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A kind of polyethylene polyamine-graphene hybrid curing agent and its preparation method and application method

A technology of polyethylene polyamine and its application method, which is applied in coatings, anti-corrosion coatings, epoxy resin coatings, etc., can solve problems such as large differences in molecular structure and poor interface compatibility, and achieve improved salt spray resistance time , Good storage stability, and the effect of improving mechanical properties

Active Publication Date: 2021-07-09
中国人民解放军92228部队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular structures of graphene oxide and epoxy resin are very different, and the interfacial compatibility between them is not good.

Method used

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  • A kind of polyethylene polyamine-graphene hybrid curing agent and its preparation method and application method
  • A kind of polyethylene polyamine-graphene hybrid curing agent and its preparation method and application method
  • A kind of polyethylene polyamine-graphene hybrid curing agent and its preparation method and application method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] First, 100 grams of multi-layer oxide oxide is first dispersed in 2000 grams of deionized water under stirring, and 200 grams of hydrogen peroxide is dispersed in 1000 grams of deionized water to prepare an oxide dispersion, followed by After stirring, the oxide dispersion droplets were added to the graphene dispersion to stir well, and the ultrasonic treatment was treated for 120 minutes, the ultrasonic treated product was centrifuged to remove deionized water, then add 180 grams of tetraethylene pentamine 120 ° C reaction. After 0.5 hours, the reaction was stopped, and the reaction product was repeatedly washed with deionized water, and the free compound was removed by centrifugation or filtered to give a polyvinyl-graphene hybrid curing agent.

[0024] 0.1 g of polyethylene polyamine-graphene hybrid fixing agent with 99.9 grams of epoxy quantity 455-556 (g.mol -1 The bisphenol F-type epoxy resin is mixed and uniform, and the coating is applied to the surface of the metal...

Embodiment 2

[0026] 100 grams of bilayer oxide oxide is first dispersed under stirring to prepare a graphene dispersion in 1000 grams of deionized water while dispersing 10 grams of sodium oxide is dispersed in 100 grams of deionized water to prepare a peroxide dispersion. Under stirring, the peroxide dispersion droplets were added to the oxide oxide dispersion to stir well, 10 minutes for ultrasonic treatment for 10 minutes, and the ultrasonic treatment was centrifuged to remove deionized water, and 10 grams of diethylene triamine room temperature reaction was added 24 hours. After the reaction, the reaction product was removed with deionized water and centrifuged or filtered to remove the free compound to give a polyethylene polyamine-graphene hybrid fixing agent.

[0027] 30 grams of polyethylene polyamine-graphene hybrid curing agent and 70 grams of epoxy equivalent 185-208 (g.mol -1 After mixing the aliphatic epoxy resin, the coating is applied to the surface of the metal test piece with ...

Embodiment 3

[0029] The 100 grams of oxidation of multi-layer graphene was first dispersed under the stirred conditions of 2000 g of carbide dispersion, and 10 grams of oxidized dibenzoyl is dispersed in 100 g of toluene to prepare an oxide dispersion. Next, the peroxide dispersion droplets were stirred evenly under stirring, and the mixture was mixed well, and the reaction product was stopped after 2 hours by ultrasonic treatment for 2 hours, and the reaction product was stopped using ultrasonic waves. Repeated washing, and the free compound was removed or filtered to give a polyvinyl amine-graphene hybrid curing agent.

[0030] 3 g of a polyethylene polyamine-graphene hybrid curing agent was mixed with 97 g of an epoxy equivalent 455-556 (g. Mol-1), and the coating was applied with a dipping method. The surface of the metal test was solidified for two weeks at room temperature. In the same mass ratio of unreformed oxidation, multi-layer graphene is added to the epoxy resin of the same mass, ...

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Abstract

A kind of polyvinylpolyamine-graphene hybrid curing agent and preparation method and application method thereof, the curing agent comprises the following components by weight: 100 parts of graphene oxide, 1-300 parts of peroxide, 1-300 parts of dispersant 5000 parts and 1-200 parts of polyethylene polyamine, firstly dispersing graphene oxide in a dispersing agent to prepare a graphene oxide dispersion liquid, simultaneously preparing a peroxide dispersion liquid in a peroxide dispersing agent, then dispersing the peroxide The dispersion is added dropwise to the graphene oxide dispersion liquid, ultrasonically treated, then polyvinylpolyamine is added, the reaction product is repeatedly washed with a dispersant, and free compounds are removed to obtain polyvinylpolyamine-graphene hybrid curing agent, which is added It is mixed into epoxy resin, mixed evenly and configured into anti-corrosion coating, which is coated on the surface of metal substrate to prepare anti-corrosion coating. The curing agent of the invention is simple to prepare, has mild reaction conditions, can improve the anti-corrosion performance of the coating, and can also be used for curing the epoxy coating.

Description

Technical field [0001] The present invention belongs to the technical field of coatings, particularly a polyethylene polyamine-graphene hybrid fixing agent and a preparation method thereof and a method of application thereof. Background technique [0002] The epoxy resin-based preservative coating is the most used anticorrosive coating variety, and the epoxy resin coating needs to be added to improve its anti-corrosion resistance, and the epoxy resin coating also needs to be added to solidify the film. The usual filler is inert, and only the effect of improving the anti-corrosion performance of the coating can not achieve the curing of the coating. At present, the process is simple, and the cost of low-cost graphene modification is the future development direction, but the commonly used modification method is complex, such as: a strong acid process and complex treatment equipment, high processing cost, time-free and other disadvantages. [0003] The graphene nano-scales can be la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D7/62C09D163/00C09D5/08
CPCC09D5/08C09D163/00C09D7/62C08K9/04C08K3/042
Inventor 杨延格吴航曹京宜张寒露赵伊褚广哲王福会
Owner 中国人民解放军92228部队
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