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Preparation method of hydroxylated graphene epoxy resin anti-corrosion coating

A technology of graphene epoxy resin and hydroxylated graphene, which is applied in the field of preparation of hydroxylated graphene epoxy resin anti-corrosion coatings, can solve the problem of high viscosity, limiting the performance and application of graphene epoxy resin composite materials, and graphene dispersion. Inhomogeneity and other problems to achieve the effect of enhancing compatibility

Inactive Publication Date: 2019-12-31
嘉兴烯成新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of preparing graphene-epoxy resin composites, graphene is prone to agglomeration due to the size effect, and the high viscosity of the epoxy resin matrix also easily leads to uneven dispersion of graphene, thus to a certain extent Limiting the performance and application of graphene-epoxy composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of hydroxylated graphene epoxy resin anticorrosive coating, the specific steps are:

[0018] (1) Appropriate amount of graphene powder is treated with hydrogen peroxide, vanadium pentoxide, and an aqueous solution with a pH of 3-5 to obtain a hydroxylated graphene solution by stirring, ultrasonic, etc., and then washing, filtering, freezing and drying to obtain hydroxylated graphene powder.

[0019] (2) Stir and mix 75-80 parts of liquid epoxy resin and 100-150 parts of epoxy resin solvent to obtain a clear low-viscosity epoxy resin solution; then mix 0.5-2 parts of hydroxylated graphene into the epoxy resin In the solution, and put it into the ball mill tank of the horizontal ball mill, at a speed of 400-600R / min, after 48-72h ball milling, a uniformly dispersed hydroxylated graphene epoxy resin solution is obtained.

[0020] (3) Place the evenly dispersed hydroxylated graphene epoxy resin solution in a vacuum oven, and remove the solvent at 40-80°C and -...

Embodiment 2

[0024] A preparation method of hydroxylated graphene epoxy resin anticorrosive coating, the specific steps are:

[0025] (1) A proper amount of graphene powder is treated with hydrogen peroxide, vanadium pentoxide, and an aqueous solution with a pH of 3-5 to obtain a hydroxylated graphene solution, which is washed, filtered and freeze-dried to obtain hydroxylated graphene powder.

[0026] (2) Mix 80-90 parts of liquid epoxy resin and 100-150 parts of epoxy resin solvent by stirring to obtain a clear low-viscosity epoxy resin solution; then mix 1-3 parts of hydroxylated graphene into the epoxy resin The solution is put into the ball milling tank of a horizontal ball mill, and a uniformly dispersed hydroxylated graphene epoxy resin solution is obtained after ball milling at a speed of 400-600R / min and after 48-72h.

[0027] (3) Place the evenly dispersed hydroxylated graphene epoxy resin solution in a vacuum oven, and remove the solvent at 40-80°C and -0.095 MPa pressure. The hydroxyl...

Embodiment 3

[0031] A preparation method of hydroxylated graphene epoxy resin anticorrosive coating, the specific steps are:

[0032] (1) A proper amount of graphene powder is treated with hydrogen peroxide, vanadium pentoxide, and an aqueous solution with a pH of 3-5 to obtain a hydroxylated graphene solution, which is washed, filtered and freeze-dried to obtain hydroxylated graphene powder.

[0033] (2) Stir and mix 80-90 parts of liquid epoxy resin and 100-150 parts of epoxy resin solvent to obtain a clear low-viscosity epoxy resin solution; then mix 3-5 parts of hydroxylated graphene into the epoxy resin In the solution, it is put into the ball mill tank of the horizontal ball mill, at a speed of 400-600 R / min, after 48-72h ball milling, a uniformly dispersed hydroxylated graphene epoxy resin solution is obtained.

[0034] (3) Place the evenly dispersed hydroxylated graphene epoxy resin solution in a vacuum oven, and remove the solvent at 40-80°C and -0.095 MPa pressure. The hydroxylated gra...

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Abstract

The invention discloses a preparation method of hydroxylated graphene epoxy resin anti-corrosion coating. The preparation method of the hydroxylated graphene epoxy resin anti-corrosion coating comprises the following components in parts by weight: 0.5-5 parts of hydroxylated graphene, 75-90 parts of liquid epoxy resin, 10-20 parts of an epoxy resin curing agent and 100-150 parts of an epoxy resinsolvent. The preparation method comprises the steps of mixing the hydroxylated graphene, the liquid epoxy resin, the epoxy resin solvent and the like into a ball-milling tank together for ball-millingdispersion, removing the epoxy resin solvent from the dispersed hydroxylated graphene epoxy resin solution under vacuum, and mixing an epoxy resin curing agent with the hydroxylated graphene epoxy resin without the solvent to obtain the hydroxylated graphene modified epoxy resin anti-corrosion coating. After 1000-hour salt spray test, the hydroxylated graphene epoxy resin anti-corrosion coating prepared by ball-milling still has no obvious corrosion, and a coating layer has good insulating property, uniform dispersion and complete structure.

Description

Technical field [0001] The invention relates to the field of coatings, in particular to a preparation method of hydroxylated graphene epoxy resin anticorrosive coating. Background technique [0002] Epoxy resin anticorrosive coating contains high polarity hydroxyl and ether bond in the molecular structure, so the coating film has good chemical resistance and good alkali resistance. There are polar groups in the epoxy resin, which makes the coating film have a certain degree of hydrophilicity. If the formula is selected properly, a coating film with good water resistance can also be obtained. However, the pure epoxy resin anticorrosive coating is simple in composition, so the anticorrosive coating can not be used for a long time in the long-term high-salt seawater environment, and it needs to be replaced regularly. For large equipment such as ships, changing the coating film is a time-consuming and laborious task. [0003] Graphene is a new type of two-dimensional planar composite...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D5/08C09D163/00C08K9/02C08K3/042
Inventor 敖善世秦存琪叶鹏
Owner 嘉兴烯成新材料有限公司
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