Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A durable anti-icing superhydrophobic coating and preparation method thereof

A super-hydrophobic coating, durable technology, applied in coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc., can solve the problem of losing super-hydrophobicity, and achieve excellent ice resistance and good wear resistance. Effect

Active Publication Date: 2019-10-29
NANJING UNIV OF SCI & TECH
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has a certain mechanical stability, it loses its superhydrophobicity when rubbed on a relatively smooth rag, and the maximum friction is 25 cm, so the stability still needs to be improved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A durable anti-icing superhydrophobic coating and preparation method thereof
  • A durable anti-icing superhydrophobic coating and preparation method thereof
  • A durable anti-icing superhydrophobic coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) After the steel is polished, the groove structure is obtained by laser treatment. The depth of the concave structure is 250 μm, and the width is 100 μm; the width of the convex structure is 120 μm;

[0024] (2) After cleaning the sample obtained in step (1), spray a decahydronaphthalene solution with a concentration of 4 g / L ultra-high molecular polyethylene on the surface of the groove structure and dry it to obtain an intermediate polymer layer.

[0025] (3) Al with a particle size of 70 nm 2 o 3 Particles were immersed in 0.06 mol / L ethanol solution of heptadecafluorodecyltriethoxysilane at a temperature of 55 °C for 3.5 h.

[0026] (4) The hydrophobic nano-Al obtained in step (3) 2 o 3 Particles and ultra-high molecular polyethylene are added to decahydronaphthalene to keep Al 2 o 3 The concentration is 35 g / L, and the concentration of ultra-high molecular weight polyethylene is 8 g / L. The above mixture is heated to 150 °C, sprayed on the coating described...

Embodiment 2

[0029] (1) After the steel is polished, the groove structure is obtained by laser treatment. The depth of the concave structure is 200 μm, and the width is 150 μm; the width of the convex structure is 100 μm;

[0030] (2) After cleaning the sample obtained in step (1), spray a decahydronaphthalene solution with a concentration of 5 g / L ultra-high molecular polyethylene on the surface of the groove structure and dry it to obtain an intermediate polymer layer.

[0031] (3) Al with a particle size of 50 nm 2 o 3 Particles were soaked in 0.07 mol / L ethanol solution of heptadecafluorodecyltriethoxysilane, the soaking temperature was 50 °C, and the soaking time was 4 h.

[0032] (4) The hydrophobic nano-Al obtained in step (3) 2 o 3 Particles and ultra-high molecular polyethylene are added to decahydronaphthalene to keep Al 2 o 3 The concentration is 40 g / L, and the concentration of ultra-high molecular weight polyethylene is 6 g / L. The above mixture is heated to 150 °C, spray...

Embodiment 3

[0035] (1) After the steel is polished, the groove structure is obtained by laser treatment. The depth of the concave structure is 300 μm, and the width is 50 μm; the width of the convex structure is 200 μm;

[0036] (2) After cleaning the sample obtained in step (1), spray a decahydronaphthalene solution with a concentration of 3 g / L ultra-high molecular polyethylene on the surface of the groove structure and dry it to obtain an intermediate polymer layer.

[0037] (3) Al with a particle size of 90 nm 2 o 3 Particles were soaked in 0.08 mol / L ethanol solution of heptadecafluorodecyltriethoxysilane, the soaking temperature was 60 °C, and the soaking time was 3 h.

[0038] (4) The hydrophobic nano-Al obtained in step (3) 2 o 3 Particles and ultra-high molecular polyethylene are added to decahydronaphthalene to keep Al 2 o 3The concentration is 30 g / L, and the ultra-high molecular weight polyethylene concentration is 8 g / L. The above mixture is heated to 150 °C, sprayed on...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
depthaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a durable ice-resistant super-hydrophobic coating and a preparation method thereof. The durable ice-resistant super-hydrophobic coating consists of a metal trench structure at the bottom, a macromolecule layer in the middle and a nanoparticle-macromolecule composite layer on the upper part, smooth steel is used as a substrate, after a trench structure is etched by laser, a pure macromolecule coating coats the trench structure, and then a macromolecule-nano composite coating is sprayed on the pure macromolecule coating to obtain the durable ice-resistant super-hydrophobic coating. The preparation method comprises the following steps: firstly, etching the regular trench structure in the surface of the smooth steel by laser; secondly, after carrying out O2 plasma treatment on the steel, spraying ultra high molecular weight polyethylene in a molten state at high temperature, and drying to form a film; and finally, spraying an ultra high molecular weight polyethylene and hydrophobic nano Al2O3 mixture, and drying to obtain the required coating. The super-hydrophobic coating has good mechanical stability and environmental persistence, and has excellent ice resistance.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a durable ice-resistant superhydrophobic coating and a preparation method thereof. Background technique [0002] The surface of lotus leaves in nature is extremely non-wetting to water, which is called superhydrophobic phenomenon. It has been found through research that the surface of the lotus leaf has a micron and nanometer level structure, and the surface is covered with a layer of wax with low surface energy, so it has super-hydrophobic properties. Therefore, biomimetic superhydrophobic interfaces can be obtained by preparing such hierarchical structures in various ways and subsequent low surface energy modification. [0003] Due to its excellent water resistance and water repellency, superhydrophobic interfaces have great application prospects in the fields of underwater drag reduction, self-cleaning surfaces, metal protection, and anti-icing and anti-icing fields. The main problem ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/00B05D5/08B05D7/00B05D7/14B05D3/00
CPCB05D3/002B05D5/00B05D5/08B05D7/14B05D7/544B05D2202/10B05D2301/00B05D2350/30B05D2507/01B05D2420/01B05D2420/02
Inventor 熊党生王楠
Owner NANJING UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com