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Modified graphene oxide anticorrosion coating and preparation method thereof

An anti-corrosion coating and graphene technology, applied in anti-corrosion coatings, epoxy resin coatings, coatings, etc., can solve problems such as the compatibility of agglomerated epoxy resins, and achieve uniform dispersion, good impact resistance, and improved impact resistance. performance effect

Active Publication Date: 2022-04-26
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, adding a single graphene oxide in epoxy resin has certain limitations. Due to surface effects, volume effects, quantum size effects and macroscopic quantum tunneling effects, graphene itself is prone to agglomeration, so a single graphene oxide is added in epoxy resin. In epoxy resin, the problem of easy agglomeration and poor compatibility with epoxy resin

Method used

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  • Modified graphene oxide anticorrosion coating and preparation method thereof
  • Modified graphene oxide anticorrosion coating and preparation method thereof
  • Modified graphene oxide anticorrosion coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6

[0024] The preparation method of embodiment 1 to 6 is:

[0025] Preparation of KH550 modified SiO 2 @AlH 2 P 3 o 10 Composite material: take AlH 2 P 3 o 10 , disperse it in the ethanol solution of deionized water, then add tetraethyl orthosilicate, add dropwise glacial acetic acid, adjust the pH to 4±1, then stir on a magnetic stirrer for 40±10min, and then mix the stirred The liquid was transferred into the reaction kettle, and the hydrothermal reaction was carried out at 120 ± 10 ° C for 6 ± 1 h. The reacted product was washed with deionized water until it was neutral, and then dried in vacuum to obtain SiO 2 @AlH 2 P 3 o 10 Composite material; SiO 2 @AlH 2 P 3 o 10 The composite material is uniformly dispersed in absolute ethanol by ultrasonic; the temperature is raised to 50±5°C in a water bath, and KH550 silane coupling agent is added, and magnetically stirred at 50±5°C for 6±1h; after the system temperature is cooled to room temperature, use deionized Water...

Embodiment 1

[0037] A kind of preparation of modified graphene oxide anticorrosion paint, wherein each material consumption is as follows:

[0038] Dopamine Hydrochloride 0.3g

[0039] Graphene oxide 0.1g

[0040] Tris buffer 450ml

[0041] Aluminum tripolyphosphate (AlH 2 P 3 o 10 )0.1g

[0042] Orthoethyl silicate (TEOS) 10g

[0043] Glacial acetic acid solution 10ml

[0044] Silane coupling agent (KH550) 2ml

[0045] Epoxy resin: 60g

[0046] Curing agent: 40g

[0047] Defoamer: 0.3g

[0048] Leveling agent: 0.8g

[0049] Wetting agent: 0.8g

[0050] Concrete preparation method comprises the following steps:

[0051] (1) Take 0.1g AlH 2 P 3 o 10 , disperse it in 75ml of ethanol solution of deionized water, then add 10g of ethyl orthosilicate, dropwise add 10ml of glacial acetic acid, adjust the pH to 5, put the mixed solution on a magnetic stirrer and stir for 30min, then stir well The mixed solution was transferred into a 100ml reaction kettle, and subjected to hydroth...

Embodiment 2

[0056] A kind of preparation of modified graphene oxide anticorrosion paint, wherein each material consumption is as follows:

[0057] Dopamine Hydrochloride 0.3g

[0058] Graphene oxide 0.1g

[0059] Tris buffer 450ml

[0060] Aluminum tripolyphosphate (AlH 2 P 3 o 10 )0.2g

[0061] Orthoethyl silicate (TEOS) 5g

[0062] Glacial acetic acid solution 10ml

[0063] Silane coupling agent (KH550) 2ml

[0064] Epoxy resin: 60g

[0065] Curing agent: 40g

[0066] Defoamer: 0.3g

[0067] Leveling agent: 0.8g

[0068] Wetting agent: 0.8g

[0069] Concrete preparation method comprises the following steps:

[0070] (1) Take 0.2g AlH 2 P 3 o 10 , disperse it in 75ml of ethanol solution of deionized water, then add 10g of ethyl orthosilicate, dropwise add 10ml of glacial acetic acid, adjust the pH to 5, put the mixed solution on a magnetic stirrer and stir for 30min, then stir well The mixed solution was transferred into a 100ml reaction kettle, and subjected to hydrotherm...

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Abstract

The invention belongs to the technical field of anti-corrosion coatings, and discloses a modified graphene oxide anti-corrosion coating, which comprises the following mass components: 40-60% epoxy resin, functionalized SiO 2 @AlH 2 P 3 o 10 0.3-1% loaded graphene oxide nanocomposite material, 20-40% curing agent, 1-3% auxiliary agent, and the balance is water. In the present invention, aluminum tripolyphosphate coated with silicon dioxide is attached to the surface of dopamine-modified graphene oxide to improve dispersion and avoid agglomeration. The aluminum tripolyphosphate coated with silicon dioxide acts as a barrier to corrosive media, and can also Improve the wear resistance and hydrophobicity of the coating. When the coating is damaged, a passivation film can also be generated to cover the damaged coating to prevent the corrosive substances from continuing to corrode the coating. The present invention is effective for epoxy resin The anti-corrosion performance of the composite coating has a great enhancement effect, and has the characteristics of high wear resistance, good hydrophobicity, strong impact resistance and strong corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of anti-corrosion coatings, and in particular relates to a modified graphene oxide anti-corrosion coating and a preparation method thereof. Background technique [0002] With the development of science and technology, a single functional material is far from meeting people's needs. Material compounding is the development trend of materials. Through the functional compounding of two or more materials, the mutual compensation and optimization of performance, Composite materials with more excellent properties can thus be prepared. Epoxy resin itself is brittle and prone to cracks, and during the curing process of epoxy coatings, many micropores are formed due to solvent evaporation, and corrosive electrolytes can easily penetrate into the anti-corrosion coating through cracks and micropores. Graphene oxide is a new type of two-dimensional carbon nanomaterial, which has good mechanical, electrical, thermal, opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D163/00C09D5/08
CPCC09D163/00C09D5/08C08K2003/327C08K9/12C08K9/04C08K3/042C08K9/06C08K3/36C08K3/32C08K9/10
Inventor 赵书华段云飞王树立周诗岽饶永超赵会军黄维秋李恩田李家波刘泽辉
Owner CHANGZHOU UNIV
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