Water-based transparent super-amphiphobic nano-paint and preparation method and application thereof

A nano-coating, super-amphiphobic technology, applied in coatings, devices for coating liquids on surfaces, special surfaces, etc., can solve the problems of complex water-based super-amphiphobic coating processes, high costs, and harsh experimental conditions. Low cost, low risk, good dispersion effect

Active Publication Date: 2016-02-24
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many methods for preparing water-based super-amphiphobic coatings are very complex, requiring fine equipment, harsh experimental conditions, and high costs. Difficulties and Hotspots

Method used

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  • Water-based transparent super-amphiphobic nano-paint and preparation method and application thereof
  • Water-based transparent super-amphiphobic nano-paint and preparation method and application thereof
  • Water-based transparent super-amphiphobic nano-paint and preparation method and application thereof

Examples

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preparation example Construction

[0039] Preparation of water-based nano-coating: 40kHz frequency ultrasonic dispersion, and under the condition of 500-1000rpm mechanical stirring, slowly add deionized water into the high-solid-content nano-coating concentrate, the amount of water added is 1-90vol.% of the coating, and then immediately The surfactant is added in an amount of 0.01-1 vol.% of the water-based paint, and after 30-60 minutes, the water-based nano paint for preparing a transparent superamphiphobic surface can be obtained. The surfactant refers to sodium lauryl sulfate, Span80, Tween20, TritonX-100 or Surfynol61.

[0040] Spraying technology: before spraying, wipe the substrate with a clean cotton cloth, brush or dust-free paper, or ultrasonically clean it in ethanol for 5-15 minutes, take it out and dry it before using it. The substrate is glass, ceramic tile, concrete, metal, textile, plastic, wood, composite material, and the like. Choose a spray gun with a nozzle diameter of 0.5-2mm to spray, us...

Embodiment 1

[0043] At room temperature of 25°C, the hydrophilic silica nanoparticles were added to ethanol (EtOH), and after ultrasonic dispersion at 40kHz frequency for 30min, under the condition of 800rpm magnetic stirring, ethyl orthosilicate was added at a volume ratio of 20:1 (TEOS), followed by dropwise addition of ammonia (NH 4 OH) the mixed solution of alkalized ethanol and deionized water, the dropping speed is 0.2mL / s, after reacting for 12h, drop in the silane coupling agent, the molar ratio is KH570:TEOS=2:1, the dropping speed is 0.5mL / s After continuing the magnetic stirring for 1 hour, slowly add fluorosilane (FAS) dropwise, the molar ratio FAS:TEOS=2:1, the dropping speed is 0.5mL / s, and after continuing the magnetic stirring for 24 hours, the oily nano-coating with a concentration of 1 mg / mL is obtained. According to the volume ratio of 1:1, add fluorocarbon resin solution to the oily nano coating to obtain the oily organic-inorganic hybrid coating, then put the oily nano...

Embodiment 2

[0046] Preparation of oil-based nano-coatings: Add hydrophilic silica nanoparticles to ethanol (EtOH) at room temperature at 20°C, disperse with 40kHz ultrasonic waves for 30 minutes, and add positive Ethyl silicate (TEOS), then, add dropwise the mixed solution of ethanol and deionized water acidified with hydrochloric acid (HCl), the drop rate is 0.3mL / s, after reacting for 24h, drop into the silane coupling agent, the molar ratio is KH570: TEOS = 3:1, drop rate 0.5mL / s, continue magnetic stirring for 1h, slowly add fluorosilane (FAS), molar ratio FAS: TEOS = 3:1, drop rate 0.3mL / s, continue magnetic stirring After 24 hours, a 6 mg / mL oily nano-coating was obtained.

[0047] Preparation of organic-inorganic hybrid coatings: First, add fluorocarbon resin solution to oily nano-coatings at a volume ratio of 1:1 to obtain oily organic-inorganic hybrid coatings, then put the oily nano-coatings into a rotary evaporator at 90°C Water bath, 200rmp condition, after evaporating for 45...

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Abstract

The invention relates to water-based transparent super-amphiphobic nano-paint and a preparation method and application thereof. Under the room temperature condition, hydrophilic silica nanoparticles and tetraethoxysilane or carbon tetrachloride serve as raw materials to synthesize oily nanoparticles with the concentration of 1-10 mg/mL; the oily nanoparticles and fluorocarbon resin are compounded according to the volume ratio of 1:1, a rotary evaporator is utilized for rotary evaporation for 30-60 min under the condition of a water bath at the temperature of 60-90 DEG C, and high-solid-content oily nano-paint concentrated liquor with the concentration of 20-40 mg/mL is obtained; water and surfactant are added, and the water-based transparent nano-paint with the super-amphiphobic surface is obtained. The prepared paint is soluble in water, the preparation process is simple, and the paint is suitable for large-area spraying, is high in adaptability to a base material and transparency, good in protective performance, environmentally friendly and capable of improving the working environment, and saves energy.

Description

technical field [0001] The invention relates to a simple water-based transparent super-amphiphobic nano coating and a coating preparation technology thereof. Background technique [0002] Water-based transparent nano-coating is a new type of energy-saving and environmentally friendly material. It can not only maintain a high visible light transmittance of the substrate, but also use water as a dispersant to reduce or avoid the use of toxic and volatile solvents, which greatly improves construction operations. condition. Because of its unique physical and chemical properties and excellent performance, it has become the new favorite in the current scientific research and commercial fields. [0003] The water-based transparent super-amphiphobic nano-coating with unique wettability has great potential application value in the fields of self-cleaning, waterproof and oil-proof, anti-fog and anti-icing, anti-fouling and anti-corrosion, drag reduction and wear resistance, etc., and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/08C09D127/12C09D7/12C08G77/24B05D5/08
Inventor 张友法朱海燕余新泉
Owner SOUTHEAST UNIV
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