Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A kind of epoxy self-repairing rust coating and preparation method thereof

A kind of rusty coating and epoxy technology, which is applied in the coating field, can solve the problems of easy foaming and coating failure of the coating, and achieve the effect of good dispersion, compatibility and good storage stability

Active Publication Date: 2016-08-24
STATE GRID CORP OF CHINA +2
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if phosphoric acid is used in solvent-based coatings, it will bring many problems, such as the compatibility of moisture in phosphoric acid with the film-forming substances of solvent-based coatings. layer premature failure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of epoxy self-repairing rust coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] Preparation of coated solid phosphoric acid composition:

[0033] Add 40kg of coupling agent, 40kg of metaphosphoric acid, and 20kg of manganese dihydrogenphosphate into the reaction kettle, and stir for 0.5h at a rotational speed of 1200rpm. Then put it into a ball mill and grind for 10 h until the fineness reaches 38 microns. The material is then filtered, dried at 90° C. for 8 hours, ground, and passed through a 325-mesh sieve to obtain a coated solid phosphoric acid composition.

[0034] Preparation of epoxy self-repairing rust coating:

Embodiment 1

[0038] Add 4.5kg of the above-mentioned coated solid phosphoric acid composition to the reactor under stirring, then add 64kg of E20 epoxy resin (solid content 75%), 0.5kg of Disperbyk ® -160 dispersant, 0.5kg JF-38 anti-sedimentation agent, 15.5kg xylene and 15kg titanium dioxide, stirred for 40 minutes; then these epoxy resin mixtures were ground to obtain component 1 of epoxy self-repairing rust coating; Dissolve 50kg 8115 polyamide resin curing agent in 50kg toluene in another reaction kettle to make component two of epoxy self-repairing rust coating; Divide into two parts and add to component one, and cure for 7 days at room temperature to form an epoxy self-repairing rust coating.

Embodiment 2

[0040] Add 0.8kg of the above-mentioned coating solid phosphoric acid composition to the reactor under stirring, then add 64kg of E20 epoxy resin (solid content 75%), 0.5kg of Disperbyk ® -160 dispersant, 0.5kg JF-38 anti-sedimentation agent, 19.2kg xylene and 15kg titanium dioxide, stirred for 40 minutes; then these epoxy resin mixtures were ground to obtain component 1 of epoxy self-repairing rust coating; Dissolve 50kg 8115 polyamide resin curing agent in 50kg toluene in another reaction kettle to make component two of epoxy self-repairing rust coating; Divide into two parts and add to component one, and cure for 7 days at room temperature to form an epoxy self-repairing rust coating.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides self-repair epoxy residual rust paint and a preparation method thereof. The self-repair epoxy residual rust paint comprises epoxy resin, a solid phosphoric acid composition, auxiliaries, solvents, curing agents and the like. The preparation method is characterized by coating the solid phosphoric acid composition by utilizing a coupling agent and then preparing the self-repair epoxy residual rust paint with the coated solid phosphoric acid composition. The paint has very strong rust layer transformation capacity and can be widely applied to anti-corrosion construction of steel structure parts on which rust layers are difficult to completely remove.

Description

technical field [0001] The invention relates to a preparation method of an epoxy self-repairing rusty coating, which belongs to the technical field of coatings. Background technique [0002] Most of the existing rusty coatings contain chromate or chromic acid coordination compounds. When these compounds are hydrolyzed, they generate heteropolyacids, which react with rust to form stable complexes that inhibit rust growth. Disclosed as CN101698776A is a kind of band rust coating for oil well pipe, the raw material composition of this coating comprises alkyd resin, leveling agent, defoamer, dispersant, thickener, drier, anti-skinning agent, adhesion promoter , Iron oxide red powder, carbon black, zinc phosphate, calcium carbonate, rust inhibitor powder and solvent. Rust inhibitor powder is diphenylguanidine chromate. Due to the restriction of environmental regulations, the use of paints containing hexavalent chromium will be prohibited. [0003] Researchers are stepping up r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/02C09D5/08C09D7/12
Inventor 尹桂来涂湛唐囡万军彪刘福春韩恩厚
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products