Hyperbranched polyether functionalized graphene/epoxy resin nano composite coating as well as preparation method and application thereof

A technology of hyperbranched polyether and epoxy resin, which is applied in the field of coatings, can solve problems such as poor dispersion, complicated preparation methods, and poor anticorrosion performance of epoxy resin, and achieve improved acid resistance, low corrosion rate, and effective impermeability. Effect

Inactive Publication Date: 2020-02-14
CHANGZHOU INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the technical problems of complex preparation method of graphene oxide functionalization, poor dispersion and poor anticorrosion performance of epoxy resin, a hyperbranched polyether functionalized graphene / epoxy resin nanocomposite coating and its preparation method and application are provided. The nanocomposite material of the present invention has excellent anticorrosion properties

Method used

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  • Hyperbranched polyether functionalized graphene/epoxy resin nano composite coating as well as preparation method and application thereof
  • Hyperbranched polyether functionalized graphene/epoxy resin nano composite coating as well as preparation method and application thereof
  • Hyperbranched polyether functionalized graphene/epoxy resin nano composite coating as well as preparation method and application thereof

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Embodiment 1

[0030] The preparation method of hyperbranched polyether functionalized graphene of the present invention is: at room temperature 25 ℃, 10.2mg graphene oxide and 1.019g EHBPE prepared by the above-mentioned method are added in 40mLDMF, and treat with ultrasonic (frequency is 5000Hz) 30 minutes , then add 0.05g tetrabutylammonium bromide, heat to 80°C under the condition of magnetic stirring speed of 300rpm, react for 10h, lower the reaction system to room temperature, wash with water, centrifuge and filter to obtain graphene oxide modified hyperbranched Polyether epoxy resin, hereinafter abbreviated as EHBPE-GO.

[0031] The reaction process is as figure 1 shown.

[0032] Carry out Fourier transform infrared spectrum test to the prepared EHBPE-GO, the result is in 1750cm -1 There is a carbonyl peak on the surface of graphene oxide at 2960cm -1 ~2880cm -1 Attributable to the aliphatic - C-H stretching vibration peak, 1231cm -1 and 1100cm -1 belong to Ph-O-C and C-O-C stre...

Embodiment 2

[0034] A kind of hyperbranched polyether functionalized graphene / epoxy resin nanocomposite coating, is made up of A component and B component, and described A component comprises following components by weight: mixed resin 33.4 parts, antirust pigment: molybdenum 6 parts of zinc acid and 8 parts of zinc phosphate, inorganic pigment: 20 parts of ferric oxide, mineral powder: 4.8 parts of mica and 7.8 parts of talcum powder, organic solvent: xylene and methyl ethyl ketone mixed in a volume ratio of 7:3 for 20 share,

[0035] The B component is 43.6 parts of epoxy resin curing agent LITE3000;

[0036] The mixed resin is composed of hyperbranched polyether functionalized graphene and bisphenol A type epoxy resin prepared in Example 1, and the weight of the hyperbranched polyether functionalized graphene accounts for about 10% of the bisphenol A type ring. 3% of the oxygen resin weight, i.e. 1 part of hyperbranched polyether functionalized graphene, 32.4 parts of bisphenol A type ...

Embodiment 3

[0038] The hyperbranched polyether functionalized graphene / epoxy resin nanocomposite coating of the present embodiment is the same as that of embodiment 2, the difference is that the weight of the hyperbranched polyether functionalized graphene accounts for about 5% of the oxygen resin weight, that is, 1.6 parts of hyperbranched polyether functionalized graphene, and 31.8 parts of bisphenol A epoxy resin.

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Abstract

The invention relates to a hyperbranched polyether functionalized graphene / epoxy resin nano composite coating as well as a preparation method and application thereof. The nano composite coating is composed of a component A and a component B, wherein the component A comprises a mixed resin, an antirust pigment, an inorganic pigment, mineral substance powder and an organic solvent; the component B is an epoxy resin curing agent; the mixed resin is composed of an epoxy resin and hyperbranched polyether functionalized graphene; and the hyperbranched polyether functionalized graphene is 2-10% of the mass of the epoxy resin. A coating prepared from the hyperbranched polyether functionalized graphene / epoxy resin nano composite coating can effectively shield corrosive substances, and shows excellent corrosion resistance, and especially the acid resistance of the nano composite coating is obviously improved and is improved by 50% compared with that of a pure epoxy resin coating.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a hyperbranched polyether functionalized graphene / epoxy resin nanocomposite coating and its preparation method and application. Background technique [0002] Epoxy resin coatings are widely used in various occasions for their excellent adhesion, low shrinkage, good corrosion resistance and chemical resistance. However, its wide application is limited due to its poor corrosion resistance. Therefore, a lot of effort has been made to improve the corrosion resistance of epoxy coatings. Epoxy coatings were chemically or physically modified with thermoplastics, siloxane modifiers, liquid rubber, hyperbranched polymers. Thermoplastics will increase the viscosity of the coating system, which is not conducive to processing; siloxane and liquid rubber will react to induce phase separation, which is sensitive to the processing process, thus affecting the flexibility of resin curing and p...

Claims

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Application Information

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IPC IPC(8): C09D163/00C09D5/08C09D7/62C09D7/61
CPCC08K2003/2272C08K2003/328C09D5/08C09D5/084C09D7/61C09D7/62C09D163/00C08K13/06C08K9/04C08K3/042C08K3/24C08K3/32C08K3/22C08K3/34
Inventor 苗雪佩
Owner CHANGZHOU INST OF TECH
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