Water-borne epoxy zinc-rich lacquer and painting method thereof

A water-based epoxy zinc-rich, coating method technology, applied in epoxy resin coatings, devices for coating liquid on surfaces, coatings, etc., can solve the problem of limiting the application of water-based epoxy zinc-rich paint, environmental and human health damage , No major progress has been made, etc., to prevent precipitation, improve adhesion, and reduce the volatilization of organic matter

Inactive Publication Date: 2017-02-01
SICHUAN YANDING WATER BASED ENVIRONMENT FRIENDLY PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the enhancement of people's awareness of environmental protection and the improvement of health, the requirements for the safety of coatings are becoming more and more stringent. Most manufacturers of steel structures on the market still use coatings containing organic solvents such as benzene and xylene. coatings, causing great damage to the environment and human health
The existing water-based heavy-duty anti-corrosion system primers at home and abroad include water-based inorganic zinc-rich primers and water-based epoxy zinc-rich primers. Due to the low cost of water-based paints and the safety and convenience of construction, it is a current research hotspot, but due to technical difficulties , no significant progress has been made for a long time
[0003] In addition, the water-based epoxy zinc-rich primer has excellent anti-corrosion performance, but it has higher requirements on the surface cleanliness of the material during the construction process and the construction environment. More than 50%; the supporting coating is required to be resistant to the strong alkali of inorganic silicate, and a primer is required to avoid a large number of bubbles; the water-based epoxy zinc-rich primer requires more than 50% of zinc powder, which is easy to produce in the coating Hard precipitation; in addition, because zinc powder is relatively active, it is easy to react with water and release hydrogen, which poses unsafe hazards
Therefore, some use occasions limit the application of water-based epoxy zinc-rich paint

Method used

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  • Water-borne epoxy zinc-rich lacquer and painting method thereof
  • Water-borne epoxy zinc-rich lacquer and painting method thereof
  • Water-borne epoxy zinc-rich lacquer and painting method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of water-based epoxy zinc-rich paint of the present embodiment mainly includes the raw materials of following weight ratio: 8 parts of water-based epoxy resin, 55 parts of zinc powder, 0.5 part of bentonite, 8.5 parts of neutralizing agent, 3 parts of leveling agent, 25 parts of polyamide curing agent.

[0027] The coating method of a kind of water-based epoxy zinc-rich paint of the present embodiment is specifically that the surface of the steel structure is derusted by a grinder or sandblasting to make it reach the Swedish derusting standard Sa2.5 grade; to ensure that the steel structure When the temperature is higher than 5°C, the water-based epoxy zinc-rich paint is applied by spraying, the film thickness is 60μm, and the spraying amount per square meter of the surface of the steel structure is 0.2kg; 3 coats, each The interval between spraying is 24 hours; among them, during the painting process, the water-based epoxy zinc-rich paint is stirred after a peri...

Embodiment 2

[0029] A kind of water-based epoxy zinc-rich paint of the present embodiment mainly includes the raw materials of following weight ratio: 10 parts of water-based epoxy resin, 61.5 parts of zinc powder, 0.5 part of bentonite, 5 parts of neutralizing agent, 3 parts of leveling agent, 20 parts of polyamide curing agent.

[0030] The coating method of a kind of water-based epoxy zinc-rich paint of the present embodiment is specifically that the surface of the steel structure is derusted by a grinder or sandblasting to make it reach the Swedish derusting standard Sa2.5 grade; to ensure that the steel structure When the temperature is higher than 5°C, the water-based epoxy zinc-rich paint is applied by spraying, the film thickness is 80 μm, and the spraying amount per square meter of the surface of the steel structure is 0.2kg; 2 coats, 2 The interval between spraying is 24 hours; among them, during the painting process, the water-based epoxy zinc-rich paint is stirred after a perio...

Embodiment 3

[0032] A kind of water-based epoxy zinc-rich paint of the present embodiment mainly includes the raw materials of following weight ratio: 15 parts of water-based epoxy resin, 60 parts of zinc powder, 0.5 part of bentonite, 5.5 parts of neutralizing agent, 3 parts of leveling agent, 16 parts of polyamide curing agent.

[0033] The coating method of a kind of water-based epoxy zinc-rich paint of the present embodiment is specifically that the surface of the steel structure is derusted by a grinder or sandblasting to make it reach the Swedish derusting standard Sa2.5 grade; to ensure that the steel structure When the temperature is higher than 5°C, the water-based epoxy zinc-rich paint is applied by spraying, the film thickness is 80 μm, and the spraying amount per square meter of the surface of the steel structure is 0.2kg; 2 coats, 2 The interval between spraying is 48 hours; among them, during the painting process, the water-based epoxy zinc-rich paint is stirred after a perio...

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Abstract

The invention provides water-based epoxy zinc-rich lacquer and painting method thereof. The lacquer includes by weight, 8-15 parts of water-borne epoxy resin, 50.2-71.5 parts of zinc powder mixture, 10-30 parts of curing agent, and 3-15 parts of additive. The product has excellent anti-corrosion property, good mechanical property, and strong adhesive ability. The product has electrical conductivity and protection function for cathode. The product can be used as base coat for storage tank, container, steel structure, steel pipe, ocean platform, vessel, sea port facilities and for harsh and anti-corrosion environment. The product is excellent in property and has broad applications.

Description

technical field [0001] The invention relates to the technical field of coating chemical industry, in particular to a water-based epoxy zinc-rich paint and a coating method thereof. Background technique [0002] With the enhancement of people's awareness of environmental protection and the improvement of health, the requirements for the safety of coatings are becoming more and more stringent. Most manufacturers of steel structures on the market still use coatings containing organic solvents such as benzene and xylene. Coatings cause great damage to the environment and human health. The existing water-based heavy-duty anti-corrosion system primers at home and abroad include water-based inorganic zinc-rich primers and water-based epoxy zinc-rich primers. Due to the low cost of water-based paints and the safety and convenience of construction, it is a current research hotspot, but due to technical difficulties , no significant progress has been made for a long time. [0003] I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/10B05D7/26
CPCC09D163/00B05D7/26B05D2301/00B05D2504/00C08K3/08C08K3/346C08K2003/0893C09D5/106
Inventor 汪锋
Owner SICHUAN YANDING WATER BASED ENVIRONMENT FRIENDLY PAINT CO LTD
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