;

[0061] Among them, the components contained in the lye and its mass concentration are Na 2 CO 3 :10g / L, NaOH: 25g / L, Na 4 P 2 O 7 ·10H 2 O: 90g / L, emulsifier OP-10: 2g / L;

[0062] Pickling liquid is dilute H 2 SO 4 The solution has a molar concentration of 0.4mol / L.

[0063] Step 2, electroplating

[0064] Take the Cr5 steel plate after impurity removal as the cathode, Ti-IrO 2 The materi...

Embodiment 2

[0075] A method for preparing a super-hydrophobic film on the surface of a metal material specifically includes the following steps:

[0076] Step 1, substrate pretreatment

[0077] Take the Cr5 steel plate with hardness HV=800 as the metal matrix, soak the Cr5 steel plate in 65℃ lye for 5 minutes, rinse with deionized water after taking it out, soak it in pickling solution for 30s, after taking it out, use deionized water Rinse to remove oil stains and oxides on the surface of the Cr5 steel plate to obtain a Cr5 steel plate after impurity removal;

[0078] Among them, the components contained in the lye and its mass concentration are Na 2 CO 3 :15g / L, NaOH: 30g / L, Na 4 P 2 O 7 ·10H 2 O: 95g / L, emulsifier OP-10: 3g / L;

[0079] Pickling liquid is dilute H 2 SO 4 The solution has a molar concentration of 0.5mol / L.

[0080] Step 2, electroplating

[0081] The Cr5 steel plate after impurity removal is used as the cathode, the insoluble lead-tin alloy is used as the anode, the electrode spac...

Embodiment 3

[0088] A method for preparing a super-hydrophobic film on the surface of a metal material specifically includes the following steps:

[0089] Step 1, substrate pretreatment

[0090] Using T2 copper plate as the metal substrate, soak the T2 copper plate in 70℃ lye for 3 minutes, take it out and rinse with deionized water, soak it in pickling solution for 30s, after taking it out, rinse with deionized water to remove the T2 copper plate Oil stains and oxides on the surface to obtain a T2 copper plate after impurity removal;

[0091] Among them, the components contained in the lye and its mass concentration are Na 2 CO 3 :10g / L, NaOH: 25g / L, Na 4 P 2 O 7 ·10H 2 O: 90g / L, emulsifier OP-10: 2g / L;

[0092] Pickling liquid is dilute H 2 SO 4 The solution has a molar concentration of 0.4mol / L.

[0093] Step 2, electroplating

[0094] Take the T2 copper plate after cleaning as the cathode, Ti-IrO 2 The material is used as the anode, the electrode spacing is 0.5cm, it is placed in the electroplat...

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Abstract

A method for preparing a superhydrophobic film on the surface of metal materials, belonging to the technical field of surface hydrophobic treatment of metal materials. The method steps include: pretreating a metal substrate to remove oil stains and oxides on the surface of the metal substrate; using the impurity-removed metal substrate as a cathode, inert electrode materials, pure Ni electrodes or lead-tin alloy electrodes as anodes, and the electrode spacing is 0.5~2cm, placed in the electroplating solution for electroplating, electroplating uses a DC power supply, and the controlled current density is 50~70A / dm 2 , rinse and blow dry to obtain the metal matrix after electroplating; soak it in an ethanol solution of long-chain fatty acids for more than 2 minutes, modify it, and dry it to obtain a superhydrophobic film on the surface of the metal material. Its morphology is uniform and irregular, and the roughness value is 1.732~2.036μm, and the hydrophobic angle reaches more than 150°. The superhydrophobic film has anti-stick, self-cleaning and anti-corrosion properties and is widely used in life and industry.

Description

Technical field [0001] The invention belongs to the technical field of metal surface treatment, in particular to a hydrophobization treatment technology on the surface of a metal material, and in particular to a method for preparing a superhydrophobic film on the surface of a metal material. Background technique [0002] As an important engineering structural material, metal has played an important and irreplaceable role in the history of human social development with its unique performance advantages. Multifunctional and intelligent metal surfaces can greatly expand the actual and potential application value of metal materials. [0003] The metal surface has high surface free energy and is a typical inherently hydrophilic material. Almost all liquids can easily spread on and wet the metal surface. The wettability of a solid surface depends on its chemical composition (or surface free energy) and geometric fine structure (or surface roughness). Generally speaking, superhydrophob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/12C25D5/36C25D5/48C23G1/19C23G1/08
CPCC23G1/081C23G1/19C25D3/12C25D5/36C25D5/48
Inventor 刘常升谭隽阳郝俊杰安振强
Owner 广东瑱亿新材料有限公司
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