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Preparation method and application of laser-induced graphene without pinning effect

A laser-induced and pinning effect technology, which is applied in the preparation of test samples, material excitation analysis, Raman scattering, etc., can solve problems such as difficulty in implementation and complex process, and achieve good application prospects, simple preparation methods, and low cost. Effect

Active Publication Date: 2022-04-12
SHANDONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

There are also researchers who have prepared laser-induced graphene based on bionic surfaces, but the biggest problem with these methods is that the process is complex. In addition, special graphene surface structures need to be designed to achieve super-hydrophobicity, which is difficult to achieve in industry.

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  • Preparation method and application of laser-induced graphene without pinning effect
  • Preparation method and application of laser-induced graphene without pinning effect
  • Preparation method and application of laser-induced graphene without pinning effect

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preparation example Construction

[0046]The invention provides a method for preparing laser-induced graphene without pinning effect, such as figure 1 shown, including the following steps:

[0047] (1) The polyimide film was ultrasonically cleaned with deionized water for 20 minutes;

[0048] (2) Design the graphene pattern that needs to be processed on the computer, and import the pattern into a laser engraving machine; the laser engraving machine is a semiconductor laser engraving machine with a wavelength of 460nm;

[0049] (3) the laser power of setting laser engraving machine is 10W, and engraving speed is 100mm / s, and polyimide film is carried out laser treatment, obtains LIG, and this graphene surface has fibrous graphene villi microstructure, as figure 2 as shown in (a) and (c);

[0050] (4) Add ethanol dropwise to the surface of graphene or soak graphene in ethanol for 5 minutes, and dry it at room temperature (ethanol evaporates cleanly) to obtain EtoH-LIG, and most of the fibrous graphene on the s...

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Abstract

The invention relates to the technical field of super-hydrophobic materials, and discloses a preparation method and application of pinning-effect-free laser-induced graphene, and the preparation method comprises the following steps: ultrasonically cleaning a polyimide film with deionized water; designing a graphene pattern needing to be processed, and guiding the pattern into a laser engraving machine; setting the laser power and the engraving speed of a laser engraving machine, and carrying out laser treatment on the polyimide film to obtain laser-induced graphene with a pinning effect; the method comprises the following steps: dropwise adding an organic solvent on the surface of graphene or soaking graphene in the organic solvent, and airing at room temperature to obtain the laser-induced graphene without pinning effect. According to the method disclosed by the invention, the laser-induced graphene without the pinning effect can be prepared, the process cost is low, and the method is efficient and stable, and the prepared laser-induced graphene without the pinning effect has super-hydrophobicity and has a good application prospect in the fields of analyte concentration detection, oil-water separation, icing prevention and the like.

Description

technical field [0001] The invention relates to the technical field of superhydrophobic materials, in particular to a preparation method and application of laser-induced graphene without pinning effect. Background technique [0002] According to the wettability of solid surfaces to water, they can be classified as superhydrophilic, hydrophilic, hydrophobic or superhydrophobic surfaces. Superhydrophobic surfaces have the ability to stay dry, self-clean and avoid biofouling. Therefore, superhydrophobic surfaces have broad application prospects, such as seawater desalination and anti-biofouling, energy devices, biomedical devices, medicine and heat transfer, etc. Superhydrophobic surfaces usually have materials with low surface chemical energy and micro-nano-scale surface roughness, which minimizes the contact angle between liquid and solid surfaces. Superhydrophobic surfaces are generally divided into two categories: low-adhesion water surfaces and high-adhesion water surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/34G01N21/65
CPCY02A20/204
Inventor 韩琳张宇韩应宽韩云蕊
Owner SHANDONG UNIV
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