CN114592219A - Preparation method of electroplated polydopamine-nickel nano composite coating - Google Patents
Preparation method of electroplated polydopamine-nickel nano composite coating Download PDFInfo
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- CN114592219A CN114592219A CN202210243565.7A CN202210243565A CN114592219A CN 114592219 A CN114592219 A CN 114592219A CN 202210243565 A CN202210243565 A CN 202210243565A CN 114592219 A CN114592219 A CN 114592219A
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- dopamine
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- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 67
- 239000002114 nanocomposite Substances 0.000 title claims abstract description 45
- 239000011248 coating agent Substances 0.000 title claims abstract description 39
- 238000000576 coating method Methods 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 36
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 28
- 238000007747 plating Methods 0.000 claims abstract description 19
- 238000009713 electroplating Methods 0.000 claims description 40
- 238000004140 cleaning Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 18
- VYFYYTLLBUKUHU-UHFFFAOYSA-N dopamine Chemical compound NCCC1=CC=C(O)C(O)=C1 VYFYYTLLBUKUHU-UHFFFAOYSA-N 0.000 claims description 16
- 239000008367 deionised water Substances 0.000 claims description 15
- 229910021641 deionized water Inorganic materials 0.000 claims description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 12
- 230000004913 activation Effects 0.000 claims description 9
- 229960003638 dopamine Drugs 0.000 claims description 8
- 239000007769 metal material Substances 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 244000137852 Petrea volubilis Species 0.000 claims description 6
- 230000003213 activating effect Effects 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000003153 chemical reaction reagent Substances 0.000 claims description 5
- 238000005303 weighing Methods 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004070 electrodeposition Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 description 24
- 238000005260 corrosion Methods 0.000 description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000013211 curve analysis Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002103 nanocoating Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920001690 polydopamine Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/20—Electroplating using ultrasonics, vibrations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention relates to the technical field of surface plating, in particular to a preparation method of an electroplated poly-dopamine-nickel nano composite coating. The method can promote the electrodeposition process of nickel, has simple process and low cost, and can be prepared on any metal substrate.
Description
Technical Field
The invention relates to the technical field of surface plating, in particular to a preparation method of an electroplated poly-dopamine-nickel nano composite plating layer.
Background
The corrosion problem of metal materials is widely existed in various fields, which not only causes huge economic loss, but also has great influence on environment and resources. According to statistics, the metal consumed by the metal in the world due to corrosion accounts for about 30% of the annual production, a large number of metal components and metal equipment are scrapped due to the damage of the metal components and the metal equipment due to corrosion in each department of the national economy, and the loss caused by the corrosion accounts for about 2% -4% of the total value of the national economy every year. Furthermore, accident statistics in the chemical industry show that 70% of explosions are caused by equipment corrosion problems. Therefore, appropriate protective measures are taken on the surface of the metal material, which has great significance for economic development, environment protection, resource protection and life safety of people. The development of surface covering layer technology provides a new idea for the metal corrosion prevention problem.
Disclosure of Invention
In order to solve the problems, the invention provides a preparation method of an electroplated poly-dopamine-nickel nano composite coating, which can promote the electrodeposition process of nickel, has simple process and low cost and can be prepared on any metal substrate.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for preparing an electroplated poly-dopamine-nickel nano composite coating,
taking a high-purity nickel plate as an anode, taking a metal material to be electroplated as a cathode, immersing the anode and the cathode into a poly-dopamine-nickel electroplating solution, and taking a direct-current stabilized power supply as an electroplating power supply to form a poly-dopamine-nickel nano composite coating on the surface of the metal material to be electroplated.
Preferably, the preparation method of the poly-dopamine-nickel electroplating solution comprises the following steps: firstly, weighing a reagent according to an electroplating formula of 1.2g/L dopamine in a 300ml electrolytic cell, weighing the reagent according to the amount of 50ml, and stirring for 10min by a magnetic stirrer until solute is dissolved uniformly to obtain the dopamine-nickel electroplating solution.
Preferably, the voltage value selected by the power supply is 10V, 15V or 20V respectively.
Preferably, the sample is heated in a water bath during the plating process to control the plating temperature at 35 ℃.
Preferably, during the electroplating process, an ultrasonic cleaner is used for assisting the electroplating with ultrasonic waves, and the ultrasonic frequency during the electroplating process is 40 KHz.
Preferably, a high-purity nickel plate with the Ni of more than or equal to 99.99 percent is used as an anode, and the pretreated metal substrate material is used as a cathode.
Preferably, the metal base material is pretreated by the following process:
sequentially grinding and polishing a metal substrate by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, sequentially ultrasonically removing oil by using acetone and/or absolute ethyl alcohol, cleaning by using deionized water, activating by using an acid solution, cleaning by using the deionized water and drying to obtain the metal substrate material with a bright and clean surface and a high activation degree for later use.
The beneficial effects of the invention are as follows:
1. ni2+ released by the anode nickel plate is used as a dopamine polymerization oxidant to drive polydopamine to move to the cathode substrate, and the dopamine can promote the electrodeposition process of nickel.
2. The poly-dopamine-nickel nano composite coating has the advantages of simple preparation process, low cost and environmental friendliness.
3. The poly-dopamine-nickel nano composite plating layer has excellent stability and corrosion resistance.
4. The preparation method of the poly-dopamine-nickel nano composite coating can be used for preparing any metal substrate.
Drawings
FIG. 1 is a schematic diagram of an electroplating process in the preparation method of the electroplated poly-dopamine-nickel nano composite coating.
FIG. 2 is a schematic view of a scanning electron microscope in the preparation method of the electroplated poly-dopamine-nickel nano-composite coating according to the present invention.
FIG. 3 is a schematic diagram showing the result of polarization curve analysis of the surface coating of the Q235 carbon steel metal substrate in the preparation method of the electroplated poly-dopamine-nickel nano-composite coating of the present invention.
FIG. 4 is a schematic diagram showing the result of polarization curve analysis of the surface coating of the stainless steel metal substrate in the method for preparing the electroplated poly-dopamine-nickel nanocomposite coating of the present invention.
Fig. 5 is a schematic diagram showing the result of polarization curve analysis of the surface coating of the red copper metal substrate in the preparation method of the electroplated poly-dopamine-nickel nano composite coating of the present invention.
Detailed Description
In order to make the purpose, technical solution and advantages of the present technical solution more clear, the present technical solution is further described in detail below with reference to specific embodiments. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present teachings.
As shown in fig. 1, the present invention provides a method for preparing an electroplated poly-dopamine-nickel nano composite coating, specifically, a high purity nickel plate is used as an anode, a metal material to be electroplated is used as a cathode, the anode and the cathode are immersed in a poly-dopamine-nickel electroplating solution, and a dc regulated power supply is used as an electroplating power supply to form a poly-dopamine-nickel nano composite coating on the surface of the metal material to be electroplated.
The preparation method of the poly-dopamine-nickel electroplating solution comprises the following steps: firstly, weighing a reagent in an electroplating formula of 1.1-1.3 g/L dopamine in a 300ml electrolytic cell according to 50ml, stirring for 10min by a magnetic stirrer until a solute is uniformly dissolved, and finally obtaining the dopamine-nickel electroplating solution.
Preferably, the voltage value selected by the power supply is 10V, 15V or 20V respectively.
The samples were heated in a water bath during the plating to control the plating temperature at 35 ℃. In the electroplating process, an ultrasonic cleaner is used for assisting electroplating by ultrasonic waves, and the ultrasonic frequency is 35KHz-40KHz in the electroplating process.
A high-purity nickel plate with the Ni content of more than or equal to 99.99 percent is used as an anode, and a pretreated metal substrate material is used as a cathode.
The pretreatment process of the metal substrate material comprises the following steps: sequentially grinding and polishing a metal substrate by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, sequentially ultrasonically removing oil by using acetone and/or absolute ethyl alcohol, cleaning by using deionized water, activating by using an acid solution, cleaning by using the deionized water and drying to obtain the metal substrate material with a bright and clean surface and a high activation degree for later use.
The image of the poly-dopamine-nickel nano composite nano coating prepared by the electroplating method under a scanning electron microscope is shown in fig. 2.
The following examples are provided to illustrate the electroplating process and electroplating effect of the poly-dopamine-nickel nanocomposite coating on some metal substrates.
Example 1:
the corrosion resistance test result of the poly-dopamine-nickel nano composite plating layer is shown in fig. 1, the result shows that the corrosion potential of the plating layer is shifted positively, the corrosion current density is reduced obviously, the corrosion inhibition efficiency of the poly-dopamine-nickel nano composite plating layer reaches 88.56%, and the poly-dopamine-nickel nano composite plating layer has excellent corrosion resistance. The preparation method comprises the following specific steps:
polishing: the Q235 carbon steel metal substrate is sequentially polished by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, so as to remove impurities on the surface of the material.
Oil removal: and ultrasonic cleaning with acetone and absolute ethyl alcohol for 15min to remove oil stain on the surface of the metal substrate material.
Cleaning: ultrasonically cleaning with deionized water for 15 min.
And (3) activation: activating with 10% sulfuric acid for 25s to obtain metal substrate material with high activation degree.
Cleaning: ultrasonically cleaning with deionized water for 15 min.
Electroplating a poly-dopamine-nickel nano composite coating: a high-purity nickel plate with the Ni content of more than or equal to 99.99 percent is used as an anode, a pretreated metal substrate material is used as a cathode, the formula of electroplating solution is 1.2g/L of dopamine, the temperature is 35 ℃, the voltage is 15V, the electroplating time is 3min, and the ultrasonic frequency of auxiliary electroplating is 40 KHz.
Cleaning: ultrasonically cleaning with deionized water for 5 min.
And (3) drying: and placing the prepared poly-dopamine-nickel nano composite coating in air at 25 ℃ for natural drying.
The prepared poly-dopamine-nickel nano composite coating has good binding force with a Q235 carbon steel substrate and excellent corrosion resistance.
Example 2:
the corrosion resistance test result of the poly-dopamine-nickel nano composite coating is shown in fig. 2, and the result shows that the corrosion potential of the coating is shifted positively, the corrosion current density is obviously reduced, the corrosion inhibition efficiency of the poly-dopamine-nickel nano composite coating reaches 53.20%, and the poly-dopamine-nickel nano composite coating has good corrosion resistance. The preparation method comprises the following specific steps:
(1) polishing: A316L stainless steel substrate is sequentially polished by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, so that impurities on the surface of the material are removed.
(2) Oil removal: and ultrasonic cleaning with acetone and absolute ethyl alcohol for 15min to remove oil stain on the surface of the metal substrate material.
(3) Cleaning: ultrasonically cleaning with deionized water for 15 min.
(4) And (3) activation: activating with 10mol/L hydrochloric acid for 30s to obtain the metal substrate material with high activation degree.
(5) Cleaning: ultrasonically cleaning with deionized water for 15 min.
(6) Electroplating a poly-dopamine-nickel nano composite coating: a high-purity nickel plate with the Ni content of more than or equal to 99.99 percent is used as an anode, a pretreated metal substrate material is used as a cathode, the formula of electroplating solution is 1.2g/L of dopamine, the temperature is 35 ℃, the voltage is 15V, the electroplating time is 3min, and the ultrasonic frequency of auxiliary electroplating is 40 KHz.
(7) Cleaning: ultrasonically cleaning with deionized water for 5 min.
(8) And (3) drying: and (3) placing the prepared poly-dopamine-nickel nano composite coating in air at 25 ℃ for naturally airing.
The prepared poly-dopamine-nickel nano composite coating has good bonding force with a 316L stainless steel substrate and excellent corrosion resistance.
Example 3:
the corrosion resistance test result of the poly-dopamine-nickel nano composite plating layer is shown in fig. 3, the result shows that the corrosion potential of the plating layer is shifted positively, and meanwhile, the corrosion current density is reduced obviously, and the corrosion inhibition efficiency of the poly-dopamine-nickel nano composite plating layer reaches 85.92% through calculation, so that the poly-dopamine-nickel nano composite plating layer has good corrosion resistance. The preparation method comprises the following specific steps:
(1) polishing: the T2 red copper substrate is sequentially polished by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, so as to remove impurities on the surface of the material.
(2) Oil removal: and ultrasonic cleaning with acetone and absolute ethyl alcohol for 15min to remove oil stain on the surface of the metal substrate material.
(3) Cleaning: ultrasonically cleaning with deionized water for 15 min.
(4) Activation: activating with 10mol/L hydrochloric acid for 30s to obtain the metal substrate material with high activation degree.
(5) Cleaning: ultrasonically cleaning with deionized water for 15 min.
(6) Electroplating a poly-dopamine-nickel nano composite coating: a high-purity nickel plate with the Ni content of more than or equal to 99.99 percent is used as an anode, a pretreated metal substrate material is used as a cathode, the formula of electroplating solution is 1.2g/L of dopamine, the temperature is 35 ℃, the voltage is 15V, the electroplating time is 3min, and the ultrasonic frequency of auxiliary electroplating is 40 KHz.
(7) Cleaning: ultrasonically cleaning with deionized water for 5 min.
(8) And (3) drying: and (3) placing the prepared poly-dopamine-nickel nano composite coating in air at 25 ℃ for naturally airing.
The prepared poly-dopamine-nickel nano composite plating layer has good binding force with a T2 red copper substrate and excellent corrosion resistance.
The foregoing is only a preferred embodiment of the present invention, and many variations in the detailed description and the application scope will be apparent to those skilled in the art based on the spirit of the present invention, and all changes that fall within the scope of the protection of the present patent will be made without departing from the spirit of the present invention.
Claims (7)
1. A preparation method of an electroplated poly-dopamine-nickel nano composite coating is characterized by comprising the following steps:
taking a high-purity nickel plate as an anode, taking a metal material to be electroplated as a cathode, immersing the anode and the cathode into a poly-dopamine-nickel electroplating solution, and taking a direct-current stabilized power supply as an electroplating power supply to form a poly-dopamine-nickel nano composite coating on the surface of the metal material to be electroplated.
2. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 1, characterized in that: the preparation method of the poly-dopamine-nickel electroplating solution comprises the following steps: firstly, weighing a reagent according to an electroplating formula of 1.2g/L dopamine in a 300ml electrolytic cell, weighing the reagent according to the amount of 50ml, and stirring for 10min by a magnetic stirrer until solute is dissolved uniformly to obtain the dopamine-nickel electroplating solution.
3. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 1, characterized in that: the voltage value selected by the power supply is 10V, 15V or 20V respectively.
4. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 1, characterized in that: the samples were heated in a water bath during the plating to control the plating temperature at 35 ℃.
5. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 1, characterized in that: in the electroplating process, an ultrasonic cleaner is used for assisting electroplating by ultrasonic waves, and the ultrasonic frequency is 40KHz in the electroplating process.
6. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 1, characterized in that: a high-purity nickel plate with the Ni content of more than or equal to 99.99 percent is used as an anode, and a pretreated metal substrate material is used as a cathode.
7. The method for preparing an electroplated poly-dopamine-nickel nanocomposite coating according to claim 6, characterized in that: the pretreatment process of the metal substrate material comprises the following steps:
sequentially grinding and polishing a metal substrate by 280, 400, 600, 800 and 1000-mesh SiC sand paper until the surface is bright, sequentially ultrasonically removing oil by using acetone and/or absolute ethyl alcohol, cleaning by using deionized water, activating by using an acid solution, cleaning by using the deionized water and drying to obtain the metal substrate material with a bright and clean surface and a high activation degree for later use.
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