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Micro-nanostructure composite coating and preparation method thereof

A technology of micro-nano structure and composite coating, which is applied in the direction of coating, metal material coating process, superimposed layer plating, etc. Functional limitations and other issues, to achieve the effect of high specific surface area, important application value, and good roughness

Inactive Publication Date: 2016-08-31
SHAOXING SPRAY MICRONANO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented composite material can be used for creation of coatings that have excellent properties such as strong adhesive power or controlled water repelling ability. These materials are also able to form different types of crystal structures called tetragonal phase (TiO2). They exhibit unique fractal shapes when viewed at certain angles due to their structure.

Problems solved by technology

Technological Problem: Current techniques used to create titanic acid nanoparticles require expensive starting materials and complex manufacturing processes. Thermal Spraying Processes can be applied without these drawbacks but they face challenges like achieving desired particle sizes and controllable thickness distributions within target areas.

Method used

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  • Micro-nanostructure composite coating and preparation method thereof
  • Micro-nanostructure composite coating and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0030] In this embodiment, the selected substrate is a 316L stainless steel sheet with a thickness of about 2 mm, and the TiO 2 The thickness of the composite coating is about 250 μm, of which the metal Al coating is 200 μm, and the micronano TiO 2 The coating is 50 microns, and the coating is a porous micro-nano structure, mainly nano-TiO 2 Particles are accumulated on the surface of the rough sprayed Al coating, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0031](1) Mix deionized water and absolute ethanol at a volume ratio of 1:1 to make a solution, add commercially available P25 nano-powder with an average particle size of 25nm at 4.5 wt% to the above prepared solution, and magnetically stir to mix evenly. Add polyurethane (PU) and polyvinylpyrrolidone (PVP K30) at...

Embodiment 2

[0040] In this embodiment, the selected substrate is a 316L stainless steel sheet with a thickness of about 2 mm, and the TiO 2 The thickness of the composite coating is about 150 μm, of which the metal Al coating is 100 μm, and the micronano TiO 2 The coating is 50 microns, and the coating is a porous micro-nano structure, mainly nano-TiO 2 Particles are accumulated on the surface of the rough sprayed Al coating, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0041] (1) Mix deionized water and absolute ethanol at a volume ratio of 3:1 to make a solution, add commercially available P25 nano-powder with an average particle size of 25nm at 5 wt% to the above prepared solution, and magnetically stir to mix evenly. Add polyurethane (PU) at 1.5 wt% to the above-mentioned mixe...

Embodiment 3

[0050] In this embodiment, the base material is selected as a low-carbon steel sheet with a thickness of about 2 mm, and the TiO 2 The thickness of the composite coating is about 150 μm, of which the metal nickel-chromium-titanium coating is 100 μm, and the micronano TiO 2 The coating is 50 microns, and the coating is a porous micro-nano structure, mainly nano-TiO 2 The particles are accumulated on the surface of the rough sprayed nickel-chromium-titanium coating, and the TiO in the coating 2 The crystal forms are anatase phase and rutile phase, and the anatase phase has no obvious transformation, and the coating is well combined with the substrate. The concrete preparation method of this coating is as follows:

[0051] (1) Mix deionized water and absolute ethanol at a volume ratio of 5:1 to make a solution, add commercially available P25 nano-powder with an average particle size of 25nm at 5wt% to the above prepared solution, and magnetically stir to mix evenly. Polyuretha...

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Abstract

The invention relates to a micro-nanostructure composite coating and a preparation method thereof and belongs to the technical field of catalysts. The coating sequentially comprises a substrate, an anti-corrosion metal layer and a titanium dioxide layer from bottom to top. The anti-corrosion metal layer serves as a priming layer, the TiO2 layer is formed by spraying liquid materials in a thermal spraying mode, the prepared TiO2 composite coating has the characteristics of being resistant to corrosion, high in bonding strength, controllable in surface hydrophilicity and hydrophobicity, high in specific surface area and the like, and the photocatalytic function of the TiO2 coating is achieved easily.

Description

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Claims

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Application Information

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Owner SHAOXING SPRAY MICRONANO TECH
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