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Wear-resistant smelting combined epoxy modified powder paint

A technology of fusion bonding and epoxy modification, applied in the field of coatings, can solve the problems of easy aging, corrosion resistance not meeting the requirements, poor matrix bonding force, etc., and achieve strong penetration resistance, high mechanical strength and chemical stability Good results

Inactive Publication Date: 2004-07-14
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many industries such as marine, chemical, chemical fiber, energy, electric power, metallurgy, nuclear power and military industries have harsh corrosive environments. The general domestic anti-corrosion coatings cannot meet the above requirements. For example, the corrosion resistance of traditional rubber lining technology cannot meet the requirements. , and it is easy to age in a corrosive environment; although polyolefin coatings have good corrosion resistance, they have poor bonding force, penetration resistance, and erosion resistance with the metal substrate; although the plastic lining has good chemical stability, it is not compatible with the substrate poor binding force, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The formulation of wear-resistant fusion-bonded epoxy modified powder coating is: resin E12 epoxy resin 50%, curing agent replaces dicyandiamide 3%, modifier polytetrafluoroethylene modifier 2% and filler SiO 2 +SiC margin. The performance of this wear-resistant fusion-bonded epoxy modified powder coating is as follows:

[0019] Coating and substrate bonding strength: 90MPa,

[0020] The mechanical strength of the coating itself: 24J,

[0021] The penetration resistance of the coating: 3.2%,

[0022] The amount of wear of the coating at a mass of 1000g at 5000 revolutions is 75mg.

Embodiment 2

[0024] The formulation of wear-resistant fusion-bonded epoxy modified powder coating is: resin E12 epoxy resin 60%, curing agent replaces dicyandiamide 5%, modifier polytetrafluoroethylene modifier 3% and filler SiO 2 +SiC margin. The performance of this wear-resistant fusion-bonded epoxy modified powder coating is as follows:

[0025] Coating and substrate bonding strength: 90MPa,

[0026] The mechanical strength of the coating itself: 23J,

[0027] The penetration resistance of the coating: 3.0%,

[0028] The abrasion of the coating is 70 mg at a mass of 1000 g at 5000 revolutions.

[0029] The measured cathodic disbondment resistance is between 1.5-4mm, which is much smaller than the 8mm standard used for heavy corrosion protection abroad. At the same time, this coating has a certain degree of micro water permeability, which ensures that the coating has micro currents during cathodic protection. Therefore, there will be no cathode shielding (CP) phenomenon.

Embodiment 3

[0031] The formula of wear-resistant fusion-bonded epoxy modified powder coating is: resin E12 epoxy resin 70%, curing agent replaces dicyandiamide 5%, modifier polytetrafluoroethylene modifier 4% and filler SiO 2 +SiC margin. The performance of this wear-resistant fusion-bonded epoxy modified powder coating is as follows:

[0032] The bonding force between the coating and the substrate is 92MPa,

[0033] The mechanical strength of the coating itself is 19J,

[0034] The penetration resistance of the coating is 3.0%,

[0035] The amount of abrasion of the coating at a mass of 1000 g at 5000 revolutions is 77 mg.

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Abstract

The wear-resistant modified powder paint consists of E12 epoxy resin 50-70 wt%, curing agent of substituted cyanoguanidine 3-6 wt%, modifier of tetrafluoride 1-5 wt% and stuffing of SiO2+SiC accounting for the rest amount. The paint coating of the present invention has a abrasion loss less than 80 mg / 1000 g under the action of 5000 turns.

Description

Technical field: [0001] The invention relates to a paint, a powder paint containing epoxy resin. Background technique: [0002] Usually to solve the problem of heavy corrosion protection, there are mainly the following methods: optimization design of material structure, redevelopment of material, surface modification of material, cathodic protection and organic coating. [0003] Organic coating protection technology is a widely used metal anti-corrosion method. It has the characteristics of economy, fast, labor-saving, and convenient, and has become one of the most economical methods for controlling material corrosion. [0004] At present, many industries such as marine, chemical, chemical fiber, energy, electric power, metallurgy, nuclear power and military industries have harsh corrosive environments. The general anti-corrosion coatings in China cannot meet the above requirements, such as the traditional rubber lining technology. , And easy to age in a corrosive environment; al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/03C09D163/00
Inventor 李京陆卫忠史杰智高英李晓东
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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