Highly corrosion-resistant zinc coating sealing agent

A galvanized layer, high corrosion resistance technology, used in anti-corrosion coatings, coatings, etc., can solve the problems of poor salt spray performance of the coating, sticking tools, etc., to achieve excellent environmental performance, convenient production control, and extended service life. Effect

Inactive Publication Date: 2019-05-10
宁波市鄞州艾博化工科技有限公司
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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 provide a high-corrosion-resistant and anti-corrosion galvanized layer sealant and its preparation method, to overcome the poor salt spray performance of the existing sealant coating and the problems of sticking to hangers

Method used

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  • Highly corrosion-resistant zinc coating sealing agent
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  • Highly corrosion-resistant zinc coating sealing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) First add 4.4 parts of pure water to the container, add 0.8 part of cerium nitrate and 0.8 part of lanthanum nitrate at a rotating speed of 150 rpm, until completely dissolved;

[0032] (2) Add 60% water-soluble acrylic resin in the stirring tank, and slowly add the dissolving solution obtained in step (1) at a speed of 120 rpm until uniformly stirred;

[0033] (3) Add 30 parts of polyethylene glycol-14 dimethylsiloxane into the stirring tank at a rotating speed of 100 rpm until it is evenly stirred.

Embodiment 2

[0035] (1) First add 3.6 parts of pure water to the container, and add 0.2 part of cerium nitrate and 0.2 part of lanthanum nitrate at a speed of 150 rpm until the dissolution is complete;

[0036] (2) Add 76 water-soluble acrylic resins in the stirring tank, and slowly add the dissolving solution obtained in step (1) at a speed of 120 rpm until uniformly stirred;

[0037] (3) Add 20 parts of polyethylene glycol / polypropylene glycol-14 / 4-dimethylsiloxane into the stirring tank at a rotational speed of 100 rpm until it is evenly stirred.

Embodiment 3

[0039] (1) First add 3.8 parts of pure water to the container, and add 0.6 part of cerium nitrate and 0.6 part of lanthanum nitrate at a speed of 150 rpm until completely dissolved;

[0040] (2) Add 70% of water-soluble acrylic resin in the stirring tank, and slowly add the solution obtained in step (1) at a speed of 120 rpm until uniformly stirred;

[0041] (3) Add 25 parts of polyethylene glycol-6 acetate siloxane into the stirring tank at a rotational speed of 100 rpm, until it is evenly stirred.

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Abstract

The invention discloses a highly corrosion-resistant zinc coating sealing agent. The highly corrosion-resistant zinc coating sealing agent is composed of 60-80% of water-soluble acrylic resin, 20-30%of modified silane, 0.2-0.8% of cerous nitrate, 0.2-0.8% of lanthanum nitrate and pure water as balance. The highly corrosion-resistant zinc coating sealing agent is a novel thin and uniform sealing agent and can improve the salt fog testing performance of common zinc coatings by 2-3 times; meanwhile, the highly corrosion-resistant zinc coating sealing agent is high in environment-friendly performance and meet the ROHS (restriction of the use of certain hazardous substances) standards of the European Union, and compared with common commercially available products, can prolong the service cycleof working liquor by more than 2 times; besides, the highly corrosion-resistant zinc coating sealing agent is higher in back-plating demolding performance and rack cleaning performance compared withthe commercially available products.

Description

technical field [0001] The invention relates to the technical field of galvanized surface treatment, more specifically, it relates to a highly corrosion-resistant and anti-corrosion galvanized layer sealant. Background technique [0002] As the main anti-corrosion coating of steel parts, galvanizing ranks first in the amount of electroplating processing. In addition to the relatively low processing unit, the galvanized layer on steel parts is an anodic coating. When electrochemical corrosion occurs due to moisture, Zinc corrodes first to protect the steel substrate. However, zinc itself is an amphoteric metal, neither acid nor alkali resistant, and it is easy to generate alkaline zinc carbonate corrosion products in the atmosphere, resulting in white spots, white ash and even white hair. Passivation treatment after galvanizing can improve corrosion resistance to varying degrees and prolong the corrosion time of zinc itself, so passivation treatment is required without excep...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D5/08
Inventor 唐依国
Owner 宁波市鄞州艾博化工科技有限公司
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