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Preparation method and application of ternary nano composite of reduced graphene oxide, iron(II,III) oxide and polyaniline

A nano-composite material, ferric oxide technology, applied in anti-corrosion coatings, coatings, etc., can solve the problems of limiting the popularization and application of graphene anti-corrosion coatings, and graphene is difficult to disperse, and achieve excellent chemical resistance and salt spray resistance. , the effect of excellent mechanical properties

Active Publication Date: 2018-04-27
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, graphene is difficult to disperse in water-based coating resins, which limits the popularization and application of graphene anti-corrosion coatings

Method used

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  • Preparation method and application of ternary nano composite of reduced graphene oxide, iron(II,III) oxide and polyaniline
  • Preparation method and application of ternary nano composite of reduced graphene oxide, iron(II,III) oxide and polyaniline
  • Preparation method and application of ternary nano composite of reduced graphene oxide, iron(II,III) oxide and polyaniline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Preparation of rGO / Fe 3 o 4 / PANI ternary nanocomposite material:

[0023] Weigh 0.279g of graphite oxide (rGO), 0.372g of ferric oxide (Fe 3 o 4 ) was dispersed in 150ml distilled water, transferred to a 250ml three-neck flask, and stirred ultrasonically for 30min. Then add 0.558g of aniline, and heat in a water bath at 95°C for 4 hours at a constant temperature; then cool the water bath to 0-5°C, add acetic acid, and adjust the pH of the mixed system to 1.

[0024] Weigh 1.824g of the initiator ammonium persulfate (APS) and dissolve it in 50ml of aqueous solution, transfer it to a constant pressure dropping funnel, and slowly add it dropwise to the system for 60 minutes. Reacted for 24h under ice bath conditions.

[0025] After the reaction, the product was washed with ethanol and water, and finally vacuum-dried and ground at 80°C to obtain rGO / Fe 3 o 4 / PANI (3:4:6) ternary nanocomposite material, in which the mass ratio of graphene oxide, ferric oxide and ...

Embodiment 2

[0030] 1. Preparation of rGO / Fe 3 o 4 / PANI ternary nanocomposite material:

[0031] Weigh 0.279g of graphite oxide and 0.651g of ferric oxide and disperse them in 150ml of distilled water, transfer them to a 250ml three-necked flask, and stir ultrasonically for 30min. Then add 0.558g of aniline, and heat in a water bath at 95°C for 4 hours at a constant temperature; then cool the water bath to 0-5°C, add acetic acid, and adjust the pH of the mixed system to 1.

[0032] Weigh 1.824g of initiator APS and dissolve it in 50ml of aqueous solution, transfer it to a constant pressure dropping funnel, and slowly add it dropwise to the system for 60 minutes. Reacted for 24h under ice bath conditions.

[0033] After the reaction, the product was washed with ethanol and water, and finally vacuum-dried and ground at 80°C to obtain rGO / Fe 3 o 4 / PANI ternary nanocomposite material, wherein the mass ratio of graphene oxide, ferric oxide and aniline is 3:7:6.

[0034] 2. Preparation o...

Embodiment 3

[0037] 1. Preparation of rGO / Fe 3 o 4 / PANI ternary nanocomposite material:

[0038] Weigh 0.279g of graphite oxide and 0.651g of ferric oxide and disperse them in 150ml of distilled water, transfer them to a 250ml three-necked flask, and stir ultrasonically for 30min. Then add 3.348g of aniline, and heat in a water bath at 95°C for 4 hours at a constant temperature; then cool the water bath to 0-5°C, add acetic acid, and adjust the pH value of the mixed system to 1.

[0039] Weigh 4.5g of the initiator APS and dissolve it in 50ml of aqueous solution, transfer it to a constant pressure dropping funnel, and slowly add it dropwise to the system for 60 minutes. Reacted for 24h under ice bath conditions.

[0040] After the reaction, the product was washed with ethanol and water, and finally vacuum-dried and ground at 80°C to obtain rGO / Fe 3 o 4 / PANI ternary nanocomposite material, wherein the mass ratio of graphene oxide, ferric oxide and aniline is 3:7:12.

[0041] 2. Prep...

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Abstract

The invention relates to the technical field of preparation of functional nano anticorrosion composites of waterborne anticorrosion coating materials, in particular to a preparation method and application of ternary nano composite of reduced graphene oxide, iron(II,III) oxide and polyaniline. Graphene oxide, iron(II,III) oxide and aniline are subjected to reduction reaction and oxidative polymerization to form a nano composite having electron transfer mutual reaction among ternary interfaces; the feeding mass ratio of graphene oxide, iron(II,III) oxide and aniline is 3:(4-7):(6-24). After theconstructed ternary nano composite is used to fill waterborne coating resin to prepare waterborne nano coatings, it is discovered that the waterborne coatings are better in corrosion resistance than those filled with no nano composite. The ternary nano composite has efficient corrosion resistance, efficient barrier performance and metal surface passivating function.

Description

technical field [0001] The invention relates to the technical field of preparation of functional nano anticorrosion composite materials used for water-based anticorrosion coating materials. Background technique [0002] Metal corrosion refers to the chemical, electrochemical or physical interaction between a metal and its surrounding medium, causing deterioration and damage of the metal. Metal corrosion brings huge losses to the whole society, how to alleviate metal corrosion has become a problem that has attracted much attention. According to statistics, more than 1 / 3 of the total amount of steel is destroyed due to corrosion every year in the world, and 1 / 9 of the total amount of metal corrosion products that cannot be recycled, which causes a huge waste of resources. On the other hand, the corrosion of metal equipment will bring great potential safety hazards to production and life. For example, corrosion of chemical equipment will easily lead to equipment perforation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C08K3/22C08K3/04C09D133/04C09D5/08C09D7/61C09D7/65
CPCC08G73/0266C08K3/04C08K3/22C08K2003/2275C08K2201/011C09D5/08C09D133/04C08L79/02
Inventor 朱爱萍史萍萍
Owner YANGZHOU UNIV
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