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A functional structure for underwater oil transportation and its preparation method and application

An underwater oily and functional technology, applied in chemical instruments and methods, laboratory containers, laboratory utensils, etc., can solve the problems of biological sample destruction, high price, energy waste, etc.

Active Publication Date: 2022-04-19
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the existing pipette is used for transfer, it is not only expensive, but also requires professional operators, and it is also easy to cause damage to biological samples
[0003] Except for pipettes, most of the existing liquid transfer technologies require the intervention of external energy, resulting in unnecessary energy waste
Xing Li et al. (Bioinspired Topological Surface for Directional Oil Lubrication, DOI: 10.1021 / acsami.9b20345) disclosed a functional surface that can achieve pumpless transport, but there is a problem of short transport distance

Method used

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  • A functional structure for underwater oil transportation and its preparation method and application
  • A functional structure for underwater oil transportation and its preparation method and application
  • A functional structure for underwater oil transportation and its preparation method and application

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preparation example Construction

[0036] The present invention provides a preparation method of the underwater oil transportation functional structure described in the above technical solution, comprising the following steps:

[0037] On the surface of the substrate, an underwater super-oleophilic wedge-shaped region and an underwater super-oleophobic region arranged on the periphery of the underwater super-oleophilic wedge-shaped region are respectively prepared, and an underwater oil transport functional structure is formed on the surface of the substrate; wherein, preparing The method for the underwater super-oleophilic wedge-shaped region includes a laser liquid phase processing method, and the method for preparing the underwater super-oleophobic region includes a laser direct writing method.

[0038] The present invention preferably prepares underwater superoleophilic wedge-shaped regions in some regions of the substrate surface first, and then prepares underwater superoleophobic regions in other regions o...

Embodiment 1

[0049] according to Figure 5 The flow chart shown prepares a functional construct and includes the following steps:

[0050] Fluorosilane F1060 (CFH 2 CH 2 -Si(OC 2 h 5 ) 3 ) is a solute, toluene is a solvent, and the preparation mass fraction is a 1.5% fluorinated solution;

[0051] Take the cemented carbide YG8 plate as the substrate, immerse the substrate in the fluorinated solution, and make the fluorinated solution cover the upper surface of the substrate by 1mm, and use the laser liquid phase processing method to scan part of the surface of the substrate to obtain Underwater super-lipophilic wedge-shaped area, and then the obtained substrate is taken out from the fluorinated solution, dried with high-purity nitrogen, and then heated in a 150°C holding furnace for 45 minutes to fully remove the toluene on the surface of the substrate, and then naturally lowered to room temperature (25°C) to obtain a substrate with an underwater super-oleophilic wedge-shaped region;...

Embodiment 2

[0056] according to Figure 5 The flow chart shown prepares a functional construct and includes the following steps:

[0057] Fluorosilane F1060 (CFH 2 CH 2 -Si(OC 2 h 5 ) 3 ) is a solute and toluene is a solvent, and the preparation mass fraction is a 0.8% fluorinated solution;

[0058] Taking copper H62 as the substrate, immersing the substrate in the fluorinated solution, and making the fluorinated solution submerge the upper surface of the substrate by 1mm, scanning and processing the surface of the substrate part by laser liquid phase processing method to obtain underwater superphilicity Oil the wedge-shaped area, then take the obtained substrate out of the fluorinated liquid, blow it dry with high-purity nitrogen, and heat it in a holding furnace at 150°C for 60 minutes to fully remove the toluene on the surface of the substrate, and then cool it down to room temperature (25°C) , to obtain a substrate with an underwater super-oleophilic wedge-shaped region; wherein...

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PUM

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Abstract

The invention provides a functional structure for underwater oil transportation, a preparation method and application thereof, and belongs to the technical field of mechanical surface engineering. The underwater oil transportation functional structure provided by the present invention includes an underwater super-oleophilic wedge-shaped region and an underwater super-oleophobic region arranged on the periphery of the underwater super-oleophilic wedge-shaped region; wherein, the underwater super-oleophilic wedge-shaped region The area is formed by a wedge-shaped microstructure distributed in an array, and the wedge-shaped microstructure includes a plurality of wedge-shaped grooves connected in series. In two adjacent wedge-shaped grooves connected in series, along the direction of underwater oil transportation, the wide end of one wedge-shaped groove is connected to the The narrow end of another wedge-shaped groove is connected by a transitional arc; and the bottom of each wedge-shaped groove is provided with array microchannels arranged in parallel. The functional structure provided by the invention can realize directional and long-distance transportation of underwater oil, especially for heavy oil, which still has a good directional transportation effect, and is of great significance for oil-water separation and underwater oil droplet manipulation.

Description

technical field [0001] The invention relates to the technical field of mechanical surface engineering, in particular to a functional structure for underwater oil transportation and its preparation method and application. Background technique [0002] In medical treatment, it is necessary to transport biological samples such as some macromolecular proteins (essentially high-viscosity oil) to a specific location for a chemical reaction in a water environment, and then transport the reacted solution to another specific location to achieve Point of care (POC) detection of biological samples. If the existing pipette is used for transfer, it not only has the problem of being expensive, but also requires professional operators, and it is also easy to cause damage to the biological sample. [0003] Except for pipettes, most of the existing liquid transfer technologies require the intervention of external energy, resulting in unnecessary energy waste. Xing Li et al. (Bioinspired To...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01L3/00
CPCB01L3/5027B01L3/502707B01L2200/10B01L2300/0861B01L2300/166
Inventor 郝秀清孙鹏程徐文豪赵香港赵国龙赵威李亮何宁
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS