CN106498452A - A kind of electrogalvanizing method based on glycine betaine urea water eutectic solvent - Google Patents
A kind of electrogalvanizing method based on glycine betaine urea water eutectic solvent Download PDFInfo
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- CN106498452A CN106498452A CN201610953563.1A CN201610953563A CN106498452A CN 106498452 A CN106498452 A CN 106498452A CN 201610953563 A CN201610953563 A CN 201610953563A CN 106498452 A CN106498452 A CN 106498452A
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- eutectic solvent
- glycine betaine
- carbamide
- zinc
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/22—Electroplating: Baths therefor from solutions of zinc
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- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a kind of electrogalvanizing method based on glycine betaine urea water eutectic solvent, belongs to electroplating technology field.Glycine betaine, carbamide and distillation water termostat stirring are obtained transparent eutectic solvent by the method first, zinc chloride are added in eutectic solvent again the eutectic solvent that constant temperature stirring obtains containing zinc then, in this, as electroplate liquid；Using pure zine plate as anode, used as negative electrode, be immersed in electroplate liquid carries out constant current plating to mild steel.The present invention has the characteristics of electrochemical window width, zincincation safety non-toxic, environmental protection using eutectic solvent prepared by glycine betaine urea water, solves the problem of environmental pollution of the techniques such as borofluoride is zinc-plated, halogenide is zinc-plated presence.
Description
Technical field
The present invention relates to a kind of electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent, belongs to electroplating technology neck
Domain.
Background technology
In the coating bath for filling galvanizing flux, metal zinc ion in galvanizing flux is moved in the presence of potential difference electrogalvanizing
Coating is formed on negative electrode.Electrogalvanizing is widely used in the protective coating of ferrous materials, particularly prevents atmospheric corrosion.Tradition
Galvanized method has zinc-plated, chloride galvanizing of cyanide etc..Wherein the zinc-plated cyanide because containing severe toxicity of cyanide, seriously polluted.
Serious to equipment corrosion containing substantial amounts of potassium chloride in chloride galvanizing electroplate liquid.Using glycine betaine-carbamide-water eutectic solvent
Replace aqueous solution electrogalvanizing, the pollution of environment can be reduced.Number of patent application is 201510273097.8, entitled " one kind is low
Under temperature by the micro-nano zinc layers of the direct electro-deposition of zinc oxide method " application disclose a kind of method for preparing electro-deposition zinc layers, should
Method is with choline chloride, carbamide according to mol ratio 1:2 are mixed to get ionic liquid, are subsequently adding zinc oxide electrodepositing zinc coating.
Content of the invention
For overcoming the deficiencies in the prior art, it is an object of the invention to provide a kind of be based on glycine betaine-carbamide-water eutectic
The electrogalvanizing method of solvent, to zincincation safety non-toxic, the environmental protection.
In order to realize that above-mentioned technical purpose, the present invention are achieved by the following technical programs.
The invention provides a kind of electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent, specifically includes as follows
Step：
(1) preparation of eutectic solvent：It is first according to mol ratio 1:2:3 weigh glycine betaine, carbamide, distilled water, Ran Houyu
Under the conditions of 80 DEG C, constant temperature stirring obtains transparent eutectic solvent.
(2) preparation of electroplate liquid：Then according to glycine betaine mol ratio 0.1:1 weighs zinc chloride, is added to above-mentioned low common
In molten solvent, constant temperature stirring obtains eutectic solvent containing zinc as electroplate liquid；
(3) using pure zine plate as anode, used as negative electrode, be immersed in the electroplate liquid that step (2) is obtained carries out perseverance to mild steel
Electric current is electroplated, wherein：Negative electrode and anode direct range are 1-2cm；
(4), after the completion of electroplating, mild steel is taken out cleaning, is dried.
Further, in step (3), constant current density is 2-6mA/cm2.
Further, in step (3), temperature of electroplating solution is 50-70 DEG C.
Further, in step (3), electroplating time is 15-30 minutes.
Compared with prior art, the present invention has following technique effect：
1st, the present invention prepares eutectic solvent using glycine betaine-carbamide-water, with wide electrochemical window 3.0V, compares
In the 1.2V of water, can be with the more metals of electro-deposition.
2nd, relative to traditional borofluoride is zinc-plated, halogenide is zinc-plated, eutectic solvent environmental protection used by the present invention can biology drop
Solution, belongs to Green Chemistry solvent.
3rd, the corrosion potential of electro-galvanized layer of the present invention substantially reduces relative to matrix, can play a part of anodic protection.
Description of the drawings
Fig. 1 is the cyclic voltammetry curve of glycine betaine-carbamide-water eutectic solvent used by the present invention；
As shown in figure 1, arriving electrochemical reaction between+1.53V -1.47, therefore the electrochemical window of eutectic solvent is
3.0V.
Fig. 2 is the SEM figures of the electrogalvanizing that the embodiment of the present invention 1 is obtained；
As shown in Fig. 2 plating zinc surface microstructure is into graininess.
Fig. 3 is the XRD figure of the electrogalvanizing that the embodiment of the present invention 1 is obtained；
As shown in figure 3, the XRD figure of electrogalvanizing, in Fig. 2, vertical coordinate is intensity, and abscissa is two times of angles, and diffraction maximum is golden
Category zinc and iron matrix.
Fig. 4 is the EDS energy spectrum diagrams of the electrogalvanizing that the embodiment of the present invention 1 is obtained；
As shown in figure 4, the EDS power spectrums explanation surface of electrogalvanizing is metallic zinc.
Fig. 5 is the polarization curve of the electrogalvanizing that the embodiment of the present invention 1 is obtained and matrix；
As shown in figure 5, the corrosion potential of zinc coat is lower than matrix, anodic protection can be played a part of.
Specific embodiment
Below in conjunction with specific embodiment, the present invention is described further.
DDS-307 conductivity meters, DJS-1C type platinum black electrodes (electrode constant is 0.92), measurement is adopted in following examples
Glycine betaine-carbamide-water eutectic solvent and the electrical conductivity containing zinc eutectic solvent under different temperatures.
Embodiment 1
Weigh 0.2mol glycine betaines, 0.4mol carbamide, 0.6mol distilled water first respectively to be positioned in beaker, using guarantor
Fresh film phonograph seal beaker, then obtains transparent eutectic solvent in 80 DEG C of constant temperature stirrings.The zinc chloride of 0.02mol is subsequently adding,
80 DEG C of constant temperature stirrings obtain eutectic solvent containing zinc.
Using pure zine plate as anode, mild steel enters as negative electrode, the eutectic solvent containing zinc for immersing heating in water bath to 50 DEG C
Row constant current plating in 30 minutes, wherein, negative electrode and anode direct range are 1cm, and electric current density is 4mA/cm2.
After the completion of plating, mild steel taking-up is cleaned with distilled water 2 times, finally 60 DEG C of drying in an oven.
When 50 DEG C, glycine betaine-carbamide-water eutectic solvent electrical conductivity is 33.4 μ s cm-1.
Electrical conductivity when 50 DEG C containing zinc eutectic solvent is 732.0 μ s cm-1.
Embodiment 2
Weigh 0.2mol glycine betaines, 0.4mol carbamide, 0.6mol distilled water first respectively to be positioned in beaker, using guarantor
Fresh film phonograph seal beaker, then obtains transparent eutectic solvent in 80 DEG C of constant temperature stirrings.The zinc chloride of 0.025mol is subsequently adding,
80 DEG C of constant temperature stirrings obtain eutectic solvent containing zinc.
Using pure zine plate as anode, mild steel enters as negative electrode, the eutectic solvent containing zinc for immersing heating in water bath to 60 DEG C
Row constant current plating in 15 minutes, wherein, negative electrode and anode direct range are 2cm, and electric current density is 2mA/cm2.
After the completion of plating, mild steel taking-up is cleaned with distilled water 2 times, finally 60 DEG C of drying in an oven.
Embodiment 3
Weigh 0.2mol glycine betaines, 0.4mol carbamide, 0.6mol distilled water first respectively to be positioned in beaker, using guarantor
Fresh film phonograph seal beaker, then obtains transparent eutectic solvent in 80 DEG C of constant temperature stirrings.The zinc chloride of 0.02mol is subsequently adding,
80 DEG C of constant temperature stirrings obtain eutectic solvent containing zinc.
Using pure zine plate as anode, mild steel enters as negative electrode, the eutectic solvent containing zinc for immersing heating in water bath to 70 DEG C
Row constant current plating in 15 minutes, wherein, negative electrode and anode direct range are 1cm, and electric current density is 6mA/cm2.
After the completion of plating, mild steel taking-up is cleaned with distilled water 2 times, finally 60 DEG C of drying in an oven.
Claims (4)
1. a kind of electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent, it is characterised in that comprise the steps：
(1) preparation of eutectic solvent：According to mol ratio 1:2:3 weigh glycine betaines, carbamide, distilled water and then in 80 DEG C of conditions
Lower constant temperature stirring obtains transparent eutectic solvent；
(2) preparation of electroplate liquid：According to glycine betaine mol ratio 0.1:1 weighs zinc chloride, is added in above-mentioned eutectic solvent
Constant temperature stirring obtains eutectic solvent containing zinc as electroplate liquid；
(3) using pure zine plate as anode, used as negative electrode, be immersed in the electroplate liquid that step (2) is obtained carries out constant current to mild steel
Plating, wherein：Negative electrode and anode direct range are 1-2cm；
(4), after the completion of electroplating, mild steel is taken out cleaning, is dried.
2. the electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent as claimed in claim 1, it is characterised in that institute
It is 2-6mA/cm to state constant current density in step (3)2.
3. the electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent as claimed in claim 1, it is characterised in that institute
It is 50-70 DEG C to state temperature of electroplating solution in step (3).
4. the electrogalvanizing method based on glycine betaine-carbamide-water eutectic solvent as claimed in claim 1, it is characterised in that institute
It is 15-30 minutes to state electroplating time in step (3).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107904630A (en) * | 2017-12-14 | 2018-04-13 | 安徽工业大学 | A kind of method of electric tinning based on ultrasonic wave added malic acid glycine betaine eutectic solvent |
| CN107904628A (en) * | 2017-12-14 | 2018-04-13 | 安徽工业大学 | A kind of electrogalvanizing method based on ultrasonic wave added malic acid glycine betaine eutectic solvent |
| CN107937009A (en) * | 2017-11-10 | 2018-04-20 | 中国五环工程有限公司 | The separation method of phenolic compound in coal tar and DCL/Direct coal liquefaction product |
| CN110714212A (en) * | 2019-10-12 | 2020-01-21 | 常州大学 | Method for preparing super-hydrophobic nickel film in aqueous solution system by nickel chloride one-step method |
| CN113088856A (en) * | 2021-03-31 | 2021-07-09 | 江西科技师范大学 | Deep eutectic solvent hot galvanizing additive and preparation method and application thereof |
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| CN102191517A (en) * | 2010-03-10 | 2011-09-21 | 中国科学院过程工程研究所 | Method of electroplating zinc, nickel, molybdenum and their alloys by using ionic liquid |
| CN105256343A (en) * | 2015-11-23 | 2016-01-20 | 安徽工业大学 | Electrogalvanizing method based on choline chloride-xylitol deep eutectic solvent |
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| CN102191517A (en) * | 2010-03-10 | 2011-09-21 | 中国科学院过程工程研究所 | Method of electroplating zinc, nickel, molybdenum and their alloys by using ionic liquid |
| CN105256343A (en) * | 2015-11-23 | 2016-01-20 | 安徽工业大学 | Electrogalvanizing method based on choline chloride-xylitol deep eutectic solvent |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107937009A (en) * | 2017-11-10 | 2018-04-20 | 中国五环工程有限公司 | The separation method of phenolic compound in coal tar and DCL/Direct coal liquefaction product |
| CN107937009B (en) * | 2017-11-10 | 2020-08-04 | 中国五环工程有限公司 | Method for separating phenolic compounds from coal tar and direct coal liquefaction product |
| CN107904630A (en) * | 2017-12-14 | 2018-04-13 | 安徽工业大学 | A kind of method of electric tinning based on ultrasonic wave added malic acid glycine betaine eutectic solvent |
| CN107904628A (en) * | 2017-12-14 | 2018-04-13 | 安徽工业大学 | A kind of electrogalvanizing method based on ultrasonic wave added malic acid glycine betaine eutectic solvent |
| CN107904628B (en) * | 2017-12-14 | 2019-05-07 | 安徽工业大学 | It is a kind of based on ultrasonic wave added malic acid-glycine betaine eutectic solvent electrogalvanizing method |
| CN110714212A (en) * | 2019-10-12 | 2020-01-21 | 常州大学 | Method for preparing super-hydrophobic nickel film in aqueous solution system by nickel chloride one-step method |
| CN113088856A (en) * | 2021-03-31 | 2021-07-09 | 江西科技师范大学 | Deep eutectic solvent hot galvanizing additive and preparation method and application thereof |
| CN113088856B (en) * | 2021-03-31 | 2022-12-23 | 江西科技师范大学 | Deep eutectic solvent hot galvanizing additive and preparation method and application thereof |
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