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Polymer and graphene blended electroactive composite coating material and method for preparing the same

An anti-corrosion coating, graphene technology, applied in anti-corrosion coatings, polyamide coatings, coatings, etc., can solve problems such as accelerated corrosion rate, oxidative corrosion, etc.

Active Publication Date: 2015-11-04
CHUNG YUAN CHRISTIAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, metals will be slowly oxidized and corroded in the coexistence environment containing water vapor and air; placing them in an aqueous solution of chemicals such as acids, alkalis or salts will accelerate the corrosion rate; even pure liquid metals in contact with air will also produce corrosion. Phenomenon of Oxidation Corrosion

Method used

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  • Polymer and graphene blended electroactive composite coating material and method for preparing the same
  • Polymer and graphene blended electroactive composite coating material and method for preparing the same
  • Polymer and graphene blended electroactive composite coating material and method for preparing the same

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Experimental program
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no. 1 approach

[0070] According to the first embodiment of the present invention, an electroactive composite anticorrosive coating mixed with a polymer and graphene is disclosed, which is a composite material of a specific polymer and graphene, and the specific polymer is made of (A) Aniline oligomers and (B) amine reactive monomers are mixed (C) graphene is modified and then polymerized. It is a polymer selected from the following groups: epoxy compound, polyimide, polyamide , Polyurethane (polyurethane) and polylactic acid, in which (C) modified graphene is uniformly dispersed in the specific polymer structure but does not participate in the polymerization reaction. The polymer is mixed with the electroactive composite of graphene The anti-corrosion coating is electrically active.

[0071] In one embodiment, (A) aniline oligomer is an oligomer composed of 3-8 repeating units in the molecule.

[0072] In one embodiment, (A) the aniline oligomer is an amino-terminated aniline trimer, which has t...

no. 2 approach

[0082] According to the second embodiment of the present invention, a method for preparing an electroactive composite anticorrosive coating mixed with polymer and graphene is disclosed, which includes the following steps in sequence: (1) (A) aniline oligomer and (B) ) Pre-reaction of amine reactive monomers to obtain a polymer precursor (AB); (2) adding (C) modified graphene to the precursor (AB) and mixing uniformly to obtain a mixed solution; and (3) ) Performing the polymerization reaction of the mixed solution to obtain the electroactive composite anticorrosive coating mixed with the polymer and the graphene.

[0083] In one embodiment, when the electroactive composite anticorrosive coating mixed with polymer and graphene is 100% by weight, (C) the modified graphene is 0.1-1.0% by weight.

[0084] In one embodiment, the (B) amine-reactive monomer is a monomer selected from the following group: having the structural formula (B1):

[0085] 4,4'-(4,4'-isopropylidene-diphenoxy)bis(...

Embodiment 1

[0106] Example 1: ACAT+BSAA

[0107] Dissolve 0.288g (1mmol) of aniline trimer (ACAT) and 0.520g (1mmol) of 4'-(4,4'-Isopropylidene-diphenoxy)bis(phthalic anhydride)(BSAA) in 4g DMAc, and The reaction was stirred at room temperature for 20 minutes to obtain an electroactive polyamic acid solution. Then, 0.5 wt% or 1 wt% of graphene was added to the electroactive polyamic acid solution, and the solution was shaken and stirred at room temperature for 30 minutes to obtain an electroactive polyamic acid / graphene (EPAA / Graphene) composite solution. Coat the electroactive polyamic acid / graphene composite solution onto a 1cm×1cm cold-rolled steel sheet, and use a high-temperature furnace to increase the temperature gradually. The temperature will be raised from room temperature to 80℃ in 30 minutes, and then from 80℃ to 100℃ in 6 hours. , 2 hours to 150°C, 2 hours to 170°C, and finally to room temperature, you can get the electroactive polyamic acid / graphene coating layer, and finally ...

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Abstract

The present invention provides a polymer and graphene blended electroactive composite coating material and method for preparing the same. The composite coating material is a composite material formed by blending a specific polymer and graphene; where the specific polymer is formed by polymerization of (A) aniline oligomer and (B) amino reactive monomer together with (C) modified graphene and is a kind of polymer selected by the group consisting of the following: epoxy resin, polyimide, polyamide, polyurethane, polylactic acid; (C) modified graphene is uniformly dispersed in the matrix of the specific polymer but not involved in polymerization; and the composite coating material is electroactive.

Description

Technical field [0001] The invention relates to an anti-corrosion coating and a preparation method thereof, in particular to an electroactive composite anti-corrosion coating mixed with a polymer and graphene and a preparation method thereof. Background technique [0002] Corrosion can be defined as the effect of metal, cement, ceramics and other materials being corroded by the chemical oxidation of the external environment or by the melting of inorganic acids and alkalis, which leads to the deterioration of the mechanical strength of the material and the loss of the composition. Corrosion of various materials is common in daily life, and the economic loss caused by corrosion is very huge, especially the oxidation corrosion of steel, which is estimated to cost more than 8 billion U.S. dollars each year in the United States. [0003] The reaction condition that causes metal corrosion is the oxidation-reduction reaction of electron transfer in the system. Therefore, the reaction rate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D179/08C09D5/08C09D7/12C08G73/10C09D7/48C09D7/62C09D7/65
CPCC09D179/08C09D177/06C08G69/26C08G73/0273C08G73/1053C08G73/1071C09D5/084C08K3/042C09D7/48C09D7/65C09D7/62
Inventor 叶瑞铭张光钦徐健华纪威甫
Owner CHUNG YUAN CHRISTIAN UNIVERSITY
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