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Durable super-hydrophobic candle ash coating and preparation method thereof

A super-hydrophobic and durable technology, applied in coatings, metal material coating processes, devices for coating liquids on surfaces, etc., can solve problems such as coating damage, surface roughness difficult to control, and low life, and achieve improved The effect of corrosion resistance, good mechanical stability, and superior self-cleaning performance

Pending Publication Date: 2022-02-25
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The purpose of the invention is to provide a durable superhydrophobic candle soot coating, which solves the problems that the existing coating is easily damaged by mechanical external force, has a low service life and is difficult to control the surface roughness
[0004] Another object of the present invention is to provide a method for preparing a durable superhydrophobic candle soot coating, which solves the problems of expensive materials and complex processes in the existing methods

Method used

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  • Durable super-hydrophobic candle ash coating and preparation method thereof
  • Durable super-hydrophobic candle ash coating and preparation method thereof
  • Durable super-hydrophobic candle ash coating and preparation method thereof

Examples

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Effect test

Embodiment 1

[0029] Such as figure 1 As shown in the preparation of durable superhydrophobic candle soot coating, the specific steps are as follows:

[0030] Step 1): Immerse a 2cm×2cm×0.25cm copper sheet and a stainless steel sheet with a purity of 99.99% in a 95% ethanol solution, and clean it with an ultrasonic cleaner (set at 25°C) for 10 minutes to remove impurities on the surface of the substrate and grease. The copper piece is connected to the anode of the power supply, the stainless steel piece is connected to the cathode of the power supply, and the copper piece and the stainless steel piece are immersed in the copper sulfate electrolyte solution at the same time. Turn on the power and set the parameters to a current density of 0.00075mm 2 / A, the voltage is 3V, and the power-on time is 30min. After the power-on is completed, the copper sheet will produce a microscopic appearance of micro-nano level unevenness. Then use an ultrasonic cleaner (parameter setting temperature 25°C)...

Embodiment 2

[0038] To prepare a durable superhydrophobic candle soot coating, the specific steps are as follows:

[0039] Step 1): Immerse a 2cm×2cm×0.25cm copper sheet and a stainless steel sheet with a purity of 99.99% in a 95% ethanol solution, and clean it with an ultrasonic cleaner (set at 25°C) for 10 minutes to remove impurities on the surface of the substrate and grease. The copper piece is connected to the anode of the power supply, the stainless steel piece is connected to the cathode of the power supply, and the copper piece and the stainless steel piece are immersed in the copper sulfate electrolyte solution at the same time. Turn on the power and set the parameters to a current density of 0.00060mm 2 / A, the voltage is 3V, and the power-on time is 30min. After the power-on is over, the copper sheet will produce a micro-nano-level uneven texture. Then use an ultrasonic cleaner (parameter setting temperature 25° C.) with 95% ethanol as a cleaning solvent to clean the chemical...

Embodiment 3

[0048] To prepare a durable superhydrophobic candle soot coating, the specific steps are as follows:

[0049] Step 1): immerse 2cm×2cm×0.25cm copper and zinc sheets with a purity of 99.99% in 95% ethanol solution, and clean them with an ultrasonic cleaner (temperature set at 25°C) for 10 minutes to remove impurities on the surface of the substrate and grease. The zinc piece is connected to the anode of the power supply, and the copper piece is connected to the cathode of the power supply, and the copper piece and the zinc piece are immersed in the dilute sulfuric acid electrolyte solution at the same time. Turn on the power and set the parameters to a current density of 0.00075mm 2 / A, the voltage is 3V, and the energization time is 30min. After the energization is over, the zinc sheet will produce a microscopic appearance of micro-nano level unevenness. Then use an ultrasonic cleaner (parameter setting temperature 25° C.) and use 95% ethanol as a cleaning solvent to clean t...

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Abstract

The invention discloses a durable super-hydrophobic candle ash coating and a preparation method thereof. The surface of a metal substrate subjected to chemical etching pretreatment is coated with a mixture of a bonding layer. And the brushed substrate is put into a vacuum drying box for vacuum treatment, so that mixture molecules permeate into the substrate. A candle is ignited, after the candle is stably burnt, the substrate is clamped through tweezers, the substrate is placed in the middle of the flame of the candle, soot particles are deposited, and the super-hydrophobic coating with the durable performance is obtained. The coating is good in stability and durability, and has excellent self-cleaning performance and good corrosion resistance.

Description

technical field [0001] The invention relates to a hydrophobic coating and its preparation, in particular to a durable superhydrophobic candle soot coating and its preparation method. Background technique [0002] A superhydrophobic surface refers to a surface with a water contact angle exceeding 150° and a sliding angle below 10°. Because of its excellent hydrophobic properties, it has a large number of application practices in engineering fields such as fluid drag reduction, oil-water separation, and self-cleaning. Commonly used superhydrophobic coating preparation methods include photolithography, template method, chemical vapor deposition method, electrospinning method, etc., but these preparation methods have disadvantages such as complex process, high equipment requirements, and expensive materials. At present, the rough structure of most surfaces prepared for the purpose of superhydrophobicity is random and difficult to control. Contents of the invention [0003] P...

Claims

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Application Information

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IPC IPC(8): B05D7/14B05D7/24B05D3/10C25F3/02C23C26/00
CPCB05D7/14B05D7/24B05D3/102C25F3/02C23C26/00B05D2202/45B05D2202/30
Inventor 李凤芹刘勇田桂中周宏根
Owner JIANGSU UNIV OF SCI & TECH
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