Preparation method for anticorrosive zinc cathode aluminum plate with coating

A cathode aluminum plate and coating technology, applied in coatings, anti-corrosion coatings, electrodes, etc., can solve the problems of easy corrosion, not clear enough, complex operation process, etc., to extend the service life, improve the anti-corrosion performance, and simple preparation process Effect

Active Publication Date: 2017-05-31
湖南株冶有色金属有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum is a relatively active metal and is easily corroded, especially the part of the cathode plate for electrolytic zinc that is exposed outside the liquid level line and on both sides of the aluminum plate. The anti-corrosion methods mentioned above are not clear enough, and the operation process is relatively complicated. How to improve the F resistance of the zinc cathode aluminum plate to the zinc electrolyte, and reduce the cost of F removal or zinc raw materials has not been mentioned

Method used

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  • Preparation method for anticorrosive zinc cathode aluminum plate with coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step A, the surface treatment process of the zinc cathode aluminum plate: the ordinary zinc cathode aluminum plate is subjected to surface pickling, polishing, water washing, and ethanol washing processes to obtain a zinc cathode aluminum plate with degreasing, impurity removal and clean surface;

[0033] Step B, paint mixing process: the components are silicone rubber, o-phthalic polyester resin, phenol polyester resin and epoxy resin, and the mass percentages are respectively 3%, 10%, 32%, 55% of the paint under stirring conditions Mix well to get a uniformly mixed liquid paint;

[0034] Step C, spraying process: spraying the liquid paint obtained in step B on the corrosion-prone area of ​​the zinc cathode plate treated in step A to obtain a coated zinc cathode aluminum plate;

[0035] Step D, curing process: the coated zinc cathode aluminum plate obtained in step C is subjected to gel treatment for 20 minutes at room temperature, then hardened at a temperature of 75°...

Embodiment 2

[0038] Step A, the surface treatment process of the zinc cathode aluminum plate: the ordinary zinc cathode aluminum plate is subjected to surface pickling, polishing, water washing, and ethanol washing processes to obtain a zinc cathode aluminum plate with degreasing, impurity removal and clean surface;

[0039]Step B, paint mixing process: the components are silicone rubber, o-phthalic polyester resin, phenol polyester resin and epoxy resin, and the mass percentages are respectively 8%, 15%, 30%, 47% of the paint under stirring conditions Mix well to get a uniformly mixed liquid paint;

[0040] Step C, spraying process: spraying the liquid paint obtained in step B on the corrosion-prone area of ​​the zinc cathode plate treated in step A to obtain a coated zinc cathode aluminum plate;

[0041] Step D, curing process: the coated zinc cathode aluminum plate obtained in step C is subjected to gel treatment for 50 minutes at room temperature, then hardened at a temperature of 90°C...

Embodiment 3

[0044] Step A, the surface treatment process of the zinc cathode aluminum plate: the ordinary zinc cathode aluminum plate is subjected to surface pickling, polishing, water washing, and ethanol washing processes to obtain a zinc cathode aluminum plate with degreasing, impurity removal and clean surface;

[0045] Step B, paint mixing process: the components are silicone rubber, o-phthalic polyester resin, phenol polyester resin and epoxy resin, and the mass percentages are respectively 8%, 18%, 45%, 30% of the paint under stirring conditions Mix well to get a uniformly mixed liquid paint;

[0046] Step C, spraying process: spraying the liquid paint obtained in step B on the corrosion-prone area of ​​the zinc cathode plate treated in step A to obtain a coated zinc cathode aluminum plate;

[0047] Step D, curing process: the coated zinc cathode aluminum plate obtained in step C is subjected to gel treatment for 45 minutes at room temperature, then hardened at a temperature of 85°...

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Abstract

The invention relates to a preparation method for an anticorrosive zinc cathode aluminum plate with a coating. Surface treatment is carried out on an ordinary zinc cathode aluminum plate, a deoiled and decontaminated zinc cathode aluminum plate with a clean surface is obtained, then, liquid coating which is mixed to be uniform is sprayed to the corrosive area of the zinc cathode aluminum plate in a spraying manner, and through curing treatment, the anticorrosive zinc cathode aluminum plate with the coating is obtained. According to the preparation method, the process investment is small, the process procedures are simple, no special requirement is made for equipment, the energy consumption is low, no pollution is caused, and the application prospects are wide.

Description

technical field [0001] The invention relates to the field of nonferrous metal zinc metallurgy technology and material anticorrosion technology, in particular to a preparation method of a coated anticorrosion zinc cathode aluminum plate. Background technique [0002] The cathode plate for wet electrolytic zinc is made of pure aluminum rolled plate, and the anode plate is made of lead-silver alloy or lead-silver multi-element alloy. During the production process, most of the surfaces of the cathode plate and the anode plate are immersed in the zinc sulfate solution in the electrolytic cell. Under the action of direct current, the cathode and the anode each undergo discharge deposition, and the zinc in the zinc sulfate is deposited and adhered. On the surface of the cathode plate, the total electrochemical reaction formula of its electrolytic deposition is: [0003] ZnSO 4 +H 2 O+е Zn+H 2 SO 4 +1 / 2O 2 [0004] During the production process, the zinc cathode aluminum pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C7/02C25C1/16C09D163/00C09D183/04C09D167/00C09D5/08
CPCC08L2205/035C09D5/08C09D163/00C09D167/00C25C1/16C25C7/02C08L83/04C08L67/00C08L63/00Y02P10/20
Inventor 廖贻鹏林文军刘一宁黄鹏飞张磊
Owner 湖南株冶有色金属有限公司
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