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Epoxy resin/montmorillonite nanometer composite paint used on metal surface and application of epoxy resin/montmorillonite nanometer composite coating

An epoxy resin and metal surface technology, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve the problems of inability to achieve anti-corrosion on metal surfaces, dirty anti-corrosion film layers on metal surfaces, slow curing and drying speed, etc. Curing drying speed, reducing the probability of self-corrosion phenomenon, the effect of accelerating drying speed

Active Publication Date: 2019-05-24
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional epoxy resin / montmorillonite composite membrane material has a slow curing and drying speed and a long time, and there is a certain degree of adhesiveness at the interface between the film and the metal, and at the interface between the film and the air, which makes the interface between the film and the air easy to stick and absorb fine dust. A series of impurities such as debris, water droplets and charged monomers, if exposed to the air for a long time, not only makes the anti-corrosion film on the metal surface look dirty, but also easily generates a small current between the metal-film-impurity and thus Accelerate the corrosion of metal, resulting in the inability to achieve the anti-corrosion effect of the metal surface

Method used

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  • Epoxy resin/montmorillonite nanometer composite paint used on metal surface and application of epoxy resin/montmorillonite nanometer composite coating
  • Epoxy resin/montmorillonite nanometer composite paint used on metal surface and application of epoxy resin/montmorillonite nanometer composite coating
  • Epoxy resin/montmorillonite nanometer composite paint used on metal surface and application of epoxy resin/montmorillonite nanometer composite coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Preparation of epoxy resin / montmorillonite nanocomposite film: Add 95 parts of epoxy resin E51, 2 parts of organically modified montmorillonite, and 15 parts of reactive diluent 669 into a 250 mL three-necked flask, stir well, and heat up to 80 ° C. Insulate and stir for 2 hours, then ultrasonically disperse at high temperature for 10 minutes, and then vacuum defoam for 10 minutes; after cooling to close to room temperature, add 50 parts of curing agent polyamide 650 and 3 parts of accelerator DMP-30 into the mixture, stir well and coat on The surface of the aluminum sheet was cured at room temperature for 48 hours to prepare an epoxy resin / montmorillonite nanocomposite film.

[0058] The SZ61 optical microscope of Olympus Company was used to characterize the epoxy resin / montmorillonite nanocomposite film, and the results were as follows: figure 2 It can be seen from the figure that the addition of organically modified montmorillonite is too little, the film layer is n...

Embodiment 2

[0060] Preparation of epoxy resin / montmorillonite nanocomposite film: Add 100 parts of epoxy resin E51, 3 parts of organically modified montmorillonite, and 15 parts of reactive diluent 669 into a 250 mL three-necked flask, stir well, and heat up to 80 ° C. Insulate and stir for 2 hours, then ultrasonically disperse at high temperature for 10 minutes, and then vacuum defoam for 10 minutes; after cooling to close to room temperature, add 50 parts of curing agent polyamide 650 and 3 parts of accelerator DMP-30 into the mixture, stir well and coat on The surface of the aluminum sheet was cured at room temperature for 48 hours to prepare epoxy resin / montmorillonite nanocomposites.

[0061] The SZ61 optical microscope of Olympus Company was used to characterize the epoxy resin / montmorillonite nanocomposite film, and the results were as follows: image 3 It can be seen from the figure that the addition amount of organically modified montmorillonite is more appropriate, and the compo...

Embodiment 3

[0063] Preparation of epoxy resin / montmorillonite nanocomposite film: Add 90 parts of epoxy resin E51, 4 parts of organically modified montmorillonite, and 15 parts of reactive diluent 669 into a 250 mL three-necked flask, stir well, and heat up to 80 ° C. Insulate and stir for 2 hours, then ultrasonically disperse at high temperature for 5 minutes, and then vacuum defoam for 10 minutes; after cooling to close to room temperature, add 50 parts of curing agent polyamide 650 and 3 parts of accelerator DMP-30 into the mixture, stir well and coat on The surface of the aluminum sheet was cured at room temperature for 48 hours to prepare epoxy resin / montmorillonite nanocomposites.

[0064] The SZ61 optical microscope of Olympus Company was used to characterize the epoxy resin / montmorillonite nanocomposite film, and the results were as follows: Figure 4 As shown, it can be seen from the figure that the amount of organically modified montmorillonite added is large, the film layer is ...

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Abstract

The invention relates to the technical field of anti-corrosion paint, in particular to epoxy resin / montmorillonite nanometer composite paint used on a metal surface. The epoxy resin / montmorillonite nanometer composite paint is prepared from, by weight, 80-120 parts of epoxy resin, 12-18 parts of a diluent agent, 40-60 parts of a curing agent, 0.1-3 parts of an accelerator and 1-5 parts of organicmodified montmorillonite. By means of the paint, the interface bonding strength between coating and metal is enhanced, and the coating is not prone to falling off from the metal surface, the problem that the contact interface of a film and air is adhesive is relieved, and the contact interface between the paint and the air is smooth and stable. Therefore, the probability that the film layer adsorbs and adheres to impurities in the air to cause a self-corrosion phenomenon is reduced, the film layer curing and drying speed is increased, the flexibility, the salt resistance and the acid resistance of the film layer are remarkably improved, and development of the aluminum alloy anti-corrosion industrial will be certainly promoted.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to an epoxy resin / montmorillonite nanocomposite coating for metal surfaces and its application. Background technique [0002] The research and development of aluminum alloy has improved the comprehensive performance of aluminum, so aluminum alloy is widely used in many aspects such as transportation, machinery manufacturing, aerospace and electrical components. Due to the poor corrosion resistance of aluminum alloy, it has brought certain troubles to its maintenance. Therefore, many anti-corrosion treatment processes for aluminum alloys have been developed correspondingly, such as passivation treatment technologies such as chromate, phosphate and molybdate, but there are serious environmental pollution problems, and these treatment processes are complex and costly. big. With the gradual improvement of environmental protection requirements and the enhancement of peo...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/62C08G59/44
Inventor 李国华刘书杰刘静袆吴世照高静
Owner ZHEJIANG UNIV OF TECH
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