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Modified graphene oxide material as well as preparation method and application thereof

A technology of graphene and stone oxide, applied in epoxy resin coatings, anti-corrosion coatings, coatings, etc., can solve problems such as hindering the application of graphene oxide and poor dispersion performance

Pending Publication Date: 2021-11-26
GUANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the poor dispersion of graphene in epoxy resin matrix seriously hinders the application of graphene oxide in epoxy anticorrosion coatings.

Method used

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  • Modified graphene oxide material as well as preparation method and application thereof
  • Modified graphene oxide material as well as preparation method and application thereof
  • Modified graphene oxide material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) Preparation of amino-functionalized graphene oxide

[0046] 5g of γ-aminopropyltriethoxysilane, 5g of N-aminoethyl-γ-aminopropyltrimethoxysilane and 10g of graphene oxide were reacted at 50°C for 5 hours to obtain amino-functionalized graphene oxide.

[0047] (2) Preparation of nonionic epoxy emulsifier

[0048] Mix 80g toluene, 10g methyl acrylate, 5g ethyl acrylate, 10g butyl methacrylate, 5g isobutyl methacrylate, 30g allyl polyether and 20g glycidyl methacrylate, add 0.2g initiator Agent azobisisobutyronitrile, react at 110°C for 3 hours to obtain a nonionic epoxy emulsifier.

[0049] (3) Preparation of modified graphene oxide material and epoxy resin emulsion

[0050] The amino-functionalized graphene oxide 10g prepared by step (1) and the nonionic epoxy emulsifier 100g prepared by step (2) were reacted under ultrasonication for 0.8h, and the solvent was removed by rotary evaporation at 110°C for 0.8h. A modified graphene oxide material is obtained.

[0051...

Embodiment 2

[0054] (1) Preparation of amino-functionalized graphene oxide

[0055] 15g of γ-aminopropyltrimethoxysilane, 5g of N-aminoethyl-γ-aminopropylmethyldimethoxysilane and 10g of graphene oxide were reacted at 30°C for 3 hours to obtain amino-functionalized graphene oxide .

[0056] (2) Preparation of nonionic epoxy emulsifier

[0057] Mix 40g toluene, 10g benzene, 5g methyl acrylate, 5g butyl acrylate, 5g methyl methacrylate, 5g ethyl methacrylate, 30g allyl polyether and 10g glycidyl methacrylate, add 0.2 g of azobisisoheptanonitrile and 0.3g of azobisisobutyronitrile were reacted at 120°C for 5 hours to obtain a nonionic epoxy emulsifier.

[0058] (3) Preparation of modified graphene oxide material and epoxy resin emulsion

[0059] The amino-functionalized graphene oxide 20g prepared by step (1) and the nonionic epoxy emulsifier 100g prepared by step (2) were reacted under ultrasonication for 1h, and the solvent was removed by rotary evaporation at 120°C for 0.5h to obtain M...

Embodiment 3

[0063] (1) Preparation of amino-functionalized graphene oxide

[0064] React 15g N-aminoethyl-γ-aminopropyltriethoxysilane, 10g N-aminoethyl-γ-aminopropylmethyldiethoxysilane and 10g graphene oxide at 60°C for 2 hours , to obtain amino-functionalized graphene oxide.

[0065] (2) Preparation of nonionic epoxy emulsifier

[0066] Mix 100g of solvent butanone, 5g of methyl acrylate, 5g of isobutyl acrylate, 3g of ethyl methacrylate, 2g of butyl methacrylate, 50g of allyl polyether and 5g of glycidyl methacrylate, and add 0.5 g azobisisobutyronitrile, 0.3g azobisisoheptanonitrile, and react at 80°C for 8 hours to obtain a nonionic epoxy emulsifier.

[0067] (3) Preparation of modified graphene oxide material and epoxy resin emulsion

[0068] The amino-functionalized graphene oxide 15g prepared by step (1) and the nonionic epoxy emulsifier 100g prepared by step (2) were reacted for 2h under the action of ultrasound, and the solvent was removed by rotary evaporation at 80°C for 1...

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Abstract

The invention discloses a modified graphene oxide material as well as a preparation method and application thereof. The modified graphene oxide material is prepared from the following raw materials through reaction: a nonionic epoxy emulsifier and amino-functionalized graphene oxide. The nonionic epoxy emulsifier is obtained by polymerizing the following raw materials: an acrylate monomer, a methacrylate monomer, allyl polyether and glycidyl methacrylate. The modified graphene oxide material simultaneously contains an epoxy group, a polyether long chain, a polyacrylate chain segment and a graphene structure, so that the modified graphene oxide has excellent water-based property and stronger emulsifying ability, and the epoxy group has better compatibility with epoxy resin, thereby improving the dispersity of the graphene oxide in the epoxy resin.

Description

technical field [0001] The invention relates to the technical field of emulsifiers, in particular to a modified graphene oxide material and its preparation method and application. Background technique [0002] Epoxy resin anti-corrosion coatings have the characteristics of good adhesion, excellent chemical resistance, high hardness, chemical corrosion resistance, excellent friction performance, stability in solvents, salt spray resistance, alkali corrosion resistance, and low cost. They are suitable for general corrosion And in the protection of steel structures in severely corrosive environments, such as road fences, ships, offshore platforms and other light and heavy anti-corrosion fields. It is an inevitable trend that traditional solvent-based epoxy anti-corrosion coatings are gradually replaced by more efficient, non-toxic and environmentally friendly water-based heavy-duty anti-corrosion coatings. The most important task in the field of epoxy resin heavy-duty anti-cor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G83/00C08F283/06C08F220/14C08F220/18C08F220/32C09D163/00C09D5/08
CPCC08G83/001C08F283/065C09D163/00C09D5/08C08G2150/90C08F220/14C08F220/1802C08F220/1804C08F220/325C08L87/005
Inventor 王政芳李善吉温华文
Owner GUANGZHOU INST OF TECH
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