A kind of method that utilizes flame spraying technology to prepare superlubricating surface of imitation pitcher plant

A flame spraying, pitcher plant-like technology, applied in coating, polyether coating, melt spraying and other directions, can solve problems such as limiting the scope of application, and achieve the effects of reliable process, simple operation and low preparation cost

Active Publication Date: 2020-07-07
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

However, this preparation method has a big disadvantage, that is, the metal substrate used can only be metal aluminum, and it can only realize the atmospheric corrosion protection of metal aluminum, so its application range is greatly limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Substrate surface cleaning: take glass as the substrate, wash it with acetone, alcohol and deionized water in sequence, and dry it with nitrogen gas for later use;

[0040] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 40 seconds, and the number of sand shot used for sandblasting is 200 mesh;

[0041] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% titanium dioxide powder and 1.5% aluminum powder by mass percentage, and the particle diameters of the titanium dioxide powder and the aluminum powder are respectively 25nm and 300nm. A nano-ceramic coating was constructed on the surface of the substrate by means of s...

Embodiment 2

[0046] (1) Substrate surface cleaning: take carbon steel as the substrate, wash it with acetone, alcohol, and deionized water in sequence, and dry it with nitrogen gas for later use;

[0047] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 50 mesh;

[0048] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% nano-alumina powder and 1.5% aluminum powder by mass percentage, and the particle size of alumina and aluminum powder Both are 300nm. The nano-ceramic coating was constructed on the surface of the substrate by means of suspension flame spraying, with a thicknes...

Embodiment 3

[0052] (1) Substrate surface cleaning: take carbon steel as the substrate, wash it with acetone, alcohol, and deionized water in sequence, and dry it with nitrogen gas for later use;

[0053] (2) Roughening of the surface of the substrate: The surface of the cleaned substrate is roughened by sandblasting to increase the surface roughness of the substrate and improve the bonding strength of the coating. The process parameters adopted are air pressure 1.0MPa, sandblasting time 20 seconds, and the number of sand shot used for sandblasting is 50 mesh;

[0054] (3) Construction of the nano-ceramic coating on the surface of the substrate: a mixed solvent of 50% ethanol-water is used to prepare a raw material suspension of 5% nano-titanium dioxide powder, 1% aluminum powder and 1% copper powder by mass percentage, and the titanium dioxide particle The particle size of the aluminum powder is 25nm, the particle size of the aluminum powder is 300nm, and the particle size of the copper p...

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Abstract

The invention discloses a method for preparing a pitcher plant imitated super-lubricative surface by using a flame spraying technology. A nano ceramic coating is constructed on the surface of a substrate by using a flame spraying technology, and then the nano ceramic coating is sequentially modified by a low-surface-energy substance and covered with lubricating oil to obtain the pitcher plant imitated super-lubricative surface. The invention provides a method for preparing a pitcher plant imitated super-lubricative surface, which is convenient and simple, has good repeatability and is suitablefor large-area preparation and industrial application. The prepared pitcher plant imitated super-lubricative surface can effectively prevent the existence of water drops on the surface of a material.

Description

technical field [0001] The invention relates to the field of preparation of super-lubricating surfaces, in particular to a method for preparing super-lubricating surfaces imitating nepenthes by means of flame spraying technology. Background technique [0002] Nepenthes are a class of tropical carnivorous plants that possess a unique pitcher-shaped organ that is shaped like a pig's cage for absorbing nutrients—the pitcher. The mouth of the vase is infiltrated with honey, making it very smooth, and the insects that stay on it will slide down into the vase, where they will be decomposed and digested by the liquid secreted from the bottom of the vase to become their own nutrients. [0003] Inspired by the superlubricating properties of the surface of Nepenthes, scientists poured lubricating fluid into porous micro / nanostructured substrates to develop a smooth porous surface SLIPS (Wong TS, Kang SH, Tang SKY, Smythe EJ, HattonBD, Grinthal A, Aizenberg J. Nature, 2011, 477(7365):...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C4/129C23C4/02C23C4/06C09D1/00C09D7/61C09D171/00
Inventor 张波涛陈秀勇龚永锋黄晶李华
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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