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Graphene-added micro-arc oxidation epoxy strontium yellow composite coating and preparation method thereof

A composite coating and micro-arc oxidation technology, applied in epoxy resin coatings, coatings, anti-corrosion coatings, etc., can solve problems such as damage to aluminum alloy substrates, and achieve the effect of enhancing corrosion resistance and improving bonding strength.

Inactive Publication Date: 2019-02-15
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sand blasting will cause certain damage to the aluminum alloy substrate

Method used

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  • Graphene-added micro-arc oxidation epoxy strontium yellow composite coating and preparation method thereof
  • Graphene-added micro-arc oxidation epoxy strontium yellow composite coating and preparation method thereof
  • Graphene-added micro-arc oxidation epoxy strontium yellow composite coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A kind of adding graphene micro-arc oxidation epoxy strontium yellow composite coating, the formula of micro-arc oxidation electrolyte is as follows: Na 2 SiO 3 10g / L, KOH 5g / L, KF 5g / L, additive is 0.5g / L graphene solution.

[0028] A preparation method for adding graphene micro-arc oxidation epoxy strontium yellow composite coating, comprising the steps of:

[0029] Step 1: Add Na to the reaction vessel 2 SiO 3 and KF, adding KOH to adjust the pH to 10, and then adding graphene for 10min ultrasonic treatment to obtain a graphene micro-arc oxidation layer. The parameters of the micro-arc oxidation process are: fixed frequency 500 Hz, duty cycle 10-15%, voltage 350 V, electrolysis time 12 minutes under constant voltage mode, micro-arc oxidation refers to the instantaneous high temperature and high pressure generated by metals such as aluminum, magnesium, and titanium through arc discharge, and in situ growth of a ceramic layer mainly based on matrix oxide on the su...

Embodiment 2

[0033] A kind of adding graphene micro-arc oxidation epoxy strontium yellow composite coating, the formula of micro-arc oxidation electrolyte is as follows: Na 2 SiO 3 12.5g / L, KOH 3.5g / L, KF4g / L, the additive is 0.4g / L graphene solution, and the pH of the micro-arc oxidation electrolyte is 9.5.

[0034] A preparation method for adding graphene micro-arc oxidation epoxy strontium yellow composite coating, comprising the steps of:

[0035] Step 1: Add Na to the reaction vessel 2 SiO 3 and KF, adding KOH to adjust the pH to 10, and then adding graphene for 10min ultrasonic treatment to obtain a graphene micro-arc oxidation layer. The parameters of the micro-arc oxidation process are: fixed frequency 500 Hz, duty cycle 10-15%, voltage 350 V, electrolysis time 12 minutes under constant voltage mode, micro-arc oxidation refers to the instantaneous high temperature and high pressure generated by metals such as aluminum, magnesium, and titanium through arc discharge, and in situ...

Embodiment 3

[0039] A kind of adding graphene micro-arc oxidation epoxy strontium yellow composite coating, the formula of micro-arc oxidation electrolyte is as follows: Na 2 SiO3 15g / L, KOH 2g / L, KF 3g / L, additive is 0.3g / L graphene solution.

[0040] A preparation method for adding graphene micro-arc oxidation epoxy strontium yellow composite coating, comprising the steps of:

[0041] Step 1: Add Na to the reaction vessel 2 SiO 3 and KF, adding KOH to adjust the pH to 10, and then adding graphene for 10min ultrasonic treatment to obtain a graphene micro-arc oxidation layer. The parameters of the micro-arc oxidation process are: fixed frequency 500 Hz, duty cycle 10-15%, voltage 350 V, electrolysis time 12 minutes under constant voltage mode, micro-arc oxidation refers to the instantaneous high temperature and high pressure generated by metals such as aluminum, magnesium, and titanium through arc discharge, and in situ growth of a ceramic layer mainly based on matrix oxide on the surf...

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Abstract

The invention relates to the technical field of metal surface corrosion protection, and discloses a graphene-added micro-arc oxidation epoxy strontium yellow composite coating and a preparation methodthereof. The Graphene-added micro-arc oxidation epoxy strontium yellow composite coating comprises an epoxy strontium yellow coating and graphene-added micro-arc oxidation electrolyte, wherein the epoxy strontium yellow coating comprises an A component and a B component; the A component comprises an epoxy resin, a pigment filler, an auxiliary agent and a graphene composite filler; the B componentcomprises a curing agent; and the formula of the micro-arc oxidation electrolyte comprises 10-15 g / L of Na2SiO3, 2-5 g / L of KOH, 3-5 g / L of KF, 0.3-05 g / L of an additive which is graphene solution. Compared with epoxy strontium yellow composite coatings under sandblasting pretreatment conditions, the graphene-added micro-arc oxidation epoxy strontium yellow composite coating is capable of solvingthe problem of surface defects of micro-arc oxidation layers through adding graphene in the micro-arc oxidation layers, and simultaneously solving the problems that the epoxy strontium yellow coatings are lowly bound with matrixes and the whole protection system is bad in corrosion resistance by combining the epoxy strontium yellow coatings with graphene micro-arc oxidation.

Description

technical field [0001] The invention relates to the technical field of metal surface corrosion protection, in particular to a graphene micro-arc oxidation epoxy strontium yellow composite coating and a preparation method thereof. Background technique [0002] During the coating process of the epoxy strontium yellow coating, it is found that the bonding force between the epoxy strontium yellow coating and the substrate is generally not high and needs to be further improved. Aiming at the problem of low bonding strength between the paint and the substrate, it is mainly solved by pretreatment of the substrate. Sand blasting is mostly used now to remove impurities on the surface of the substrate, increase the roughness, and improve the bonding between the coating and the substrate. Sand blasting will cause certain damage to the aluminum alloy substrate. Contents of the invention [0003] The object of the invention is to provide a graphene micro-arc oxidation epoxy strontium...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/08C09D7/61
CPCC09D5/08C09D7/61C09D163/00C08K3/042
Inventor 孙晓峰宋巍李占明郝松松邱骥史玉鹏巴德玛蔡志海杜晓坤
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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