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Thin-coating two-component anticorrosive coating for surface of precise steel structural part and preparation method thereof

A technology for anti-corrosion coatings and steel structural parts, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as poor shielding and porosity defects, and achieve high production efficiency, increased resin content, and good shielding effects.

Inactive Publication Date: 2018-07-20
MARINE CHEM RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The coating of the present invention adopts thin-layer flaky anti-corrosion pigments, which can be thinly coated to about 10-15 microns, and has a unique graphene treatment method. The coating has excellent cathodic protection effect, and the anti-corrosion efficiency is obviously improved, and the resin content in the paint film is greatly improved. Improvement, improved coating density, good shielding performance, and solved the technical bottleneck of more pores and poor shielding performance caused by ordinary graphene coatings due to the limitation of less resin consumption

Method used

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  • Thin-coating two-component anticorrosive coating for surface of precise steel structural part and preparation method thereof
  • Thin-coating two-component anticorrosive coating for surface of precise steel structural part and preparation method thereof
  • Thin-coating two-component anticorrosive coating for surface of precise steel structural part and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1: prepare a kind of dispersion stable graphene slurry

[0048]

[0049] The preparation method of graphene slurry is: add the solvent of formula quantity in the container, place under high-speed stirring, the rotating speed is 1000r / min, put the container in the ultrasonic oscillator that power is 240w to carry out ultrasonic oscillation at the same time, under stirring state successively Add the formulated amount of FX9086 and graphene, disperse for 30 minutes, then add anti-sedimentation agent BYK-410, and continue stirring for 30 minutes to obtain a stable graphene slurry.

[0050] The graphene slurry prepared in this example is a gray-black viscous mixture with a viscosity of 600 mPa.s and a storage stability period of 6 months.

Embodiment 2

[0051] Embodiment 2: prepare a kind of dispersion stable graphene slurry

[0052]

[0053] The preparation method of graphene slurry is: add the solvent of recipe amount in the container, place under high-speed stirring, the rotating speed is 1000r / min, put the container into the ultrasonic oscillator that power is 800w to carry out ultrasonic oscillation at the same time, under stirring state successively Add the formulated amount of BYK-110 and graphene, disperse for 20 minutes, add anti-sedimentation agent BENGEL958 and continue stirring for 20 minutes to obtain a stable graphene slurry.

[0054] The graphene slurry prepared in this example is a gray-black viscous mixture with a viscosity of 400 mPa.s and a storage stability period of 6 months.

Embodiment 3

[0055] Embodiment 3: A kind of preparation based on graphene-modified epoxy zinc powder coating that can be thinly coated

[0056] The composition of component A is as follows:

[0057]

[0058]

[0059] The preparation method of component A is: add the epoxy resin liquid, graphene slurry, pigments and fillers, additives and diluents according to the above formula into the stirring container, and stir at a speed of 2000r / min for 30min until uniformly dispersed; Continue to stir the zinc powder for 30min until it is uniformly dispersed, filter through a sieve, measure and pack, and obtain component A (color paste);

[0060] The formula composition of B component is as follows:

[0061] The polyamide is mixed with xylene, n-butanol and cyclohexanone according to the following ratio, and stirred and dissolved to prepare component B (curing agent).

[0062]

[0063] A and B components are mixed and prepared at a weight ratio of 6:1.

[0064] Coatings are applied by spr...

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Abstract

The invention provides a thin-coating two-component anticorrosive coating for the surface of a precise steel structural part, wherein the two-component anticorrosive coating is composed of a componentA and a component B. The component A is composed of an epoxy resin liquid, graphene slurry, a zinc powder, flaky pigments and fillers, an auxiliary agent and a diluent. The component B is composed ofa polyamide curing agent and a mixture of xylene, n-butanol and cyclohexanone. The component A and the component B are evenly mixed according to the weight ratio of (5-15):1. The graphene slurry is prepared by adding powdery graphene and a dispersant into a mixed solvent under a stirring state, and dispersing in an ultrasonic oscillator to obtain the stable dispersed slurry. A coating layer has excellent cathodic protection effect, can be thin-coated to about 10-15 microns, still has good corrosion resistance, and can partly replace traditional phosphorization and oxidation processes.

Description

technical field [0001] The invention belongs to the field of heavy-duty anti-corrosion coatings, and in particular relates to a closed-type epoxy zinc powder coating based on sheet materials such as graphene for anti-corrosion protection of precision steel structures and a preparation method thereof. Background technique: [0002] At present, the mature anti-corrosion coatings widely used in the market mainly include alkyd, epoxy, polyurethane and zinc-rich coatings. Among them, the zinc-rich supporting system has the longest anti-corrosion effect, which can reach more than ten years, due to its good cathodic protection, excellent water resistance and self-repairing function of the paint film. It is a high-performance, multi-purpose heavy-duty anti-corrosion coating recognized by the industry. It is widely used in petrochemical, marine facilities, shipbuilding and other fields. [0003] The zinc powder content is closely related to its anti-corrosion effect, which directly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/10C09D7/61C09D7/65
CPCC09D163/00C08K7/00C08K2201/003C08K2201/014C09D5/106
Inventor 关迎东戴加龙赵乐候晓燕孙春龙杨凯郭常青方倩
Owner MARINE CHEM RES INST
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