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Solvent-free epoxy coating

An epoxy coating, solvent-free technology, applied in the field of coatings, can solve the problems of paint film flatness, adhesion and flexibility that cannot meet the requirements, achieve high hardness, strong adhesion, and improve production efficiency

Inactive Publication Date: 2010-05-12
JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing solvent-free epoxy anti-corrosion coatings are applied to the anti-corrosion of the welding joints of petroleum transportation steel pipelines, the properties of paint film flatness, adhesion and flexibility cannot meet the requirements.

Method used

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  • Solvent-free epoxy coating
  • Solvent-free epoxy coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A solvent-free epoxy coating, characterized in that: it is obtained by grinding and stirring 50 parts of epoxy resin, 10 parts of toughening agent, 5 parts of pigment, 15 parts of filler and 2 parts of auxiliary agent, in parts by weight;

[0028] The epoxy resin is bisphenol A type epoxy resin; the toughening agent is polysulfide rubber; the pigment is iron red; the filler is talcum powder; the auxiliary agent is an organic silicone defoamer, Organic silicone leveling agent, dispersant, coupling agent, polymerization inhibitor and abrasive agent.

Embodiment 2～6

[0030] A solvent-free epoxy coating, its components, content and performance parameters are shown in Table 3, and the others are the same as in Example 1.

[0031] Each component, content and performance parameter in table 3 embodiment 2~6, content is by weight

[0032]

[0033]

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PUM

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Abstract

The invention provides a solvent-free epoxy coating, which is prepared by grinding and stirring the following components in part by weight: 30 to 70 parts of epoxy resin, 2 to 20 parts of toughening agent, 15 to 50 parts of color filler, and 0.2 to 5 parts of auxiliary agent. The solvent-free epoxy coating adopts the epoxy resin as a film-forming material, and because any reactive diluent is not added at all, the solvent-free epoxy coating is not volatile, has the water absorption of less than 0.6 percent, good chemical stability, strong adhesive force and high hardness. The solvent-free epoxy coating is very convenient in construction, can be used for brush painting after an initiator and a promoter is added in the solvent-free epoxy coating and the mixture is stirred evenly, and after the solvent-free epoxy coating is coated on a steel pipe and is solidified, the impact strength of the steel pipe can reach over 30 Kg.cm.

Description

technical field [0001] The invention relates to a paint, in particular to a solvent-free epoxy paint. Background technique [0002] In the prior art, coatings are generally composed of film-forming resins, diluents, additives and / or auxiliary materials. The anti-corrosion effect of coatings mainly includes shielding effect, passivation corrosion inhibition effect and electrochemical protection effect. The coating coated on the metal surface isolates the corrosive medium and plays an anti-corrosion effect. However, general anti-corrosion coatings contain solvents. During the film formation process, the solvents volatilize to form pinholes, which penetrate water, oxygen and corrosive media and cause corrosion under the film. The expansion of corrosion products breaks the coating, and the medium diffuses along the coating, causing the coating to fall off in flakes and lose its anti-corrosion effect. [0003] With the development of the national economy, the improvement of peo...

Claims

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Application Information

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IPC IPC(8): C09D163/02C09D163/04C09D7/12
Inventor 张志强饶学武
Owner JIANGSU DASHENG HEAT SHRINKABLE MATERIALS
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