Epoxy zinc alloy paint used for marine corrosion environment construction

A corrosive environment, epoxy zinc technology, applied in the field of coatings, can solve the problems of reduced cathodic protection effect and large change in open circuit potential of coatings, and achieve excellent cathodic protection effect, high solid content, and reduced production.

Active Publication Date: 2015-09-23
XIAMEN SUNRUI SHIP COATING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the coating prepared by simply adding zinc powder and aluminum powder and ordinary zinc-aluminum alloy to the coating has a good cathodic protection effect at the initial stage, but after a period of service, the open circuit potential of the coating changes greatly, and the cathodic protection effect decline

Method used

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  • Epoxy zinc alloy paint used for marine corrosion environment construction
  • Epoxy zinc alloy paint used for marine corrosion environment construction

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Embodiment Construction

[0029] The present invention is an epoxy zinc alloy coating used for construction in a marine corrosive environment. The epoxy zinc alloy coating has excellent cathodic protection effect and anti-corrosion performance. After 4200h salt spray test, the open circuit potential of the coating has a small change and has a large Good anti-corrosion effect.

[0030] The epoxy zinc alloy coating of the present invention is composed of component A and component B, and component A contains epoxy resin, zinc alloy powder, body filler, nano silicon dioxide, polyamide wax, organic solvent and conductive multi-walled carbon Nanotubes, component B contains epoxy polyamide curing agent and organic solvent, wherein:

[0031] The epoxy resin is a bisphenol A type epoxy resin, and the molecular weight of the bisphenol A type epoxy resin is required to be between 200-1500 and its epoxy value is between 0.2-0.67.

[0032] The composition of the zinc alloy powder is Zn-Al-Mg-Si-Pb-Cd-Fe-Cu, and th...

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Abstract

The invention discloses epoxy zinc alloy paint used for marine corrosion environment construction. The epoxy zinc alloy paint consists of a component A and a component B, wherein the component A comprises epoxy resin, zinc alloy powder, a body filler, nano silica, polyamide wax, an organic solvent and a conductive multi-wall carbon nano tube; the component B consists of an epoxy polyamide curing agent and an organic solvent; in use, the component A and the component B are mixed in a weight part ratio of 10 to 1 to prepare the epoxy zinc alloy paint; according to the IOS20340 standards, a coating has a single-side stripping value of less than 3.0 mm in a resistance to 4200h cycling ageing test, has excellent shielding performance, good wear resistance, outstanding cathode stripping resistance and cycling ageing resistance, relatively low VOCs (volatile organic chemicals) content performance and very outstanding corrosion resistance, and meets the authentication use requirements of the marine engineering paint.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to an epoxy-zinc alloy coating used for marine corrosion environment construction. Background technique [0002] The marine environment is a harsh corrosive environment window. Due to the harshness of the marine corrosive environment, especially the offshore oil production platform is far away from the land, it is inconvenient to maintain, so the performance requirements for the coating are as follows: [0003] The coating has a long anti-corrosion period and a service life of at least 25 years; [0004] Easy maintenance, only a small amount of simple maintenance during use; [0005] Coating products are required to pass the Norsok standard M-501 standard, and the testing standard of Norsok standard M-501 can refer to the performance requirements of ISO 20340 for atmospheric area coatings: after 4200h cycle aging test, the corrosion spread at the scribed line of the zinc-rich coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/12
Inventor 张贤慧梅奕康瑞瑞方大庆杨名亮
Owner XIAMEN SUNRUI SHIP COATING
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