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Water-based organic silicon fluorine modified graphene oxide/epoxy resin coating and preparation method thereof

A technology of epoxy resin coating and silicon fluorine modification, which is applied in the field of coatings to achieve good anti-corrosion properties, improve hardness and promote dispersion.

Active Publication Date: 2018-05-15
绵阳麦思威尔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a big gap between the water-based anti-corrosion coatings on the market and the oil-soluble coatings in terms of performance, and there are still relatively large difficulties in developing an anti-corrosion coating with excellent performance.

Method used

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  • Water-based organic silicon fluorine modified graphene oxide/epoxy resin coating and preparation method thereof
  • Water-based organic silicon fluorine modified graphene oxide/epoxy resin coating and preparation method thereof
  • Water-based organic silicon fluorine modified graphene oxide/epoxy resin coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] (1) Preparation of hydrophilic polyether modified epoxy resin:

[0064] Add 5 parts of maleic anhydride, 54 parts of polyethylene glycol monomethyl ether ((CH 3 O(CH 2 CH 2 O) n H), relative molecular weight 5000) and 60 parts of toluene, heated up to 80°C, added 1 part of p-toluenesulfonic acid, stirred for 7 hours, then added 25 parts of F-44 novolac epoxy resin and 2 parts of benzyl triethyl ammonium chloride, heated to 100°C, stirred and reacted for 12 hours, and the solvent was distilled off under reduced pressure to obtain a hydrophilic polyether-modified epoxy resin; the parts are parts by mass;

[0065] (2) Preparation of organosilicon-fluorine modified graphene oxide:

[0066] Add 70 parts of ethanol, 15 parts of deionized water, 2 parts of γ-aminopropyltriethoxysilane, 3 parts of ethyl orthosilicate, 5 parts of trifluoropropyltrimethoxysilane into the container, and heat up to 50°C , add 5 parts of ammonia water, stir and react for 2 hours, then add 5 par...

Embodiment 2

[0072] (1) Preparation of hydrophilic polyether modified epoxy resin:

[0073] Add 10 parts of succinic anhydride, 30 parts of polyethylene glycol butyl ether (relative molecular mass 600) and 40 parts of toluene into the container, heat up to 80°C, add 1 part of triethylamine, stir for 7 hours, and then add 25 parts of E -51 type epoxy resin and 2 parts of triphenylphosphine, heat up to 100°C, stir and react for 12 hours, and distill off the solvent under reduced pressure to obtain a hydrophilic polyether-modified epoxy resin; the parts are parts by mass;

[0074] (2) Preparation of organosilicon-fluorine modified graphene oxide:

[0075] Add 70 parts of ethanol, 15 parts of deionized water, 2 parts of γ-aminopropyltriethoxysilane, 3 parts of ethyl orthosilicate, 5 parts of hexafluorobutylpropyltrimethoxysilane in the container, and heat up to 50°C, add 5 parts of ammonia water, stir and react for 2 hours, then add 5 parts of graphene oxide, continue to react for 1 hour, coo...

Embodiment 3

[0081] (1) Preparation of hydrophilic polyether modified epoxy resin:

[0082] Add 10 parts of phthalic anhydride, 40 parts of polyethylene glycol monomethyl ether (molecular mass: 2000) and 50 parts of toluene into the container, raise the temperature to 80°C, add 1 part of dibutyltin dilaurate, and stir for 7 Hours, then add 25 parts of F-51 type novolac epoxy resin and 2 parts of triethylamine, heat up to 100 ° C and stir for 12 hours, and distill off the solvent under reduced pressure to obtain a hydrophilic polyether-modified epoxy resin; parts by mass;

[0083] (2) Preparation of organosilicon-fluorine modified graphene oxide:

[0084] Add 70 parts of ethanol, 15 parts of deionized water, 2 parts of γ-aminopropyltriethoxysilane, 3 parts of ethyl orthosilicate, 5 parts of hexafluorobutylpropyltrimethoxysilane in the container, and heat up to 60°C, add 5 parts of acetic acid, stir and react for 2 hours, then add 5 parts of graphene oxide, continue to react for 1 hour, co...

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Abstract

The invention belongs to the technical field of coating and discloses water-based organic silicon fluorine modified graphene oxide / epoxy resin coating and a preparation method thereof. The coating comprises a component A and a component B, wherein the component A comprises 30 to 70 parts by weight of epoxy resin, 20 to 80 parts by weight of hydrophilic polyether-containing modified epoxy resin and30 to 70 parts by weight of water; the component B comprises 10 to 40 parts by weight of a water-based epoxy curing agent, 0.1 to 10 parts by weight of organic silicon fluorine modified graphene oxide, 1 to 10 parts by weight of imvite, 1 to 5 parts by weight of zinc phosphate, 20 to 70 parts by weight of water, 0.3 to 2 parts by weight of a dispersing agent, 0.3 to 2 parts by weight of a defoaming agent, 0.3 to 2 parts by weight of a wetting agent and 0.3 to 2 parts by weight of a leveling agent; the weight ratio of the component A to the component B is 100:(40-60). The coating formed by thecoating provided by the invention has high hardness, water tolerance, acid and alkali resistance, ageing resistance, solvent resistance, salt tolerance, salt spray resistance and the like, and has high corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of coatings, in particular to a water-based organic silicon fluorine modified graphene oxide / epoxy resin coating and a preparation method thereof. technical background [0002] Epoxy resin has excellent adhesion to the surface of metal and non-metal materials, and the cured coating has excellent properties such as hardness, chemical corrosion resistance, wear resistance, and flexibility, so it is widely used in anti-corrosion, transportation and other fields. Has a wide range of applications. [0003] Graphene is a 2D honeycomb planar carbon film material with good strength, flexibility, compactness, electrical conductivity, and thermal conductivity. It is widely used in new materials, aerospace, new energy storage and other fields. [0004] Epoxy resin / graphene anti-corrosion coating is a new type of metal anti-corrosion coating, which combines the performance characteristics of epoxy resin and graphene. ...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D163/10C09D5/08C09D7/61
CPCC08K2003/328C08L2205/02C08L2205/035C09D5/08C09D163/00C08L63/10C08K13/06C08K9/06C08K3/04C08K3/346C08K3/32
Inventor 刘伟区谢炎坤石红义王政芳
Owner 绵阳麦思威尔科技有限公司
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