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Chromium-free waterborne epoxy anticorrosion primer with excellent solvent oil resistant performance

A water-based epoxy and anti-corrosion primer technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as hardness drop, softening of paint film, foaming, etc., and achieve the effect of good anti-rust performance

Active Publication Date: 2012-07-11
MARINE CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional two-component coatings will have problems such as blistering, softening of the paint film, and decrease in hardness during the process of resisting fire-resistant hydraulic oil.

Method used

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  • Chromium-free waterborne epoxy anticorrosion primer with excellent solvent oil resistant performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment １

[0052] Component A: self-made water-based epoxy resin emulsion: 4.5kg, 500g zinc phosphate, 660g zinc calcium phosphomolybdate, 1.2kg talc powder, 900g mica powder, 1kg light calcium carbonate, 340g silane coupling agent, 48g preservative , Anti-flash rust agent 20g, film-forming aid 30g, defoamer 40g, wetting and dispersing agent 40g.

[0053] Component B: self-made water-based epoxy curing agent: 4kg, co-solvent: 500g, deionized water 5.5kg.

[0054] A and B components are used in combination at a weight ratio of 3.1:1.

Embodiment 2

[0056] Component A: self-made water-based epoxy resin emulsion: 4 kg, zinc phosphate 600g, aluminum tripolyphosphate 800g, talc powder 1.1kg, mica powder 1kg, light calcium carbonate 800g, silane coupling agent 330g, preservative 50g, Anti-flash rust agent 23g, film-forming aid 30g, defoamer 42g, wetting and dispersing agent 40g.

[0057] Component B: self-made water-based epoxy curing agent: 4.4kg, co-solvent: 600g, deionized water 5kg.

[0058] A and B components are used in combination at a weight ratio of 2.7:1.

Embodiment 3

[0060] Component A: self-made water-based epoxy resin emulsion: 4.5 kg, 600 g of zinc phosphate, 300 g of potassium zinc phosphate, 500 g of aluminum tripolyphosphate, 1.1 kg of talc powder, 1.1 kg of mica powder, 800 g of light calcium carbonate, silane coupling agent 300g, preservative 50g, anti-flash rust agent 25g, film-forming aid 25g, defoamer 40g, wetting and dispersing agent 40g.

[0061] Component B: self-made water-based epoxy resin curing agent: 4.5kg, co-solvent: 500g, deionized water 5kg.

[0062] A and B components are used in combination at a weight ratio of 2.9:1.

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Abstract

The invention discloses chromium-free waterborne epoxy anticorrosion primer with excellent solvent oil resistant performance. The chromium-free waterborne epoxy anticorrosion primer comprises a component A and a component B, wherein the component A is a dispersoid formed by waterborne epoxy emulsion, pigment filler, and the like and the component B comprises a curing agent, cosolvent and the like. The chromium-free waterborne epoxy anticorrosion primer disclosed by the invention has the characteristics of good anticorrosion performance, large cohesive force, high strength, good water resistant performance, good solvent oil resistant performance, excellent mechanical performance, excellent flexibility, steady storage, and the like, can bear the influence of high-low temperature cycling, uses water as a dispersion medium, does not contain heavy metal such as chromium, is pollution-free to the environment, has low probability of shedding off and is convenient to construct.

Description

technical field [0001] The invention relates to a water-based anti-corrosion primer for aluminum alloy substrates with excellent medium resistance (solvent oil, water, etc.). The water-based primer does not contain chromium, has no pollution to the environment, and is safe and convenient to use. The paint film has good medium resistance (including solvent oil, water, etc.), excellent mechanical properties (including impact resistance, bending, hardness, high and low temperature resistance, adhesion, etc.), and can be used on aluminum alloys, iron and various On plastic substrates (such as epoxy resin, phenolic resin, PC, PET, PEI, etc.), it has good anti-corrosion performance. Background technique [0002] Solvent-based epoxy coatings are widely used in the anti-corrosion of steel structures and aluminum alloy structures due to their excellent anti-corrosion properties, cohesion and adhesion, and are recognized as one of the best anti-corrosion coating varieties at home and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
Inventor 王华进王丹张庆雷赵薇姜清淮
Owner MARINE CHEM RES INST CO LTD
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