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A kind of water-based epoxy thick build type anticorrosion coating and preparation method thereof

A technology of water-based epoxy and anti-corrosion coatings, applied in the field of coatings, can solve the problems of low solid content of water-based paints, low spraying efficiency, and low film thickness at one time, and achieve the effects of increasing thixotropy, simple construction, and improving construction performance

Active Publication Date: 2021-04-06
WUXI HUADONG ZINDN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the low solid content of most water-based paints, the film thickness at one time is generally about 60-80um, and the film thickness at one time is too low, and high film thickness coating requires multiple sprays, resulting in high loss and low spraying efficiency

Method used

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  • A kind of water-based epoxy thick build type anticorrosion coating and preparation method thereof
  • A kind of water-based epoxy thick build type anticorrosion coating and preparation method thereof
  • A kind of water-based epoxy thick build type anticorrosion coating and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0038] The invention provides a kind of water-based epoxy thick build type anticorrosion coating, is made up of the base coating of 82 weight parts, the curing agent of 12 weight parts and the deionized water of 6 weight parts; Wherein:

[0039] The base coating consists of the following components (by mass):

[0040]

[0041]

[0042]The water-based epoxy emulsion is Araldite PZ 3961-1, 490-550 (g / equivalent), the solid content is 53%±2, and the viscosity (cP) at 25°C is 400-750; the solvent-free polyamine adduct is American Dow Chemistry D.E.H. 804. The nano-silica dispersion is Wacker H-15 aqueous dispersion with a solid content of 20%. The anti-rust pigment is selected from one of zinc phosphate and aluminum tripolyphosphate or its mixture A, the weight ratio of zinc phosphate and aluminum tripolyphosphate in mixture A is 1:1, the pigment is selected from carbon black, and the filler is selected from barium sulfate 1. One of the feldspar powder or its mixture B, th...

Embodiment 2

[0062] Basic operating condition is the same as embodiment 1, and difference is to select the talcum powder of equal quality to replace barium sulfate for use.

Embodiment 3

[0064] Basic operating condition is the same as embodiment 1, and difference is to select the mica powder of equal quality to replace barium sulfate for use.

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Abstract

The invention discloses an aqueous epoxy high-build anti-corrosion coating and a preparation method thereof. The coating comprises 82-85 parts by weight of a base coating, 10-12 parts by weight of a curing agent and 5-6 parts by weight of deionized water composition; the preparation method includes the following steps: (1) preparing a base coating; (2) preparing an aqueous nano-modified epoxy resin dispersion; (3) adjusting the paint; (4) sieving. The present invention is superior to general water-based epoxy coatings, and has a high film thickness for one-time spraying, wherein the dry film can reach a thickness of 300um. Poisonous and harmful solvent, simple construction and high efficiency, can replace solvent-based epoxy high-build coatings, and has good application prospects.

Description

technical field [0001] The invention relates to a water-based epoxy high-build type anticorrosion coating and a preparation method thereof, belonging to the field of coatings. Background technique [0002] Under the current policy of advocating environmental protection and energy saving, it is a crisis for polluting enterprises and a heavy pressure for traditional enterprises. It is indeed a development opportunity for manufacturers of environmentally friendly coatings, forcing traditional enterprises to transform and recover from the crisis. Look for opportunities. The development of water-based coatings in this opportunity is the consensus of the coatings manufacturing industry, so the application of water-based coatings in various fields is gradually increasing. Water-based epoxy primer is widely used in the field of anti-corrosion, and it is also a kind of coating with better anti-corrosion performance. [0003] Due to the low solid content of most water-based paints, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC08K2003/3045C08K2003/327C08K2003/328C08K2201/011C09D5/084C09D163/00C09D7/61C08K3/36C08K3/32C08K3/30C08K3/34C08K3/04
Inventor 杨志华罗全中褚路轩沈星星
Owner WUXI HUADONG ZINDN TECH