Super-hydrophobic aluminum alloy filter screen as well as preparation method and application thereof

A super-hydrophobic, aluminum alloy technology, applied in comprehensive cross-fields, can solve the problems of poor oil-water separation effect, complex modification process, and difficulty in special micro-nano structure, and achieve high oil-water separation efficiency and simple process.

Active Publication Date: 2020-06-23
GUANGZHOU UNIVERSITY
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Problems solved by technology

However, the femtosecond laser ablates metal in the air, and the interference effect between the surface plasmon wave and the incident laser will cause a sub-wavelength periodic stripe structure perpendicular to the laser polarization direction on the metal surface, which makes it necessary to obtain clean special micro-nano structure becomes difficult
At the same time, the metal

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  • Super-hydrophobic aluminum alloy filter screen as well as preparation method and application thereof
  • Super-hydrophobic aluminum alloy filter screen as well as preparation method and application thereof
  • Super-hydrophobic aluminum alloy filter screen as well as preparation method and application thereof

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[0033] Example

[0034] This embodiment is an embodiment of the preparation method of the superhydrophobic aluminum alloy filter screen of the present invention. The preparation method includes the following steps:

[0035] (1) Use acetone, ethanol and water to ultrasonically clean the aluminum alloy for 3-5 minutes, and then use a focused femtosecond laser to carve parallel slits on the back of the aluminum alloy in the air to form a slit array (specifically, figure 2 As shown in (a)), the slit width is maintained at 35μm, the slit spacing is 200-350μm, the thickness of the aluminum alloy is 100μm, and the used amplifier laser (manufacturer: Coherent, USA, model: Legend) has an output center wavelength of 800nm , The pulse width is 100fs, the repetition frequency is 1kHz, the femtosecond laser is focused by a lens with a focal length of 15cm, and the focused spot size is about 40μm;

[0036] (2) Submerge the aluminum alloy treated in step (1) in a sucrose solution, and then use a f...

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Abstract

The invention provides a super-hydrophobic aluminum alloy filter screen as well as a preparation method and an application thereof. The method comprises the steps that firstly, parallel seams are carved in the back face of an aluminum alloy in air through focused femtosecond lasers to form a seam array; under the assistance of a sucrose solution, a density-controllable nano mastoid structure is induced on the front surface of the aluminum alloy through focused femtosecond laser; and then polydimethylsiloxane is adopted for treating the front face of the aluminum alloy to enable the aluminum alloy to be super-hydrophobic, the super-hydrophobic aluminum alloy filter screen is prepared, the problem that the oil-water separation effect becomes poor due to the fact that the surface of the aluminum alloy is prone to oxidation is solved, and the purposes of surface super-hydrophobicity, underwater super-lipophilicity modification and efficient oil-water separation are achieved.

Description

technical field [0001] The invention belongs to the comprehensive cross field of integration of light, machine, computer and materials, and relates to a new wettability-bionic micro-nano structure material and its preparation method and application, in particular to a super-hydrophobic aluminum alloy filter screen and its Preparation method and application. Background technique [0002] Materials with nano-structures on the surface are widely used in production and life. For example, silicon with nano-cone structures on the surface can be used as antibacterial materials in medicine, and metals with nano-protrusion structures on the surface can be used for water mist collection, frost and frost protection Oil-water separation, etc. [0003] The most famous superhydrophobic surface in nature is the surface of lotus leaves and rose petals. There are a large number of micron-scale papillae structures randomly distributed on the surface of rose petals, and the micro-papillae are...

Claims

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Application Information

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IPC IPC(8): B01D17/022B23K26/364B05D7/14B05D5/00B05D7/24
CPCB01D17/0202B23K26/364B05D7/14B05D5/00B05D7/24B05D2202/25B05D2518/12
Inventor 张成云马泽霖陆明慧王文君洪志豪
Owner GUANGZHOU UNIVERSITY
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