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A kind of solvent-free epoxy coal tar anticorrosion coating and its preparation method and application

A technology of anti-corrosion coatings and coal tar, which is applied in the direction of anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of difficult coating and rusty surfaces, poor resistance to cathodic disbondment, etc., to improve cathodic disbondment resistance, Excellent anti-corrosion, avoiding the effect of derusting steps

Active Publication Date: 2018-05-11
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The solvent-free epoxy coal tar anti-corrosion coating provided by the prior art is not easy to be coated on the rusty surface of the substrate, and has poor resistance to cathodic disbonding

Method used

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  • A kind of solvent-free epoxy coal tar anticorrosion coating and its preparation method and application
  • A kind of solvent-free epoxy coal tar anticorrosion coating and its preparation method and application

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preparation example Construction

[0036] In a second aspect, an embodiment of the present invention provides a method for preparing the above-mentioned solvent-free epoxy coal tar anti-corrosion coating, including:

[0037]Preparation of the first component: according to the weight ratio of each component in the above-mentioned first component, bisphenol A type epoxy resin, bisphenol F type epoxy resin, novolac epoxy resin, petroleum resin, reactive diluent and coal Mix the tar evenly to obtain the first mixture, add wet-process sericite, talc powder, barite, carbon black, aluminum silver paste, ferrophosphorus powder, clay and silicone oil to the first mixture and perform high-speed dispersion treatment 1-4 Minutes to obtain the second mixture, which is ground to obtain the first component;

[0038] Preparation of the second component: According to the weight ratio of each component in the second component, the cashew nut shell oil modified phenalkamine curing agent and the low molecular weight polyamide resi...

Embodiment 1

[0048] Present embodiment provides a kind of solid content and be 100% solvent-free epoxy coal tar anticorrosion paint, comprise first component and second component:

[0049] Wherein, the first component includes: 1 weight part of bisphenol A type epoxy resin, 0.5 weight part of bisphenol F type epoxy resin, 0.2 weight part of novolac epoxy resin, 0.1 weight part of petroleum resin, 0.1 weight part Parts of reactive diluent, 0.3 parts by weight of coal tar, 1 part by weight of wet-process sericite, 2 parts by weight of talc, 1.5 parts of barite, 0.005 parts by weight of carbon black, 0.01 parts by weight of aluminum silver slurry, 0.1 parts by weight of ferrophosphorus powder, 0.01 parts by weight of clay, and 0.001 parts by weight of silicone oil.

[0050] The second component includes: 0.2 parts by weight of cashew nut shell oil modified phenalkamine curing agent and 1 part by weight of low molecular weight polyamide resin curing agent.

[0051] The coating is prepared by ...

Embodiment 2

[0055] The present embodiment provides a kind of solvent-free epoxy coal tar anticorrosion coating that solid content is 100%, comprises the first component and the second component: Wherein the first component comprises: the bisphenol A type epoxy of 1 weight part Resin, the bisphenol F type epoxy resin of 1 weight part, the novolak epoxy resin of 0.5 weight part, the petroleum resin of 0.3 weight part, the reactive diluent of 0.5 weight part, the coal tar of 0.6 weight part, the wet French sericite, talc powder of 1.6 parts by weight, barite of 1 part by weight, carbon black of 0.01 parts by weight, aluminum-silver paste of 0.02 parts by weight, ferrophosphorus powder of 0.05 parts by weight, pottery clay of 0.01 parts by weight, 0.002 parts by weight parts of silicone oil;

[0056] The second component includes: 0.05 parts by weight of cashew nut shell oil modified phenalkamine curing agent and 1 part by weight of low molecular weight polyamide resin curing agent.

[0057]...

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Abstract

The invention discloses a solvent-free epoxy coal tar anti-corrosion coating, a preparation method and application thereof, and belongs to the field of coating anti-corrosion. The coating comprises a first component: 1 part by weight of bisphenol A type epoxy resin, 0.5-1.5 part by weight of bisphenol F type epoxy resin, 0.1-1 part by weight of phenolic epoxy resin, 0.1-1 part by weight petroleum resin, 0.1-1 parts by weight active diluent, 0.1-1 parts by weight coal tar, 1-2 parts by weight wet sericite, 1-2 parts by weight talc, 1-2 parts by weight spar, 0.005-0.05 part by weight of carbon black, 0.01-0.1 part by weight of aluminum silver paste, 0.01-0.1 part by weight of iron phosphorus powder, 0.01-0.1 part by weight of clay, 0.001-0.01 part by weight of silicone oil, and a second Component: 0.01-0.2 parts by weight of cashew nut shell oil modified phenalkamine curing agent and 1 weight part of low molecular weight polyamide resin curing agent. The anti-corrosion coating of the invention has a solid content of 100 percent, which can effectively improve the resistance to cathodic disbondment of the coating and the adhesion between the coating and the rusted substrate.

Description

technical field [0001] The invention relates to the technical field of anticorrosion, in particular to a solvent-free epoxy coal tar anticorrosion coating and a preparation method thereof. Background technique [0002] Epoxy coating is a coating with epoxy resin as the main film-forming substance. Because of its excellent anti-corrosion and mechanical properties, it is often used to coat the surface of steel structure substrates for anti-corrosion. Currently commonly used epoxy coatings are mostly prepared by dissolving epoxy resin in a solvent, and its solid content is usually lower than 98%. However, during use, a large amount of solvent volatilization not only easily pollutes the environment, but also affects the performance of the prepared coating, for example, causing pinholes in the coating, thereby reducing its anti-corrosion performance. In order to solve the above problems, it is necessary to provide a solvent-free epoxy anticorrosion coating. [0003] For example...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61C09D7/65
Inventor 刘浩亮郭晓军张其滨段绍明崔灿灿韩忠智李石张静
Owner BC P INC CHINA NAT PETROLEUM CORP