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Anticorrosive epoxy acrylic paint

An epoxy acrylic, anti-corrosion coating technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of slow drying, water resistance, chemical resistance difficult to meet requirements, mechanical properties, water resistance and other problems

Inactive Publication Date: 2003-01-08
JIANGSU RONGCHANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Traditional thermoplastic acrylic coatings have the characteristics of convenient construction and good drying performance, but their mechanical properties and water resistance are not ideal, so they have been used as topcoats for a long time, while primers generally use alkyd, epoxy, polyurethane and other coating systems
However, these systems dry slowly during use and cannot meet the requirements of on-site construction.
The epoxy-modified acrylic resin made by reacting epoxy resin with acrylic resin or cold splicing improves the mechanical properties of the film-forming material. However, the epoxy group and hydroxyl group on the epoxy resin do not participate in cross-linking, so that the The water resistance and chemical resistance of the coating composed of it are difficult to meet the requirements after the film is formed. In addition, when using this epoxy-modified acrylic coating as a primer, if the color of the top coat is light and the color of the primer is dark, it is easy to Bleeding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1～3

[0017] Use a balance to weigh each component according to the formula shown in Table 1 for subsequent use. Soak the pigment in a solvent for 1 hour, add base material and dispersant, pre-mix with a high-speed disperser for 10-15 minutes, then grind and disperse with a sand mill until the fineness is less than 40 μm, filter and pack.

example 1

[0023] Base material in example 1: pigment: solvent: dispersant is 20.00: 33.4: 44.30: 0.50, and wherein the ratio of cathode and anode corrosion-inhibiting pigment is 100: 15.94;

example 2

[0024] Base material in example 2: pigment: solvent: dispersant is 20.00: 30.026: 44.00: 0.50, and wherein the ratio of negative and negative corrosion-inhibiting pigments is 100: 28.94;

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PUM

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Abstract

The invention relates to epoxy crylic acid anti-corrosino paint, it is made up of base material, pigment, solvent and dispersant, the resin used as base material is epoxy acroid resin which contains silica alkyl and high strength polar radicel, acid value of the resin is 3-8, epoxy equivalent is 0.02-0.50, under 25 deg.C and 50% solid shares, the viscosity of the resin is 400-1500 mPa.s, the content of epoxy in molecular is 2-10%, the content of silica alkyl is 0.3-3.5%, the content of high strength polar radicel is 2-10%; What used as pigment is compound antirust pigment which is made up of chemical antirust pigment and physical antirust pigment, the weight proportion of each element in the paint is as follows: base material (counted by solid) 20-25, pigment 28-40, solvent 40-45, dispersant 0.4-6, it can be used as primer.

Description

technical field [0001] The invention relates to an epoxy acrylic anticorrosion coating, which is especially suitable for use as a primer. Background technique [0002] Traditional thermoplastic acrylic coatings have the characteristics of convenient construction and good drying performance, but their mechanical properties and water resistance are not ideal, so they have been used as topcoats for a long time, while primers generally use alkyd, epoxy, polyurethane and other coating systems . However, these systems dry slowly during use and cannot meet the requirements of on-site construction. The epoxy-modified acrylic resin made by reacting epoxy resin with acrylic resin or cold splicing improves the mechanical properties of the film-forming material. However, the epoxy group and hydroxyl group on the epoxy resin do not participate in cross-linking, so that the The water resistance and chemical resistance of the coating composed of it are difficult to meet the requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D133/14
Inventor 常春周海清徐子清
Owner JIANGSU RONGCHANG NEW MATERIAL TECH
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