Green and environment-friendly nano film and application thereof in metal corrosion resistance field

A nano-film, green and environmentally friendly technology, applied in the direction of electrolytic organic material coating, etc., can solve the problem of not being able to completely isolate the penetration of water molecules, and achieve the effect of simple and practical preparation process, environmental friendliness, and not easy to be oxidized and decomposed

Inactive Publication Date: 2018-06-01
BAOJI UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using electrodeposition technology alone to prepare a polymer film on a metal surface, although it can isolate ions to a certain extent, it cannot completely isolate the penetration of water molecules, oxygen, and solution ions.

Method used

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  • Green and environment-friendly nano film and application thereof in metal corrosion resistance field
  • Green and environment-friendly nano film and application thereof in metal corrosion resistance field
  • Green and environment-friendly nano film and application thereof in metal corrosion resistance field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: preparation of green environment-friendly nano film

[0035] Material preparation: pure copper (Shanghai Hongxin Metal Material Co., Ltd., purity greater than 99.95%), copper sheet with a size of 50mm×20mm×0.3mm, and the copper sheet is sprayed with 2.5μm, 1.5μm and 0.5μm diamond polishing agents in turn Polish and polish to a mirror-like surface, then immerse in acetone and ultrasonically clean for 15 minutes to degrease and remove other organic pollutants, then rinse with deionized water and absolute ethanol in sequence, and then blow dry with nitrogen.

[0036] 6-N,N-Dibutylamine-1,3,5-triazine-2,4-thiol monosalt (DBN)

[0037] Specific preparation process:

[0038] (1) Electrodeposition coating: the test temperature is room temperature, and the composition of the plating solution: 6-N,N-dibutylamine-1,3,5-triazine-2,4-thiol monosalt (DBN) and carbonic acid Sodium is used as a mixed solution of supporting electrolyte, and the concentration of DBN in t...

Embodiment 2

[0042] The sample prepared by embodiment 1 is immersed in the corrosive medium to detect its related properties, wherein the measurement of electrochemical parameters is carried out on the Wuhan Koster CS310 type electrochemical workstation, and the experiment adopts a standard three-electrode electrolytic cell, including a working electrode (copper electrode ), counter electrode (graphite electrode, size 50mm×30mm×3mm) and reference electrode (saturated calomel electrode SCE). Wherein, the reference electrode is connected to the electrolytic cell with a Lukin capillary salt bridge, all measured potentials are relative to the potential of the saturated calomel electrode (SCE), and the corrosion medium is 3.5wt% NaCl solution (simulated seawater).

[0043] Before the test, wrap the sample with polyimide tape so that the exposed area is 1cm 2 For the working electrode, first put the working electrode in the corrosive medium and soak it for about 0.5h, and then measure the change...

Embodiment 3

[0055] On the basis of Example 2, in order to further explore the anti-corrosion effect of electrodeposited film combined with adsorption on copper, the electrochemical impedance spectra of copper samples modified by different methods in 3.5% NaCl solution were measured, and the results are as follows figure 2 Shown in the figure are the electrochemical impedance Nyquist spectra of blank copper (without any treatment), electrodeposition coating, DBN adsorption and electrodeposition coating combined with DBN adsorption treatment of pure copper samples in sodium chloride solution, impedance Bode and phase angle diagrams, Z' and Z" in the figure are the real part and imaginary part of the copper electrode surface impedance value, and |Z| is the total impedance of the copper electrode.

[0056] from figure 2 It can be seen in a that all the curves present an irregular compressed semicircular capacitive reactance arc at the high frequency end. The compression deformation of the h...

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Abstract

The invention discloses a green and environment-friendly nano film and application thereof in the metal corrosion resistance field. The preparation method is carried out according to the steps of: (1)depositing a 6-N, N-dibutylamine-1, 3, 5-triazine-2, 4-thiol single salt nano polymeric film on a metal matrix surface by electrodeposition film plating process; and (2) placing the metal matrix subjected to electrodeposition film plating treatment in a solution containing the 6-N, N-dibutylamine-1, 3, 5-triazine-2, 4-thiol single salt for self-assembly treatment so as to obtain the green and environment-friendly nano film. The green and environment-friendly nano film is compact and stable, and has good hydrophobicity. The metal copper attached with the nano film on the surface has corrosioninhibition efficiency up to 98.12% in a 3.5wt%NaCl solution. The preparation process is simple, the conditions are controllable, also no harmful substance is released in the preparation process, and the obtained nano film is safe, non-toxic and stable in nature, is not easy to be oxidized and decomposed, also is environmentally friendly, and can be applied to the field of metal corrosion resistance.

Description

technical field [0001] The invention belongs to the field of new materials, and specifically relates to a method of preparing a corrosion-resistant nano film on a metal surface by using s-triazine dithiols as raw materials. Background technique [0002] Copper and its alloys are widely used in the electrical industry, electronics industry, transportation industry and modern marine industry due to their excellent properties (good electrical and thermal conductivity, strong mechanical properties and corrosion resistance, beautiful color, etc.). Since copper is easily corroded in seawater, a natural strong corrosive medium, it is very important to delay the corrosion of copper in seawater and improve the corrosion resistance of copper. Studies have shown that in the presence of Cl - In the aerobic medium, Cl - content and oxygen concentration are the main factors affecting the corrosion rate of copper, Cl - An increase in the content will increase the activity of the corrosi...

Claims

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Application Information

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IPC IPC(8): C25D9/02C23F11/16
CPCC23F11/161C25D9/02
Inventor 赵倩
Owner BAOJI UNIV OF ARTS & SCI
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