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Nano titanium-doped modified graphene high-performance anticorrosive coating and preparation method thereof

An anti-corrosion coating, graphene technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve the problems of difficult to achieve layer-by-layer protection effect, compactness and integrity effects, and difficult to uniformly disperse anti-corrosion coatings. , to achieve the effects of excellent chemical stability, strong film formation, and improved anti-oxidative corrosion performance

Inactive Publication Date: 2021-02-19
山东金芝麻环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the hydrophobicity of the original prepared graphene, it is easy to agglomerate, and it is difficult to disperse evenly during the preparation of anti-corrosion coatings, and its concentration is not easy to accurately control, so it is difficult to achieve the protective effect of overlapping layers
At the same time, due to the addition of various functional materials, it is difficult to form a coating that is firmly bonded to the substrate, and the compactness and integrity of the coating itself are also affected, which can only provide short-term oxidation and corrosion resistance.

Method used

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  • Nano titanium-doped modified graphene high-performance anticorrosive coating and preparation method thereof
  • Nano titanium-doped modified graphene high-performance anticorrosive coating and preparation method thereof

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preparation example Construction

[0033] In an embodiment of the present invention, the preparation method of the modified graphene comprises the following steps:

[0034] 1) Mix the graphene raw material, co-solvent and coupling agent, and stir in an ultrasonic reactor to obtain a graphene suspension;

[0035] 2) Mix the graphene suspension with water and heat at 100-120°C for 2 hours to obtain crude modified graphene;

[0036] 3) The crude modified graphene is sequentially subjected to solid-liquid separation, washing and drying to obtain modified graphene.

[0037] The embodiment of the present invention also provides a preparation method of the nano-titanium-doped modified graphene high-performance anti-corrosion coating, comprising the following steps:

[0038] 1) Mix nano-titanium dioxide and epoxy resin, and use a high-speed disperser to pre-disperse it to obtain a dispersion;

[0039] 2) Grinding the dispersion sufficiently to obtain a grinding product;

[0040] 3) Mix the abrasive, modified graphen...

Embodiment 1

[0046] Mix 25 parts of graphene raw materials, 3 parts of sodium benzoate and 3 parts of titanate, and stir through an ultrasonic reactor to obtain a graphene suspension;

[0047] Mix the prepared graphene suspension with 40 parts of water, and heat at 120° C. for 2 hours to obtain crude modified graphene;

[0048] The obtained modified graphene crude product is subjected to solid-liquid separation, washing and drying in sequence to obtain modified graphene;

[0049] 35 parts of nano-titanium dioxide and 250 parts of epoxy resin are mixed, and a high-speed disperser is used to pre-disperse it to obtain a dispersion;

[0050] Fully grinding the obtained dispersion to obtain a ground product;

[0051] Mix the prepared grind, modified graphene and 2 parts of modified aromatic amines, and stir with a mixer for 15 minutes to obtain a semi-finished anti-corrosion coating;

[0052] A bag filter is used to filter the semi-finished anti-corrosion coating to obtain a finished anti-cor...

Embodiment 2

[0054] Mix 30 parts of graphene raw materials, 3 parts of sodium benzoate and 3 parts of titanate, and stir in an ultrasonic reactor to obtain a graphene suspension;

[0055] Mix the prepared graphene suspension with 40 parts of water, and heat at 120° C. for 2 hours to obtain crude modified graphene;

[0056] The obtained modified graphene crude product is subjected to solid-liquid separation, washing and drying in sequence to obtain modified graphene;

[0057] 35 parts of nano-titanium dioxide and 250 parts of epoxy resin are mixed, and a high-speed disperser is used to pre-disperse it to obtain a dispersion;

[0058] Fully grinding the obtained dispersion to obtain a ground product;

[0059] Mix the prepared grind, modified graphene and 2 parts of modified aromatic amines, and stir with a mixer for 15 minutes to obtain a semi-finished anti-corrosion coating;

[0060] A bag filter is used to filter the semi-finished anti-corrosion coating to obtain a finished anti-corrosio...

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Abstract

The invention is applicable to the technical field of anticorrosive coatings, and provides a nano titanium-doped modified graphene high-performance anticorrosive coating which comprises the followingraw materials in parts by weight: 35-50 parts of nano titanium dioxide, 25-35 parts of modified graphene, 200-300 parts of epoxy resin, 1-5 parts of a cosolvent, 1-5 parts of a coupling agent, 2-5 parts of a curing agent and 30-50 parts of water. The invention also provides a preparation method of the nano titanium-doped modified graphene high-performance anticorrosive coating, graphene is modified, excellent chemical stability, strong adhesive force and film-forming property of graphene are considered, and meanwhile, the hydrophobicity of graphene is reduced, so that graphene is uniformly dispersed in the anticorrosive coating, and a protection effect of layer-by-layer overlapping is realized; the nano titanium dioxide is doped with the curing agent to form a coating layer firmly bonded with the substrate, thereby enhancing the compactness and integrity of the anticorrosive coating and greatly enhancing the oxidation corrosion resistance of the anticorrosive coating.

Description

technical field [0001] The invention relates to the technical field of anti-corrosion coatings, in particular to a nano-titanium-doped modified graphene high-performance anti-corrosion coating and a preparation method thereof. Background technique [0002] Anti-corrosion coatings, generally divided into conventional anti-corrosion coatings and heavy-duty anti-corrosion coatings, are an indispensable coating in paint coatings. Conventional anti-corrosion coatings play an anti-corrosion effect on metals under normal conditions and protect the service life of non-ferrous metals; A type of anti-corrosion coating that achieves a longer protection period than conventional anti-corrosion coatings. Heavy-duty anti-corrosion coatings are widely used in the chemical atmosphere and marine environment. Compared with conventional anti-corrosion coatings, the application in a more corrosive environment puts forward high-standard anti-corrosion requirements for heavy-duty anti-corrosion c...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/61C08G59/50
CPCC08G59/5033C08K2003/2241C08K2201/011C09D5/08C09D163/00C09D7/61C09D7/62C08K13/06C08K9/04C08K3/042C08K3/22
Inventor 魏玉向
Owner 山东金芝麻环保工程有限公司
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