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Anticorrosive coating material with physically stripped graphene and method for preparing anticorrosive coating material

A technology of physical peeling and anti-corrosion coating, applied in anti-corrosion coatings, coatings, polyester coatings, etc., can solve the problems of reducing graphene hydrophobicity, poor electrochemical anti-corrosion ability, unfavorable electrochemical anti-corrosion, etc., and achieve high practicability , good corrosion resistance, less structural defects

Active Publication Date: 2016-09-28
上海多希石墨烯材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, graphene oxide or modified graphene is generally used as an anti-corrosion filler, but the inventors of the application have found that graphene oxide and modified graphene contain a large amount of organic functional groups, which reduces the corrosion resistance of graphene. Hydrophobicity, the barrier ability of graphene to oxygen, water, and corrosive ions is reduced, and the introduction of a large number of functional groups reduces the electrical conductivity, which is not conducive to electrochemical anticorrosion; therefore, in the conventional technology, the prepared anticorrosion coating material has The problem of poor electrochemical anticorrosion ability

Method used

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  • Anticorrosive coating material with physically stripped graphene and method for preparing anticorrosive coating material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 80 parts of polyvinylpyrrolidone and dissolve in N-methylpyrrolidone. Take 10 parts of 50-mesh high-quality physically exfoliated graphene powder and add N-methylpyrrolidone to sonicate for 2 hours, with an ultrasonic power of 500W and an ultrasonic temperature of 30°C. Mix polyvinylpyrrolidone solution and graphene slurry after ultrasonication, add 2 parts of dispersant (BYK161), 2 parts of leveling agent (BYK361), 3 parts of defoamer (BYK088), 3 parts of coupling agent (KH550 ) high-speed disperser, the dispersion speed is 2000r / min, and the dispersion time is 30min; the anti-corrosion coating material is prepared, and its anti-corrosion performance is shown in Table 1.

Embodiment 2

[0031] Weigh 54 parts of epoxy resin E44 (Baling Petrochemical) and dissolve in 40 parts of acetone. Take 3 parts of 50-mesh high-quality physically exfoliated graphene powder and add 300 acetone to ultrasonic for 2 h, ultrasonic power 500 W, ultrasonic temperature 30 °C. Mix the epoxy resin solution with the graphene slurry after ultrasonication and add 1 part of dispersant (BYK111), 1 part of leveling agent (BYK356), 1 part of defoamer (BYK057), 2 parts of coupling agent (KH550 ) high-speed disperser, the dispersion speed is 2000r / min, and the dispersion time is 30min; the anti-corrosion coating material is prepared, and its anti-corrosion performance is shown in Table 1.

Embodiment 3

[0033] Weigh 21 parts of polyvinyl alcohol and dissolve in 20 parts of water. Take 12 parts of 50-mesh high-quality physically exfoliated graphene powder and add it into 40 water for ultrasonication for 10 hours. The ultrasonic power is 100W and the ultrasonic temperature is 30°C. Mix the polyvinyl alcohol solution with the graphene slurry after ultrasonication and add 0.6 parts of dispersant (BYK161), 0.8 parts of leveling agent (BYK361), 0.8 parts of defoamer (BYK088), 1.8 parts of coupling agent (KH570 ) high-speed disperser, the dispersion speed is 1000r / min, and the dispersion time is 90min; the anti-corrosion coating material is prepared, and its anti-corrosion performance is shown in Table 1.

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Abstract

The invention belongs to the field of anticorrosive coating, and particularly relates to an anticorrosive coating material with physically stripped graphene and a method for preparing the anticorrosive coating material. An anticorrosive component in the anticorrosive coating material is physically stripped graphene powder. The anticorrosive coating material comprises, by weight, 3-12 parts of the physically stripped graphene powder, 21-54 parts of matrix resin, 0.6-1.8 parts of leveling agents, 0.6-1.8 parts of defoaming agents, 0.6-1.8 parts of dispersing agents, 0.6-1.8 parts of coupling agents and 40-70 parts of solvents. The anticorrosive coating material and the method have the advantages that the physically stripped graphene is added into the anticorrosive coating material in procedures for preparing the anticorrosive coating material, accordingly, permeation of moisture and other corrosive molecules can be effectively obstructed, and physical anticorrosive effects can be realized; the physically stripped graphene is excellent in electric conductivity, accordingly, anodic reaction and corrosion of metal base materials can be effectively prevented, and electrochemical anticorrosive effects can be realized.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coatings, in particular to an anti-corrosion coating material containing physically exfoliated graphene and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of my country's economy, a large amount of steel has been used in the fields of transportation, construction, machinery, energy, chemical industry, infrastructure, railway and marine development, and the resulting corrosion of steel has become more and more serious. Therefore, people's performance requirements for anti-corrosion coatings are getting higher and higher, and traditional organic anti-corrosion coatings can no longer meet the demand. [0003] Graphene is an ultra-thin material with a single carbon atom thickness arranged in a two-dimensional honeycomb structure. As a new hot research object, graphene has rich physical properties, and its specific surface area reaches 2600m 2 / g, ...

Claims

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Application Information

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IPC IPC(8): C09D139/06C09D129/04C09D171/02C09D163/00C09D167/08C09D161/06C09D133/00C09D5/08
CPCC08K3/04C09D5/08C09D129/04C09D133/00C09D139/06C09D161/06C09D163/00C09D167/08C09D171/02
Inventor 何勇赫恩龙
Owner 上海多希石墨烯材料科技有限公司
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