Preparation method, application and testing method of graphene modified coating material
A technology for graphene modification and coating materials, applied in coatings, analysis materials, anti-corrosion coatings, etc., can solve problems such as promotion of corrosion, and achieve excellent high temperature resistance, simple process flow, and good durability
Inactive Publication Date: 2021-03-09
JINLING INST OF TECH
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Problems solved by technology
However, when the amount of graphene added reaches a certain value, the conductivity of the originally insulating polymer material will also increase by several orders of magnitude, which will have the side effect of promoting corrosion.
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[0046] As a preferred embodiment of the present invention, the present invention provides a kind of preparation method of graphene modified coating material, comprises the following steps:
[0047] Dissolving polyetherimide in N-methylpyrrolidone solution, mixing and stirring, and preparing a film-forming solution;
[0048]Get polyvinylpyrrolidine and dissolve in dichloromethane solution, after mixing and stirring, obtain graphene sheet solution;
[0049] Taking the graphene sheet solution for ultrasonication, after mixing and stirring, the first graphene sheet dispersion is obtained;
[0050] Take the film-making liquid and add it dropwise into the first graphene sheet dispersion, then perform ultrasonication, and after mixing and stirring, obtain the second graphene sheet dispersion;
[0051] Take the second graphene sheet dispersion and distill off the methylene chloride therein, add a curing agent after there are no bubbles in the second graphene sheet dispersion, and mix...
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The invention relates to the field of anticorrosive materials, and in particular, relates to a preparation method, application and testing method of a graphene modified coating material, wherein the preparation method comprises the following steps: dissolving polyetherimide in an N-methyl pyrrolidone solution, and mixing and stirring to prepare a film-making solution; dissolving polyvinylpyrrolidone in a dichloromethane solution, and mixing and stirring to obtain a graphene sheet solution; carrying out ultrasonic treatment on the graphene sheet solution, and mixing and stirring to obtain a first graphene sheet dispersion liquid; taking a membrane preparation liquid, dropwise adding into the first graphene sheet dispersion liquid, carrying out ultrasonic treatment, and mixing and stirring to obtain a second graphene sheet dispersion liquid; taking the second graphene sheet dispersion liquid to evaporate dichloromethane in the second graphene sheet dispersion liquid, adding a curing agent after no bubbles exist in the second graphene sheet dispersion liquid, and mixing and stirring to obtain the graphene modified anticorrosive coating material. The prepared graphene modified anticorrosive coating material does not contain heavy metal components, and is wider in application range, higher in practicability and suitable for large-scale production.
Description
technical field [0001] The invention relates to the field of anti-corrosion materials, in particular to a preparation method of a graphene-modified coating material. Background technique [0002] With the development of modern industry, more and more attention has been paid to corrosion resistance. Metal corrosion refers to the degradation of the performance of materials due to chemical and electrochemical reactions on the surface of metal materials and the environment. Metal corrosion will cause huge losses. One of the simplest and most effective anti-corrosion methods is to coat a layer of anti-corrosion coating on the metal surface, so that there is a barrier between the metal surface and the environment. At present, the demand in the global anti-corrosion coating market is growing rapidly, especially in the fields of oil and gas industry, power industry, industrial field and infrastructure construction. [0003] Graphene is a two-dimensional crystalline material compose...
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IPC IPC(8): C09D179/08C09D5/08G01N13/00G01N17/00G01N27/26G01N33/00
CPCC09D179/08C09D5/08C09D5/18G01N13/00G01N17/00G01N27/26G01N33/00G01N33/0096C08K3/042
Inventor 韦鹏飞刘峥王志成缪春生张克敏
Owner JINLING INST OF TECH