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Bicomponent epoxy resin coating and preparation method thereof

A technology of epoxy resin coating and epoxy resin, applied in the direction of epoxy resin coating, fireproof coating, coating, etc., can solve the problems of unsatisfactory protective effect of aluminum alloy, accelerated corrosion of base material, local corrosion of base metal, etc. Achieving good film-forming performance, saving energy, and simple proportioning

Inactive Publication Date: 2010-07-21
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, if the protective coating has construction defects or is damaged in an outdoor environment, the exposure of the base metal will inevitably lead to local corrosion of the base metal, and the shielding effect of the coating will instead form a closed corrosion zone, resulting in deterioration of the local environment and accelerating the corrosion of the base material , and eventually lead to corrosion problems such as blistering and peeling of the coating, such as filiform corrosion (Filiform Corrosion) on the surface of metal spraying varnish
Although the cathodic protection coating has good protection performance for steel materials, it is not ideal for aluminum alloy protection.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] For component A, first add 1wt.% cerium nitrate hexahydrate repair agent to the batching tank, then add 50wt.% (D.E.R.351) bisphenol A and bisphenol F epoxy resin in turn, 15wt.% is made of An inert diluent mixed solution composed of xylene, benzene, acetone (1:1:2), 5wt.% glycidyl capric acid active diluent, 24wt.% titanium dioxide anatase (BA01-01) mineral type active pigment , 4.5wt.% nano-anatase titanium dioxide filler, 0.5wt.% simethicone defoamer, stirring while discharging, then disperse at low speed (1000rad / min) for 30 minutes, then at high speed (2220rad / min) dispersed for 10 minutes, finally filtered, sampled and tested to pass the packaging;

[0050] For component B, add 95wt.% of diethylenetriamine curing agent and 5wt.% rare earth fatty acid and rare earth naphthenic acid complex drier into the batching tank, stir to make it evenly mixed, and then set it at low speed (1000rad / min) disperse for 30 minutes, then disperse at high speed (2220rad / min) for 10 m...

Embodiment 2

[0057] For component A, first add 1wt.% cerium nitrate hexahydrate repair agent to the batching tank, then add 55wt.% (D.E.R.383) bisphenol A epoxy resin in turn, 10wt.% made of xylene, benzene , the inert diluent mixed solution that acetone (1: 1: 2) forms, the glycidyl capric acid active diluent of 5wt.%, the titanium dioxide anatase (BA01-01) mineral type active pigment of 23wt.%, 5wt.% Aluminum oxide filler, 1wt.% simethicone defoamer, stirring while discharging, then disperse at low speed (1400rad / min) for 20 minutes, then disperse at high speed (2180rad / min) for 20 minutes, and finally Pack after filtering, sampling and testing;

[0058] For component B, add 95wt.% triethylenetetramine curing agent and 5wt.% fatty acid manganese salt drier to the batching tank, stir to make it evenly mixed, and then disperse at low speed (1400rad / min) for 20 minutes, then Disperse at high speed (2180rad / min) for 20 minutes, and finally filter and take a sample to test and pack after pas...

Embodiment 3

[0065] For component A, first add 0.5wt.% cerium nitrate hexahydrate repair agent to the batching tank, then add 60wt.% (D.E.R.351) bisphenol A and low-viscosity bisphenol F type low-viscosity epoxy resin, 8wt.% inert diluent mixed solution composed of xylene, benzene, acetone (1:1:2), 2wt.% glycidyl capric acid active diluent, 21.5wt.% titanium dioxide anatase (BA01- 01) Mineral-type active pigment, 7.3wt.% antimony trioxide filler, 0.7wt.% simethicone defoamer, stirring while discharging, and then dispersing at low speed (1200rad / min) for 25 minutes, Then disperse at high speed (2200rad / min) for 15 minutes, and pack after filtering and sampling to pass the test;

[0066] For component B, add 95wt.% diethylenetriamine curing agent and 5wt.% fatty acid cerium salt drier into the batching tank, stir to make it evenly mixed, and then disperse at low speed (1200rad / min) for 25 minutes, Then disperse at high speed (2200rad / min) for 15 minutes, and finally filter and take a sample...

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Abstract

The invention discloses a bicomponent epoxy resin coating and a preparation method thereof, comprising a component A and a component B, wherein the component A consists of epoxy resin, a diluent, a restoring agent, pigment, filler and a defoaming agent; the component B consists of a curing agent and a catalyst; and the component A and the component B are mixed according to the weight ratio of 3.5-8:1. The bicomponent epoxy resin coating are packaged separately, has simple preparation, convenient use and stable storage performance and has good film-forming performance under normal temperature;the restoring agent of soluble rare soil compound is adopted to be combined with organic resin to lead soluble rare soil ions to be freely deposited at the corroded position of a metal base body so as to stop the metal base body from being further corroded, thus leading the bicomponent epoxy resin coating to have self-restoring characteristic; and simultaneously, the coating has simple preparation method, is suitable for industrial production, saves the energy consumption and reduces the cost.

Description

technical field [0001] The invention belongs to the field of chemical anticorrosion, and in particular relates to a two-component epoxy resin coating with self-repairing performance and a preparation method thereof. Background technique [0002] There are three main functions of coatings: decoration, protection, and special functions. Almost all coatings have the first two functions. The protective effect of coating on metal mainly has three aspects: shielding effect, corrosion inhibition effect and cathodic protection effect. [0003] 1. Shielding effect [0004] After good construction, the paint covers the metal surface and can effectively isolate the metal from contact with the external corrosive environment. That is to say, the coating prevents the corrosive media in the atmosphere from corroding the metal. All coatings have a basic shielding effect. [0005] 2. Corrosion inhibition [0006] The anti-rust effect of the anti-rust primer depends largely on the effec...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D7/12C09D5/18
Inventor 周明杰孙道明
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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