Waterborne epoxy anticorrosive paint containing composite functional modified graphene oxide and preparation method and application

A composite function, anti-corrosion coating technology, applied in the field of coatings, can solve the problems of graphene agglomeration, difficult to uniformly disperse polymers, and inapplicability, so as to enhance environmental resistance, avoid human health and environmental hazards, and have a small pungent smell Effect

Active Publication Date: 2022-01-21
国科广化韶关新材料研究院 +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene without surface treatment and regular structure tends to agglomerate and is not easy to achieve uniform dispersion inside the polymer, so graphene without surface treatment is not suitable for polymer composites.

Method used

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  • Waterborne epoxy anticorrosive paint containing composite functional modified graphene oxide and preparation method and application
  • Waterborne epoxy anticorrosive paint containing composite functional modified graphene oxide and preparation method and application
  • Waterborne epoxy anticorrosive paint containing composite functional modified graphene oxide and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Preparation of composite functionalized modified graphene oxide:

[0046] (1) Preparation of amino acid modified graphene oxide: 1 mass part of graphene oxide (GO) was dispersed in 100 mass parts of deionized water by ultrasonic treatment for 30 minutes at a power of 300W to obtain uniform graphene oxide Suspension, while stirring, the lysine of 10 mass parts is added dropwise in the suspension, under N 2 Under protection, react at 40° C. for 12 hours, wash the obtained product, remove unreacted lysine by suction filtration, and then dry the obtained solid to obtain a black solid powder of lysine-modified graphene oxide.

[0047] (2) Preparation of silane coupling agent modified titanium dioxide: 1 mass part of titanium dioxide was dispersed in a mixed solution of 100 mass parts deionized water and absolute ethanol (deionized Water / absolute ethanol (V1:V2=1:9)) to obtain a titanium dioxide suspension, while stirring, 10 parts by mass of γ-glycidyl etheroxypropyltrim...

Embodiment 2

[0056] 1. Preparation of composite functionalized modified graphene oxide:

[0057] (1) Preparation of amino acid modified graphene oxide: 1 mass part of graphene oxide (GO) was dispersed in 120 mass parts of deionized water by ultrasonic treatment at 400W for 50 minutes to obtain uniform graphene oxide Suspension, while stirring, the lysine of 15 mass parts is added dropwise in the suspension, under N 2 Under protection, react at 45° C. for 16 h, wash the obtained product, remove unreacted lysine by suction filtration, and then dry the obtained solid to obtain a black solid powder of lysine-modified graphene oxide.

[0058] (2) Preparation of silane coupling agent modified titanium dioxide: 1 mass part of titanium dioxide was dispersed in a mixed solution of 120 mass parts deionized water and absolute ethanol (deionized Water / absolute ethanol (V1:V2=1:9)) to obtain a titanium dioxide suspension, while stirring, 15 parts by mass of γ-glycidyl etheroxypropyltrimethoxysilane (K...

Embodiment 3

[0067] 1. Preparation of composite functionalized modified graphene oxide:

[0068] (1) Preparation of amino acid modified graphene oxide: 1 mass part of graphene oxide (GO) was dispersed in 150 mass parts of deionized water by ultrasonic treatment for 60 minutes at a power of 600W to obtain uniform graphene oxide Suspension, while stirring, the lysine of 20 mass parts is added dropwise in the suspension, under N 2 Under protection, react at 50° C. for 18 hours; wash the obtained product, remove unreacted lysine by suction filtration, and then dry the obtained solid to obtain a black solid powder of lysine-modified graphene oxide.

[0069] (2) Preparation of silane coupling agent modified titanium dioxide: 1 mass part of titanium dioxide was dispersed in a mixed solution of 150 mass parts deionized water and absolute ethanol (deionized Water / absolute ethanol (V1:V2=1:9)) to obtain a titanium dioxide suspension, while stirring, 20 parts by mass of γ-glycidyl etheroxypropyltrim...

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Abstract

The invention belongs to the field of coatings, and discloses a waterborne epoxy anticorrosive coating containing composite functional modified graphene oxide and a preparation method and application. Graphene oxide is subjected to functional modification by adopting amino acid and titanium dioxide together to obtain composite functional modified graphene oxide, and the composite functional modified graphene oxide is used as a corrosion inhibitor to be compounded with a self-emulsifying waterborne epoxy curing agent, epoxy resin, a silicofluoride coupling agent, a dispersing agent, an accelerant, a defoaming agent and a flatting agent to form the anti-corrosion coating. The anticorrosive paint has excellent acid and alkali resistance, water resistance, salt fog resistance and hydrophobicity after forming a film, and can be applied to the field of metal corrosion prevention.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a water-based epoxy-based anti-corrosion coating containing composite functionalized modified graphene oxide and its preparation method and application. Background technique [0002] Organic coatings are a common measure to control and delay metal corrosion. However, the traditional solvent-based anti-corrosion coatings contain a large amount of volatile organic compounds (VOCs) in the coating process of steel products and their facilities, which has become one of the sources of air pollution, seriously endangering environment and human health. Therefore, water-based anti-corrosion coatings have become an inevitable development trend of the coatings industry due to their advantages of environmental protection, non-toxicity and easy cleaning. However, compared with solvent-based industrial coatings, water-based anti-corrosion coatings inevitably introduce a large number of hydrophilic gro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/63
CPCC09D163/00C09D5/08C09D7/62C09D7/63C08K2003/2241C08K9/04C08K3/042C08K9/06C08K3/22C08K5/5419
Inventor 刘伟区王硕梁利岩
Owner 国科广化韶关新材料研究院
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