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Preparation method of rosin-based long oil alkyd resin anticorrosive enamel with high pitting potential

A long-oil alkyd, anti-corrosion enamel technology, applied in the field of enamel, can solve the problems of low pitting corrosion resistance, large intermolecular force, inappropriate matching, etc.

Inactive Publication Date: 2019-09-20
GUANGXI UNIV FOR NATITIES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many hydrogen bonds in the alkyd resin macromolecules, and the intermolecular force is large, which can be cross-linked with many compounds to form a film. Corrosion resistance, permeability resistance, wear resistance and good adhesion, etc., but there are many variable factors for crosslinking with alkyd resin to form a film. At present, due to the inappropriate matching of selected monomers and alkyd resin, the Corrosion potential is low, therefore, pitting resistance is not very high, can not meet the needs of the actual harsh environment

Method used

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  • Preparation method of rosin-based long oil alkyd resin anticorrosive enamel with high pitting potential

Examples

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Embodiment 1

[0012] 1. Treatment of 6063 aluminum alloy sheet

[0013] The 6063 aluminum alloy sheet was polished with 1.0 μm and 0.3 μm alumina powder on a polishing cloth in turn, then placed in 5% hydrochloric acid for 5 minutes, then placed in deionized water for 5 minutes, and finally placed in anhydrous Sonicated in ethanol for 6 min and dried for later use.

[0014] 2. Preparation of anti-corrosion enamel with and without acrylpimaric acid (ethylenediamine) amide

[0015] Add 25 parts by weight of dry long-oil alkyd resin, 2 parts by weight of acrylpimaric acid (ethylenediamine) amide and 20 parts by weight of isobutanol solvent into the reaction tank and stir evenly, and then continue to add 15 parts by weight Talc powder, 10 parts by weight of bentonite, 2 parts by weight of dispersant polyethylene glycol 200, 2 parts by weight of leveling agent polyether modified polydimethylsiloxane interpolymer, 1 part by weight of drier Add the iron salt of naphthenic acid together in the re...

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Abstract

The invention discloses a preparation method of rosin-based long oil alkyd resin anticorrosive enamel with high pitting potential. According to the preparation method, dry long oil alkyd resin and propylene pimaric acid (ethylenediamine) amide serve as film-forming substances, isobutanol serves as a solvent, active calcium carbonate, bentonite, dispersant polyethylene glycol 200, leveling agent polyether modified polydimethylsiloxane copolymers and drier naphthenic acid iron salt are added, and after high-speed stirring, the rosin-based long oil alkyd resin anticorrosive enamel with the high pitting potential can be obtained. The enamel has high pitting potential and high pitting resistance, and can be applied to anti-corrosion projects in the fields such as metal railings of house balconies, petrochemical equipment, pipelines, offshore oil platforms, dock facilities and ships.

Description

technical field [0001] The invention relates to the field of enamel, in particular to a method for preparing a rosin-based long-oil alkyd resin anticorrosive enamel with high pitting corrosion potential. Background technique [0002] Due to the low pitting potential of petrochemical equipment, pipelines, offshore oil platforms, ships and other metal material equipment, they are extremely vulnerable to corrosion by the atmospheric environment, especially the parts of ship equipment below the waterline due to long-term immersion in corrosive media such as sodium chloride It is easy to cause pitting, foaming, cracking and shedding. . The current treatment method is to add a large amount of heavy metal compounds such as lead tetraoxide to the paint formula. However, these heavy metal lead plasmas are continuously precipitated in this type of anti-corrosion coating, which seriously pollutes the ocean, river and soil environment, and affects the global ecological environment and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D5/08C09D7/20C09D7/61
CPCC09D5/08C09D7/20C09D7/61C09D167/08C08K3/34C08K3/346
Inventor 石展望李浩余会成韦冬萍韦贻春
Owner GUANGXI UNIV FOR NATITIES
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