Preparation method of base material used for epoxy acrylic acid anticorrosion paint

An anti-corrosion coating, epoxy acrylic technology, applied in anti-corrosion coatings, coatings and other directions, can solve the problems of easy color bleeding, water resistance decline and so on

Inactive Publication Date: 2010-02-17
JIANGSU RONGCHANG NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The siloxane group is introduced into the coating, and the hydrolysis condensation crosslinking of siloxane overcomes the existing epoxy acrylic resin because the epoxy group and hydroxyl group on the epoxy resin do not participate in the crosslinking reaction, and there are a large number of active groups. And lead to the shortcomings of water resistance decline; the introduction of an appropriate amount of strong polar groups overcomes the shortcomings of existing epoxy acrylic resins that are easy to bleed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Add 80 grams of mixed solvent into the reaction vessel, raise the temperature to 115 ° C, add epoxy resin according to the amount of Example 1 in the above table, keep it warm for 1 hour, mix 0.8 grams of initiator with all acrylate monomers, organic silicon The monomer and p-nitrophenol methacrylate are mixed and stirred evenly, then added to the above system, the addition is completed in 2.5 to 3.0 hours, and then kept for 1 hour, then the remaining 0.2 grams of the initiator is dissolved in 20 grams of the mixed solvent, and then added In the reaction vessel, the addition was completed in 1 hour, and after another 3 hours of heat preservation, after cooling down, the composite modified acrylic resin base material of epoxy, organic silicon and nitro was prepared, and the solid content of the resin was 50 wt%.

Embodiment 2

[0015] Example 2: Add 80 grams of mixed solvent into the reaction vessel, raise the temperature to 115 ° C, add epoxy resin according to the amount of Example 2 in the above table, keep it warm for 1 hour, mix 1.0 grams of initiator with all acrylate monomers, organic silicon The monomer and p-nitrophenol methacrylate are mixed and stirred evenly, then added to the above system, the addition is completed in 2.5 to 3.0 hours, and then kept for 1 hour, then the remaining 0.2 grams of the initiator is dissolved in 20 grams of the mixed solvent, and then added In the reaction vessel, the addition was completed in 1 hour, and after another 3 hours of heat preservation, after cooling down, the composite modified acrylic resin base material of epoxy, organic silicon and nitro was prepared, and the solid content of the resin was 50 wt%.

Embodiment 3

[0016] Example 3: Add 80 grams of mixed solvent into the reaction vessel, heat up to 125 ° C, add epoxy resin according to the amount of Example 3 in the above table, keep it warm for 1 hour, mix 0.8 grams of initiator with all acrylate monomers, organic silicon The monomer and acrylonitrile are mixed and stirred evenly, then added to the above system, the addition is completed in 2.5 to 3.0 hours, and then kept for 1 hour, then the remaining 0.2 grams of initiator is dissolved in 20 grams of mixed solvent, and then added to the reaction vessel for 1 hour After adding, keep warm for another 3 hours and cool down to prepare epoxy, organic silicon and acrylonitrile composite modified acrylic resin base material, the resin solid content is 50wt%.

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PUM

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Abstract

The invention relates to a method for preparing an epoxy acrylic acid anticorrosive coating, which comprises the following steps: firstly, an epoxy, organic silicon and nitryl or cyano composite modified acrylic acid resin base material is prepared, and then the base material is used to prepare the coating. A siloxane group is introduced into the epoxy acrylic acid resin base material, and a resinis film-formed and then is crosslinked due to the fact that siloxane is subjected to hydrolytic condensation, thereby overcoming the defect that the prior epoxy acrylic acid resin coating has a largequantity of active groups due to the fact that an epoxy group and a hydroxide radical on the epoxy resin do not participate in a crosslinking reaction, which causes the water resistance to be reduced; and a proper amount of strongly polar groups (-NO2 or -CN) are introduced, thereby overcoming the defect that the prior epoxy acrylic acid resin coating is easy for bleeding, and ensuring that the color of finish coat is not affected when the coating is matched with the light colored finish coat.

Description

technical field [0001] The invention relates to a base material for epoxy acrylic anticorrosion paint and a preparation method thereof. The base material has a siloxane group and a strong polar group. Background technique [0002] Traditional thermoplastic acrylic coatings have the characteristics of convenient construction and good dryness, but their water resistance, heat and humidity resistance, chemical corrosion resistance and mechanical properties 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 reaction of epoxy resin and acrylic resin or cold spelling can improve the mechanical properties of the film-forming material, but the epoxy group and hydroxyl group on the epoxy resin do not participate in the cross-linking reaction. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/04C09D5/08
Inventor 黄顺道常春陈群
Owner JIANGSU RONGCHANG NEW MATERIAL TECH
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