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Special graphene master batch for heavy duty anticorrosion dry powder coating and preparation method

A technology of anti-corrosion dry powder and graphene, which is applied in the direction of anti-corrosion coatings, powder coatings, polyurea/polyurethane coatings, etc., can solve the problems of affecting anti-corrosion performance and irrational barrier performance of coatings, and achieve good chemical resistance and excellent anti-corrosion performance , The effect of improving the service life

Inactive Publication Date: 2019-01-18
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the fact that graphene, which is widely used at present, is used as an insulating filler in anti-corrosion coatings, because graphene is extremely prone to agglomeration, which makes the barrier performance of the coating irrational and affects the anti-corrosion performance. This invention proposes a special graphite for heavy-duty anti-corrosion dry powder coatings Graphene masterbatch and preparation method, thereby improving the dispersion of graphene in coatings, improving barrier properties and anti-corrosion effects

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  • Special graphene master batch for heavy duty anticorrosion dry powder coating and preparation method

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Effect test

Embodiment 1

[0032] The preparation process is:

[0033] (1) Add graphene microflakes and sericite whose diameter-thickness ratio is greater than 50 into deionized water, ultrasonically disperse evenly, age for 24 hours, filter, and dry to prepare a flake inorganic carrier loaded with graphene microflakes ;

[0034] (2) Mix the flaky inorganic carrier loaded with graphene microflakes prepared in step (1) with a dispersant and a catalyst evenly, and then add it to deionized water containing an initiator and a photocurable urethane acrylate prepolymer, Ultrasonic dispersion is uniform, and a sheet-like carrier coated with photocurable polyurethane acrylate prepolymer is obtained; the dispersant is tannic acid; the catalyst is titanium tetrachloride; the initiator is TPO;

[0035] Among the raw materials, 15 parts by weight of graphene microchips, 27 parts by weight of sheet-like inorganic carrier, 1 part by weight of dispersant, 2 parts by weight of catalyst, 2 parts by weight of initiator,...

Embodiment 2

[0038] The preparation process is:

[0039] (1) Add graphene microflakes and sericite whose diameter-thickness ratio is greater than 50 into deionized water, ultrasonically disperse evenly, age for 24 hours, filter, and dry to prepare a flake inorganic carrier loaded with graphene microflakes ;

[0040] (2) Mix the flaky inorganic carrier loaded with graphene microflakes prepared in step (1) with a dispersant and a catalyst evenly, and then add it to deionized water containing an initiator and a photocurable urethane acrylate prepolymer, Ultrasonic dispersion is uniform, and a sheet-like carrier coated with photocurable polyurethane acrylate prepolymer is obtained; the dispersant is sodium linoleate; the catalyst is titanium trichloride; the initiator is 1173;

[0041] Among the raw materials, 14 parts by weight of graphene microchips, 26 parts by weight of sheet-like inorganic carrier, 1 part by weight of dispersant, 1 part by weight of catalyst, 2 parts by weight of initiat...

Embodiment 3

[0044] The preparation process is:

[0045] (1) Add graphene microflakes and sericite whose diameter-thickness ratio is greater than 50 into deionized water, ultrasonically disperse evenly, age for 24 hours, filter, and dry to prepare a flake inorganic carrier loaded with graphene microflakes ;

[0046] (2) Mix the flaky inorganic carrier loaded with graphene microflakes prepared in step (1) with a dispersant and a catalyst evenly, and then add it to deionized water containing an initiator and a photocurable urethane acrylate prepolymer, Ultrasonic dispersion is uniform, and a sheet-like carrier coated with photocurable polyurethane acrylate prepolymer is obtained; the dispersant is sodium linoleate; the catalyst is vanadyl triiodide; the initiator is 819;

[0047] Among the raw materials, 15 parts by weight of graphene microchips, 29 parts by weight of sheet-like inorganic carrier, 2 parts by weight of dispersant, 2 parts by weight of catalyst, 2 parts by weight of initiator...

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Abstract

The invention provides a special graphene master batch for a heavy duty anticorrosion dry powder coating and a preparation method. The preparation method comprises the following steps: adding a flakyinorganic carrier loaded with graphene microchips, a dispersant, a catalyst, an initiator and a photocurable urethane acrylate prepolymer into deionized in sequence, and carrying out ultrasonic treatment to enable the mixture to disperse uniformly to obtain a flaky carrier coated with the photocurable urethane acrylate prepolymer; carrying out ejection atomization pelletizing under radiation of UV(Ultraviolet Rays), and collecting to prepare the special graphene master batch for the heavy duty anticorrosion dry powder coating. By adopting the method, the graphene microchips can be immobilizedin the flaky inorganic carrier through photocuring reactions of the photocurable urethane acrylate prepolymer, the prepared graphene master batch can be directly mixed with the heavy duty anticorrosion dry powder coating for hot melting spraying, the graphene microchips are uniformly dispersed into the coating to form a uniform barrier layer, then the coating is endowed with excellent anticorrosion properties, and the service life of a metal substrate protected by the heavy duty anticorrosion dry powder coating can be greatly prolonged.

Description

technical field [0001] The invention relates to the field of anti-corrosion coatings, in particular to an anti-corrosion coating reinforcement masterbatch, in particular to a special graphene masterbatch for heavy-duty anticorrosion dry powder coatings and a preparation method. Background technique [0002] Metal corrosion is the phenomenon that the metal surface is destroyed by the chemical or electrochemical action of the environmental medium. The most common and effective method of anti-corrosion is to coat the metal surface with an anti-corrosion coating to isolate the substrate from corrosive media such as water and oxygen. . Therefore, the barrier performance of the coating is one of the main factors to evaluate the performance of anti-corrosion coatings. Existing anti-corrosion coatings usually use polymer as the main film-forming substance, such as epoxy resin, alkyd resin, acrylic resin, etc. The crystallization defects, microcracks, pinhole structure and the indu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D5/03C09D175/14
CPCC09D5/08C09D5/038C09D175/14C08K13/06C08K9/12C08K7/00C08K3/042
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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