Preparation method of stable superhydrophobic hot liquid coating

A super heat-repellent and stable technology, used in coatings, polyester coatings, epoxy coatings, etc.

Active Publication Date: 2016-03-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a stable superthermophobic liquid coating in order to solve the problems existing in the performance and technical aspects of the existing superamphiphobic coating

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 0.5g of SiO with a diameter of 100nm 2 Add nanoparticles into a 100mL Erlenmeyer flask; then measure 46mL acetone, 2mL ammonia water and 2mL deionized water, stir magnetically for 10min, and ultrasonically for 30min; measure 0.05mL tetraethoxysilane and 0.6mL perfluorodecyltri Add ethoxysilane into the Erlenmeyer flask, stir and react at 60°C for 24h to obtain a uniform organosilane polymer / SiO 2 Complex suspension; measure 4 mL organosilane polymer / SiO 2 Composite suspension, add 2.5% epoxy resin and 0.25% ethylenediamine curing agent by suspension volume, stir for 5 minutes, control spraying pressure 0.2MPa, spraying distance at 20cm, substrate heating temperature 70°C, spray on the glass surface, and then Remove the glass piece and treat it at 120°C for 2h.

[0031] Measure the contact angle and sliding angle with 5 μL water and oil droplets at 70°C: water contact angle=162°, sliding angle=2°; n-hexadecane contact angle=156°, sliding angle=18°.

Embodiment 2

[0033] Weigh 4g of multi-walled carbon nanotubes with a diameter of 10-20nm and add them into a 1000mL conical flask; then measure 400mL of methyl ethyl ketone, 10mL of hydrochloric acid and 90mL of deionized water, mechanically stir for 10min, and sonicate for 30min; measure 2.5mL of formazan Aryltriethoxysilane and 6.5mL perfluorooctyltriethoxysilane were added to the Erlenmeyer flask, stirred and reacted at room temperature for 24 hours to obtain a uniform organosilane polymer / multi-walled carbon nanotube composite suspension; Measure 40mL organosilane polymer / multi-walled carbon nanotube composite, add 2% polyurethane resin in suspension volume, stir for 5min, control the spraying pressure to 0.1MPa, spraying distance at 10cm, and substrate heating temperature at 70°C to spray on the stainless steel surface, Then remove the stainless steel sheet and treat it at 100°C for 4h.

[0034] Measure the contact angle and sliding angle with 5 μL water and oil droplets at 70°C: wate...

Embodiment 3

[0036] Weigh 1g of attapulgite and add it into a 100mL Erlenmeyer flask; then measure 30mL of acetone, 8mL of ammonia water and 6mL of deionized water, stir magnetically for 10min, and sonicate for 30min; measure 0.2mL of perfluorodecyltrimethoxysilane and Add 0.1mL ethyltriethoxysilane into the Erlenmeyer flask, stir and react at 50°C for 2h to obtain a uniform organosilane polymer / attapulgite composite suspension; measure 4mL organosilane polymer / attapulgite Stone composite solution, add fluorocarbon resin with 1% of the suspension volume, stir for 5 minutes, control the spraying pressure to 0.2MPa, the spraying distance to 5cm, and the substrate heating temperature to spray on the surface of the fabric at 70°C, then remove the fabric and treat it at 70°C for 2 hours .

[0037] Measure the contact angle and sliding angle with 5 μL water and oil droplets at 70°C: water contact angle=161°, sliding angle=3°; n-hexadecane contact angle=153°, sliding angle=18°.

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Abstract

The invention discloses a preparation method of a stable superhydrophobic hot liquid coating, and belongs to the technical field of surface coating preparation. According to the preparation method, in an acetone-water mixed system, in the catalytic effect of acid or base, organic silane and nano particles carry out hydrolysis and condensation reactions to obtain organic silane polymer/nano particle compound suspension; then organic resin adhesive is added into the compound suspension, the mixture is evenly mixed and evenly sprayed on the surface of a substrate material, and finally a thermal curing treatment is performed to obtain the stable superhydrophobic hot liquid coating. The prepared coating has an excellent superhydrophobic hot liquid performance, has the advantages of good mechanical stability, chemical stability, and environmental stability, and thus has a good application prospect.

Description

technical field [0001] The invention relates to the preparation of a superamphiphobic surface, in particular to a method for preparing a stable superthermal liquid coating, and belongs to the technical field of surface coating preparation. Background technique [0002] The super-amphiphobic surface is one of the special wettability surfaces. On this surface, the contact angle between water droplets and low surface energy organic liquid droplets is greater than 150°, and the rolling angle is less than 10°. It has broad application prospects in many fields such as fluid drag reduction. At present, the preparation of superamphiphobic surfaces is mainly achieved through technical means and methods such as photolithography, electrospinning, self-assembly, and electrochemical deposition. In the patent CN102677141B, titanium or titanium alloy is used as the base material, and the micro-nano structure is obtained by electrochemical etching technology, and then the super-oleophobic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D175/04C09D127/12C09D167/00C09D133/00C09D7/12
CPCC08K2201/011C09D7/61C09D127/12C09D133/00C09D163/00C09D167/00C09D175/04C08L83/04C08K3/36C08K7/24C08K3/34C08K2003/2293
Inventor 张俊平李步成
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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