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Anticorrosive coating for nano metal and preparation method of anticorrosive coating

An anti-corrosion coating and nano-metal technology, which is applied in the direction of anti-corrosion coatings, coatings, and devices for coating liquid on the surface, can solve the problems of unfavorable long-term and effective protection of metal nano-materials, and achieve long-term stability and little impact on physical properties , cost-effective effect

Pending Publication Date: 2020-12-22
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, defects will inevitably be introduced during the preparation and transfer of two-dimensional materials, which will not be conducive to the long-term effective protection of metal nanomaterials.

Method used

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  • Anticorrosive coating for nano metal and preparation method of anticorrosive coating

Examples

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Effect test

Embodiment 1

[0021] Copper nano film—PVP—hBN: Copper nano film with a thickness of 60nm was prepared by electron beam evaporation coating method. up to 1×10 -7 At bar, the film growth rate was controlled at ~2A / s, and the thickness of the evaporated film was monitored by a calibrated quartz microcrystal balance. It should be noted that before copper plating, a 1.5nm thick chromium film (film growth rate: ~0.6A / s) needs to be evaporated on the glass substrate to be used as an adhesive between the glass substrate and the copper film . Then the high polymer PVP (2%PVP, solvent: deionized water, PVP molecular weight: 1300000) coating spin-coating with thickness less than 20nm is placed on the surface of the above-mentioned copper nano film structure, wherein the spin-coating speed is 6000r / min, spin-coating The time is 2 minutes. Finally, the 1 × 1 cm 2 The specific process is as follows: firstly, the PMMA solution is spin-coated on the iron foil surface with hBN grown by CVD method, and t...

Embodiment 2

[0023] Silver nanowires-PMMA-bilayer graphene: First, the silver nanowire structure is placed on the surface of a clean silicon wafer substrate. Then, a polymer PMMA (0.1% PMMA, solvent: chlorobenzene) coating with a thickness of less than 10 nm was spin-coated on the surface of the silver nanowire structure, and baked at 120° C. for 3 minutes. Wherein the spin coating speed is 8000r / min, and the spin coating time is 2min. Finally, the 1×1cm 2 The single-layer CVD graphene of the above-mentioned silver nanowire structure surface is transferred to the surface of the above-mentioned silver nanowire structure. 2 , cleaning time: 20s) to remove pollutants and oxides on the back of the copper foil (the side without graphene); then use 25g / l ammonium persulfate solution to etch off the copper foil; use deionized water to wash the attached Graphene with PMMA; then transfer it to the silver nanowire structure surface containing high polymer PMMA coating, after drying at 120 ° C for ...

Embodiment 3

[0025] Silver nanofilm—PDMS—double-layer hBN: A silver nanofilm with a thickness of 50nm was prepared by electron beam evaporation coating method. Bulk vacuum up to 1×10 -7 At bar, the film growth rate was controlled at ~5A / s, and the thickness of the evaporated film was monitored by a calibrated quartz microcrystal balance. It should be noted that before the silver coating, a 1.5nm thick chromium film (film growth rate: ~0.6A / s) needs to be evaporated on the glass substrate to be used as an adhesive between the glass substrate and the silver film . Then the high polymer PDMS with thickness less than 20nm (using silicone oil to dilute PDMS (the mass ratio of silicone oil and PDMS is 1:1)) coating is spin-coated and placed on the surface of the above-mentioned silver nano film structure, wherein the spin-coating speed is 8000r / min, Spin coating time is 2min. Finally, the 1×1cm 2 The specific process is as follows: firstly, the PMMA solution is spin-coated on the surface of ...

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Abstract

The invention discloses an anticorrosive coating for nano metal and a preparation method of the anticorrosive coating. The anticorrosive coating comprises a polymer coating and a two-dimensional material coating, the polymer coating is arranged on the surface of an easily oxidized precious metal nano structure, and the polymer and two-dimensional material nano coating is formed on the surface of the metal nano structure after a two-dimensional material is transferred. The polymer coating is any one of a polyvinylpyrrolidone (PVP) layer, a polymethyl methacrylate (PMMA) layer and a polydimethylsiloxane (PDMS) layer, and the two-dimensional material is graphene or hexagonal boron nitride (hBN). The polymer and two-dimensional material mixed coating prepared by the invention can protect an easily oxidized metal nano material, and is beneficial to the long-term stable use of the nano structure.

Description

technical field [0001] The invention relates to the technical field of nanometer metal and anticorrosion, in particular to an anticorrosion coating for easily oxidizable metal nanomaterials and a preparation method thereof. Background technique [0002] With the rapid development of information technology, metal nanomaterials have important applications in the fields of highly integrated nano-optoelectronic devices, biosensing, and flexible devices. However, because the surface of metal nanoparticles is easily oxidized in the air, its application in actual production and life is greatly limited. Unlike bulk metals, nano-metal materials are easily affected by the thickness of the anti-corrosion coating, and the thickness of the coating obtained by the existing coating technology is relatively thick, which inevitably affects the original physical properties of metal nano-materials. Therefore, it is necessary to provide an anti-corrosion coating material with a nanoscale thick...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D3/00B05D1/00B05D7/24B05D1/36C09D5/08
CPCB05D5/00B05D3/002B05D1/005B05D7/24B05D7/54B05D7/58C09D5/08
Inventor 吴帆樊威
Owner XI'AN POLYTECHNIC UNIVERSITY
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