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Cored wire with super-hydrophobic function and application of cored wire with super-hydrophobic function to preparation of coating with super-hydrophobic function

A super-hydrophobic, functional powder technology, applied in metal material coating process, coating, melt spraying and other directions, can solve the problems of large-area preparation of difficult-to-super-hydrophobic surfaces, limited application of super-hydrophobic surfaces, and inability to realize industrial applications, etc. Achieving good self-cleaning, excellent corrosion resistance and low cost

Active Publication Date: 2017-05-17
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] It has been found that the wettability of solid surfaces is determined by the chemical composition and microscopic geometry of the surface. Surface roughness and surface chemical composition are necessary conditions for superhydrophobicity. Due to the low mechanical stability of the two, superhydrophobic surfaces are limited in practical application
At present, there are many surface technologies to achieve super-hydrophobic properties, but the process is relatively complicated, and it is difficult to achieve large-scale preparation of super-hydrophobic surfaces, and industrial applications cannot be realized. Therefore, it is easy to operate, simple in process, and good in repeatability. The preparation of superhydrophobic functional coatings and their preparation technologies that are beneficial to industrial applications is still an urgent problem to be solved in this field

Method used

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  • Cored wire with super-hydrophobic function and application of cored wire with super-hydrophobic function to preparation of coating with super-hydrophobic function
  • Cored wire with super-hydrophobic function and application of cored wire with super-hydrophobic function to preparation of coating with super-hydrophobic function
  • Cored wire with super-hydrophobic function and application of cored wire with super-hydrophobic function to preparation of coating with super-hydrophobic function

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Experimental program
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Effect test

Embodiment 1

[0045] In this embodiment, the base material is 316L stainless steel, the coating has a good bonding force with the base, and the coating thickness is 250 μm. The concrete preparation method of this superhydrophobic functional coating:

[0046] (1) Preparation of powder core wire: the coat of powder core wire is 316L stainless steel, the width of the steel strip is 12 mm, and the thickness is 0.3 mm. The powder core is a mixed powder of metallic pure aluminum and polytetrafluoroethylene, wherein the size of metallic pure aluminum is 40-60 μm, PTFE powder is 12 μm, the mass ratio of metal pure aluminum to PTFE is 6:4, the diameter of powder core wire is 2mm, and the powder coating rate is 10wt.%.

[0047] (2) Coating preparation: prepared by supersonic arc spraying process, the specific spraying parameters are: current 120A, voltage 40V, compressed air pressure 0.8MPa, spraying distance 200mm, arc gun moving speed 25mm / s, spraying times 3 times .

[0048] (3) Characterization...

Embodiment 2

[0055] In this embodiment, the base material is cast iron, the coating has a good bonding force with the base, and the thickness of the coating is 300 μm. The concrete preparation method of this superhydrophobic functional coating:

[0056] (1) Preparation of powder core wire material: the coat of the powder core wire material is pure aluminum, the width of the aluminum strip is 8mm, and the thickness is 0.3mm. The powder core is a mixed powder of metallic pure aluminum and polyfluoroethylene propylene. 40-60 μm, FEP powder is 5-10 μm, the mass ratio of metal pure aluminum to FEP is 5:5, the diameter of powder core wire is 2mm, and the powder coating rate is 15wt.%.

[0057] (2) Coating preparation: prepared by supersonic arc spraying process, the specific spraying parameters are: current 100A, voltage 38V, compressed air pressure 0.8MPa, spraying distance 250mm, arc gun moving speed 25mm / s, spraying times 4 times .

[0058] (3) Characterization of coating performance: The m...

Embodiment 3

[0060] In this embodiment, the base material is cast iron, the coating has a good bonding force with the base, and the thickness of the coating is 300 μm. The concrete preparation method of this superhydrophobic functional coating:

[0061] (1) Preparation of powder core wire material: the powder core wire coat is a nickel-chromium alloy strip, the strip width is 12mm, and the thickness is 0.3mm. The powder core is a mixed powder of metal nickel-chromium alloy powder and polytetrafluoroethylene, wherein, The metal nickel-chromium alloy powder is 40-60 μm, the polytetrafluoroethylene powder is 25 μm, the mass ratio of metal nickel-chromium alloy powder to polytetrafluoroethylene is 8:2, the diameter of the powder core wire is 2mm, and the powder coating rate is 25wt. %.

[0062] (2) Coating preparation: prepared by supersonic arc spraying process, the specific spraying parameters are: current 150A, voltage 40V, compressed air pressure 0.8MPa, spraying distance 300mm, arc gun m...

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Abstract

The invention provides a cored wire with a super-hydrophobic function. The cored wire with the super-hydrophobic function comprises a cored material and a metal wire coat, wherein the metal wire coat is used for coating the cored material. The cored material is formed by a metal cored material and a high molecular cored material through mixing. The metal cored material is selected from metal aluminum, copper, nickel and chromium or is any one kind of alloy formed by two kinds of the metal. The high molecular cored material is at least one of teflon, fluorinated ethylene-propylene, polytrifluorochloroethylene, polyvinylidene fluoride, ethylene-tetrafluoroethylene copolymer, ethylene-chlorotrifluoroethylene copolymer, polyvinyl fluoride, fluorocarbon resin and polyurethane. The invention further provides a coating with a super-hydrophobic function. The coating with the super-hydrophobic function is made of cored wires with the super-hydrophobic function and prepared through a thermal spraying technology. The coating has excellent super-hydrophobic performance and corrosion resistance, and has the good application prospect in the fields of self-cleaning, marine pollutant prevention, contamination resistance and the like.

Description

technical field [0001] The invention relates to the technical field of super-hydrophobic functional coatings, in particular to a super-hydrophobic functional powder core wire material and its application in preparing super-hydrophobic functional coatings. Background technique [0002] The superhydrophobic phenomenon means that the contact angle between the surface and water is greater than 150°, and the rolling angle is less than 10°. Due to the special wetting properties of the super-hydrophobic surface, it can be used in self-cleaning of industrial devices and buildings, self-cleaning and anti-flashover of high-voltage electrical equipment, application of biomedical and bionic materials, pipeline waterproofing and corrosion resistance, drag reduction and energy saving , power transmission towers and cables have potential application prospects in many aspects such as anti-ice and snow in winter. It is precisely because of such a demand that it is extremely important to stu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/067C23C4/131C23C4/129
Inventor 黄晶所新坤龚永锋房立家刘奕周平李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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