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Heavy sizing aqueous heavy anti-corrosion paint and production method thereof

A production method and heavy-duty anti-corrosion technology, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of failure to achieve long-term anti-corrosion effect, decline in water resistance of paint films, and low construction efficiency. Storage stability and construction, reduced shrinkage, low cost effect

Inactive Publication Date: 2009-12-02
ZHEJIANG TIANNU GROUP PAINT MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is not suitable for thick coating construction, and multiple coatings must be carried out, so the construction efficiency is very low
However, domestic water-based anti-corrosion coatings mostly use emulsifiers as the hydrophilic medium. After the coating dries, it remains in the paint film. Due to the presence of emulsifiers, the corrosion is promoted and the hydrophilicity of the paint film is further improved. resistance, causing the water resistance of the paint film to decrease, making the coating prone to blistering and anti-rust phenomena, failing to achieve long-term anti-corrosion effect

Method used

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  • Heavy sizing aqueous heavy anti-corrosion paint and production method thereof
  • Heavy sizing aqueous heavy anti-corrosion paint and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] In a reaction device equipped with a stirrer, a heater, and a condenser, add 420g of 601# epoxy resin and 55g of polytetramethylene glycol, start to stir and raise the temperature, add an appropriate amount of Lewis catalyst when it is 70-80°C, and continue at 105±2°C After 8-9 hours of reaction, add 260 g of water and stir until the product is completely dissolved to obtain a water-based epoxy resin with a water-white clear solution, a solid content of 51.2%, a viscosity of 465 mPa.s, and an epoxy equivalent of 250. Put the obtained 300g water-based epoxy resin, 0.8g BYK-346, 150g iron red powder, 250g mica iron oxide, 120g zinc phosphate and 3.5g Rheolate 2001 into the dispersion pot for grinding and dispersion. When the fineness is less than 70um, add 0.2g JN- W is dispersed evenly again, and then 250g of HTW-208 water-based modified amine curing agent is added to carry out the paint test.

Embodiment 2

[0015] In a reaction device equipped with a stirrer, a heater, and a condenser, add 420g of 601# epoxy resin and 55g of polytetramethylene glycol, start to stir and raise the temperature, add an appropriate amount of Lewis catalyst when it is 70-80°C, and continue at 105±2°C After 8-9 hours of reaction, add 260 g of water and stir until the product is completely dissolved to obtain a water-based epoxy resin with a water-white clear solution, a solid content of 51.5%, a viscosity of 475 mPa.s, and an epoxy equivalent of 2650. Put the obtained 300g water-based epoxy resin, 0.8g BYK-346, 150g iron red powder, 250g talcum powder, 120g aluminum tripolyphosphate and 3.5g RMpa-1075 into the dispersion pot for grinding and dispersion. When the fineness is less than 70um, add 0.2g JN-W was evenly dispersed again, and then 250g of Incorez 149 water-based modified amine curing agent was added for paint mixing test.

Embodiment 3

[0017] In a reaction device equipped with a stirrer, a heater, and a condenser, add 420g of 601# epoxy resin and 65g of polytetramethylene glycol, start to stir and raise the temperature, add an appropriate amount of Lewis catalyst at 70-80°C, and continue at 105±2°C After 4-5 hours of reaction, add 260 g of water and stir until the product is completely dissolved to obtain a water-based epoxy resin with a water-white clear solution, a solid content of 51.9%, a viscosity of 425 mPa.s, and an epoxy equivalent of 380. Put the obtained 300g water-based epoxy resin, 0.8g BYK-346, 150g iron red powder, 250g mica iron oxide, 120g zinc phosphate and 3.5g Mpa-1075 into the dispersing pot for grinding and dispersing. When the fineness is less than 70um, add 0.2g JN -W re-disperse evenly, then add 250g Incorez 149 water-based modified amine curing agent for paint test.

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Abstract

The invention designs heavy sizing aqueous heavy anti-corrosion paint, which is prepared by synthesizing 30 to 40 weight portions of aqueous epoxy resin as a main film forming material synthesized and inhibitive pigment containing 35 to 45 weight portions of mica iron oxide and 15 to 25 weight portions of zinc phosphate. A method for producing the heavy sizing aqueous heavy anti-corrosion paint comprises the following steps: using the aqueous epoxy resin as the main film forming material; using the mica iron oxide or the zinc phosphate as the inhibitive pigment; adding a small amount of auxiliary agent and deionized water, and grinding and dispersing the mixture; and adding an aqueous modified amine curing agent to perform curing to obtain the bicomponent aqueous anti-corrosion paint. The heavy sizing aqueous heavy anti-corrosion paint is suitable for high-pressure airless spraying, the coating thickness of single-channel paint reaches more than 120 mu m, a coating layer has good adhesive force, is dried quickly and has excellent water resistance, and the neutral salt fog resistance reaches more than 1,000 hours. The heavy sizing aqueous heavy anti-corrosion paint saves energy resources, reduces the environmental pollution, and reduces the manufacturing cost; and the product performance can reach the advanced level in the world, and the heavy sizing aqueous heavy anti-corrosion paint has excellent economic benefit.

Description

technical field [0001] The invention relates to a coating and a production method thereof, in particular to a thick-build type water-based heavy-duty anti-corrosion coating and a production method thereof. Background technique [0002] Traditional anti-corrosion coatings are mostly solvent-based coatings, such as alkyd, acrylic, polyurethane, epoxy, chlorinated rubber, high chlorinated polyethylene, etc. These coatings contain a large amount of organic solvents. In the construction of these coatings, a large amount of solvents volatilize into the atmosphere, which is harmful to the health of construction personnel and pollutes the environment. With the increasingly stringent requirements for environmental protection, the current environmental pressure is affecting the global coatings industry. Therefore, reducing and controlling the release of organic solvents in coatings is a necessary measure to protect the environment, and it is the general trend to develop low-VOC or ev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D7/12C09D5/08C09D163/02
Inventor 姚珄铭
Owner ZHEJIANG TIANNU GROUP PAINT MFG