Rough substrate for smooth porous surface infused with lubricating fluid, smooth porous surface infused with lubricating fluid, and preparation methods of rough substrate and smooth porous surface

A porous surface and lubricating fluid technology, applied in coatings, epoxy resin coatings, etc., can solve the problems of unstable mechanical properties, poor adhesion between low surface energy polymers and substrates, etc., and achieve fast and convenient coating preparation The effect of large-area preparation and shortening the preparation cycle

Active Publication Date: 2021-06-04
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the present application provides a rough substrate for filling a lubricating fluid with a smooth porous surface, a smooth porous surface for filling a lubricating fluid and a preparation method thereof, which can effectively solve the poor adhesion between the low surface energy polymer and the substrate of SLIPS, Technical defect of unstable mechanical properties

Method used

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  • Rough substrate for smooth porous surface infused with lubricating fluid, smooth porous surface infused with lubricating fluid, and preparation methods of rough substrate and smooth porous surface
  • Rough substrate for smooth porous surface infused with lubricating fluid, smooth porous surface infused with lubricating fluid, and preparation methods of rough substrate and smooth porous surface
  • Rough substrate for smooth porous surface infused with lubricating fluid, smooth porous surface infused with lubricating fluid, and preparation methods of rough substrate and smooth porous surface

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preparation example Construction

[0053] The method for preparing a smooth porous surface filled with lubricating fluid provided in the embodiments of the present application includes:

[0054] 1. Please refer to figure 1 , Mix the epoxy resin monomer and diethylenetriamine evenly in a certain proportion, centrifugally degas to obtain a uniform mixture, apply the mixture evenly on the substrate, place the substrate in a high-humidity environment to cure and obtain a lubricant for perfusion The rough substrate of the smooth porous surface of the liquid (hereinafter referred to as the rough porous substrate); figure 1 The first diagram on the left shows that the epoxy resin monomer and diethylenetriamine are mixed uniformly in a certain proportion. figure 1 The central schematic is for spreading the mixture evenly on the substrate, figure 1 The schematic diagram on the right is a schematic diagram of placing the substrate in a high-humidity environment.

[0055] 2. Soak the prepared rough porous substrate in ...

Embodiment 1

[0060] Add 10g of E44 epoxy resin and 1g of diethylenetriamine into the beaker at the same time, stir evenly with a glass rod, and then spin it with a centrifuge at 6000rpm for 6min to degas it to obtain a mixture.

[0061] The resulting mixture was spin-coated on a glass slide with a spin coater at 6000 rpm for 1 min, and placed in an environment with a relative humidity of 90% for natural curing to obtain a rough porous substrate.

[0062] Soak the prepared rough porous substrate into 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl trimethyl Oxysilane ethanol solution (3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyltrimethoxysilane with Hydrophobic modification was carried out in ethanol (volume ratio: 1:99) for 30 minutes, and a hydrophobic rough porous substrate was obtained after drying. The perfluoropolyether lubricating liquid was poured into the prepared hydrophobic rough porous substrate to obtain a smooth porous substrate filled with lubricating l...

Embodiment 2

[0064] Add 10g of E44 epoxy resin and 1g of diethylenetriamine into the beaker at the same time, stir evenly with a glass rod, and then spin it with a centrifuge at 6000rpm for 6min to degas it to obtain a mixture.

[0065] The obtained mixture was spin-coated on the metal substrate with a spin coater at 3000 rpm for 30 s, and placed in an environment with a relative humidity of 90% for natural curing to obtain a rough porous substrate.

[0066] Soak the prepared rough porous substrate into 3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyl trimethyl Oxysilane ethanol solution (3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodecyltrimethoxysilane with Hydrophobic modification was carried out in ethanol (volume ratio: 1:99) for 30 minutes, and a hydrophobic rough porous substrate was obtained after drying. The perfluoropolyether lubricating liquid was poured into the prepared hydrophobic rough porous substrate to obtain a smooth porous substrate filled with lubricati...

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Abstract

The invention belongs to the technical field of bionic super-smooth coating layers, and particularly relates to a rough substrate for a smooth porous surface infused with lubricating liquid, the smooth porous surface infused with the lubricating liquid and preparation methods of the rough substrate and the smooth porous surface. The invention provides the preparation method of the rough substrate with the smooth porous surface infused with the lubricating liquid, wherein the preparation method comprises the steps: mixing epoxy resin with diethylenetriamine to prepare a mixture; coating a base material with the mixture to prepare a composite base material; and placing the composite base material in an environment with the relative humidity of 60%-95%, and curing to obtain the rough substrate for the smooth porous surface infused with the lubricating liquid. The invention provides the rough substrate for the smooth porous surface infused with the lubricating liquid, the smooth porous surface infused with the lubricating liquid and the preparation methods of the rough substrate and the smooth porous surface, and can effectively overcome the technical defects that a low-surface-energy polymer of SLIPS is poor in adhesiveness with the substrate and unstable in mechanical property.

Description

technical field [0001] The application belongs to the technical field of biomimetic super-slip coating, and in particular relates to a rough substrate for a smooth porous surface filled with lubricating fluid, a smooth porous surface filled with lubricating fluid and a preparation method thereof. Background technique [0002] Bionic super-slip coatings have been a research hotspot in the past 10 years. They have broad application prospects in the fields of self-cleaning coatings, marine anti-corrosion and anti-fouling, drag reduction, anti-icing, enhanced heat transfer, biomedical and microfluidics. Slippery Liquid Infused Porous Surfaces (SLIPS) is a biomimetic super-slippery coating similar to the smooth surface of Nepenthes. [0003] The smooth porous surface SLIPS perfused with lubricating fluid can be prepared by the "bottom to up" method, that is, the rough surface is formed by the assembly of smaller structural units, and then subsequent processing is carried out to p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/02C08G59/50
CPCC09D163/00C08G59/502
Inventor 李伟华赵书瑞杨皓程李玉堂
Owner SUN YAT SEN UNIV
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