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A Simple System Electrodeposition Zinc Coating Method

An electrodeposition and system technology, applied in the field of simple system electrodeposition zinc coating, can solve problems such as pollution of the environment, and achieve the effect of simple raw materials and simple operation

Active Publication Date: 2020-08-04
NANJING UNIV OF INFORMATION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a method for preparing zinc coating by electrodeposition using choline chloride-zinc chloride ionic liquid for the corrosion equipment and environmental pollution problems in the preparation of zinc coating by industrial electrodeposition. Simple, easy to operate, safe and non-toxic, reducing the cost of preparation

Method used

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  • A Simple System Electrodeposition Zinc Coating Method
  • A Simple System Electrodeposition Zinc Coating Method
  • A Simple System Electrodeposition Zinc Coating Method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Weigh 27.92g of choline chloride and 40.89g of zinc chloride at a molar ratio of 1:1.5, put the two into a flask and mix them with a glass rod, then fix the flask in an oil bath and place Stir and heat on a magnetic stirrer, control the temperature at 90°C until a transparent viscous liquid is formed, and finally obtain 50ml of choline chloride-zinc chloride ion solution;

[0023] (2) Choose zinc sheet as soluble anode, copper block as cathode, put into the ionic solution prepared in (1) above to carry out constant current electrodeposition reaction, the distance between cathode and anode is 2cm, control temperature is 120 ℃, reaction time 40min, the current density is 2 mA / cm 2 ;

[0024] (3) After electrodeposition, the samples were taken out and ultrasonically cleaned with anhydrous ethanol and deionized water respectively, and finally dried with a hair dryer at low temperature, and the temperature was controlled at 25°C.

[0025] The surface energy spectrum an...

Embodiment 2

[0027] (1) Weigh 27.92g of choline chloride and 54.52g of zinc chloride at a molar ratio of 1:2, put the two into a flask and mix well with a glass rod, then fix the flask in an oil bath and place Stir and heat on a magnetic stirrer, control the temperature at 90°C until a transparent viscous liquid is formed, and finally obtain 60ml of choline chloride-zinc chloride ion solution;

[0028] (2) Select zinc sheet as soluble anode, copper block as cathode, put into the ionic solution prepared in (1) above to carry out constant current electrodeposition reaction, the distance between cathode and anode is 2cm, control temperature is 110 ℃, reaction time 30min, the current density is 4 mA / cm 2 ;

[0029] (3) After electrodeposition, the samples were taken out and ultrasonically cleaned with anhydrous ethanol and deionized water respectively, and finally dried with a hair dryer at low temperature, and the temperature was controlled at 25°C.

[0030] The SEM image of the surface of ...

Embodiment 3

[0032] (1) Weigh 27.92g of choline chloride and 68.15g of zinc chloride at a molar ratio of 1:2.5, put the two into a flask and mix them with a glass rod, then fix the flask in an oil bath and place Stir and heat on a magnetic stirrer, control the temperature at 90°C until a transparent viscous liquid is formed, and finally obtain 70ml of choline chloride-zinc chloride ion solution;

[0033] (2) Choose zinc sheet as soluble anode, copper block as cathode, put into the ionic solution prepared in (1) above to carry out constant current electrodeposition reaction, the distance between cathode and anode is 2cm, control temperature is 140 ℃, reaction time 20min, the current density is 6 mA / cm 2 ;

[0034] (3) After electrodeposition, the samples were taken out and ultrasonically cleaned with anhydrous ethanol and deionized water respectively, and finally dried with a hair dryer at low temperature, and the temperature was controlled at 25°C.

[0035] The surface energy spectrum an...

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Abstract

A simple-system electrolytic deposition method for a zinc coating comprises the following steps (1) of preparing ionic liquid, wherein choline chloride and zinc chloride are mixed first of fall and then heated, the mixture is stirred to be transparent and thick at the constant temperature, and then the choline chloride-zinc chloride ionic liquid is generated; (2) conducting an electrolytic deposition reaction, wherein a zinc sheet is used as a soluble anode, red copper is used as a cathode, the zinc sheet and the red copper constitute electrodes, the electrodes are dipped into the ionic liquidprepared in the step (1) and connected with a power source through copper wires, and then the constant-current electrolytic deposition reaction is performed; and (3) preparing a sample, wherein afterthe electrolytic reaction is completed, the sample is taken out to undergo ultrasonic cleaning and drying. According to the simple-system electrolytic deposition method for the zinc coating, the choline chloride and the zinc chloride are used as raw materials to form the ionic liquid, the ionic liquid is used as electrolyte, and the metal zinc coating is prepared through direct electrolytic deposition; raw material ingredients are simple, operation is easy, environmental friendliness is achieved, safety and nontoxic performance are achieved, and the simple-system electrolytic deposition method for the zinc coating has important practical significance in value-added utilization of zinc.

Description

technical field [0001] The invention belongs to the field of electroplating technology, in particular to a method for electrodepositing a zinc coating with a simple system. Background technique [0002] my country is the country with the largest zinc reserves. Since 1992, my country's zinc production has ranked first in the world. As a basic material in modern industrial society, zinc metal is widely used in various fields. Electrogalvanizing is widely used in the protective coating of iron and steel materials. Due to the low cost of zinc electrodeposition technology, it is suitable for wide promotion in large-scale industrial production. Traditional galvanizing methods include cyanide galvanizing and chloride galvanizing. Among them, cyanide galvanizing is seriously polluted because it contains highly toxic cyanide. Chloride galvanizing bath contains a large amount of potassium chloride, which seriously corrodes the equipment. How to obtain high-quality metal zinc and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D3/66
CPCC25D3/665
Inventor 江凡石玮峰吴红艳赵兴明李胤李士泽
Owner NANJING UNIV OF INFORMATION SCI & TECH
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