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Waterborne epoxy anticorrosive paint and preparation method thereof

A water-based epoxy and anti-corrosion coating technology, used in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of ineffective and stable dispersion of nano-powders, decreased storage stability of coatings, and complicated preparation processes. Achieve the effect of excellent physical and mechanical properties, excellent mechanical properties and excellent anti-corrosion properties

Inactive Publication Date: 2014-12-24
JIANGSU YICHENG BARRIER SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN102746766A adopts water-based epoxy emulsion and silica sol as the film-forming material, although it has good anti-corrosion performance, but the storage stability of the coating is easily reduced due to the silica sol
CN100503754 has introduced a kind of water-based epoxy nano-composite coating and its preparation method, wherein the preparation process of water-based epoxy nano-composite curing agent is complex, and the dispersion method nano powder can not be effectively and stably dispersed in the curing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] .

[0033] The preparation method of water-based epoxy anti-corrosion coating: put components 1~5 into the mixing tank according to the weighed weight, add component 6 under high shear, stir evenly, and then put the powder of components 7~11 in batches , and carry out high-speed stirring and grinding. After the fineness reaches the requirement, add components 12-16 and stir evenly to obtain component A.

[0034] Mix components 17, 18 and 19, disperse at high speed for 30 minutes, then add component 20, continue to disperse at high speed for about 10 minutes, then transfer the mixed slurry to a ball mill for ball milling to obtain a stable dispersion B component.

[0035] The performance test of the paint is tested according to the test method specified in the corresponding national standard, and the performance is as follows:

[0036] .

Embodiment 2

[0038] .

[0039] The preparation method of water-based epoxy anti-corrosion coating: put components 1~5 into the mixing tank according to the weighed weight, add component 6 under high shear, stir evenly, and then put the powder of components 7~11 in batches , and carry out high-speed stirring and grinding. After the fineness reaches the requirement, add components 12-17 and stir evenly to obtain component A.

[0040] Mix components 17, 18 and 19 and disperse at high speed for 30 minutes, then add component 20 and continue to disperse at high speed for about ten minutes, then transfer the mixed slurry to a ball mill for ball milling to obtain a stable dispersion B component.

[0041] The performance test of the paint is tested according to the test method specified in the corresponding national standard, and the performance is as follows:

[0042] .

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Abstract

The invention belongs to the technical field of chemical materials and environment protection, and in particular relates to waterborne epoxy anticorrosive paint and a preparation method thereof. The waterborne epoxy anticorrosive paint comprises components A and B; the component A comprises water, waterborne epoxy emulsion, anticorrosive pigment, packing and assistant; the component B comprises water, amino silane, nanosilicon dioxide and waterborne epoxy hardener. The preparation method comprises the steps of: mixing water and part of the assistant and stirring to uniformity, gradually adding the anticorrosive pigment and other packing, dispersing at high speeds, stirring the waterborne epoxy resin with part of the assistant to uniformity, and thereby obtaining the component A; mixing the water, the amino silane and the nanosilicon dioxide and dispersing at high speeds, further adding waterborne epoxy hardener to continuing dispersion, ball-milling, and thereby obtaining the component B. The waterborne epoxy anticorrosive paint has very low VOC, excellent physical and mechanical properties and good anticorrosion performance, and is applicable to using as anticorrosive paint for metal.

Description

technical field [0001] The invention belongs to the technical field of chemical materials, and in particular relates to a water-based epoxy anticorrosion coating and a preparation method thereof. Background technique [0002] The molecular structure of epoxy resin contains a large number of benzene rings and ether bonds, the system strength is high, the molecular structure is compact, and the cohesive energy is large. Therefore, the coating prepared by epoxy resin has strong adhesion to the substrate, chemical medium resistance and anti-corrosion performance. Excellent, widely used in the field of heavy anti-corrosion. [0003] At present, most of the anti-corrosion coatings on the market are solvent-based coatings, especially in the field of heavy anti-corrosion. Due to the presence of some hydrophilic components in water-based coatings, the anti-corrosion performance is reduced. However, as the requirements for environmental protection become more and more stringent, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/12
Inventor 徐杰顾广新许锋
Owner JIANGSU YICHENG BARRIER SCI & TECH
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