Superamphiphilic surface with high transmittance and method for preparing the same

By subjecting the substrate material to strong cleaning, strong acid and alkali treatment, and concentrated nitric acid passivation, the problems of complex process and low light transmittance in preparing super-amphiphilic surfaces have been solved, achieving super-amphiphilic surfaces with high light transmittance and self-cleaning properties, suitable for multiple application fields.

CN117510087BActive Publication Date: 2026-05-01YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE (HUZHOU)
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Patent Information

Application Number
CN202311552085.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-11-20
Publication Date
2026-05-01
Estimated Expiration
2043-11-20

AI Technical Summary

Technical Problem

Existing technologies for preparing superamphiphilic surfaces are cumbersome, require specific equipment and have high requirements for substrate materials. Polydopamine coatings reduce light transmittance and have poor long-term stability and resistance to environmental corrosion.

Method used

By subjecting the substrate material to intense cleaning, strong acid and alkali treatment, and concentrated nitric acid passivation, a super-amphiphilic surface is formed, maintaining high light transmittance and stability.

Benefits of technology

It enables the simple fabrication of high-transmittance, super-amphiphilic surfaces on a variety of substrate materials, which have self-cleaning properties and are suitable for multiple industrial and daily life scenarios, improving the material's resistance to environmental erosion and service life.

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Abstract

The application belongs to the technical field of super-hydrophilic / super-oleophilic coating materials, and discloses a super-amphiphilic surface with high light transmittance and a preparation method thereof, which comprises the following steps: pretreating a surface of a base material by strong cleaning; immersing the pretreated surface of the base material in prepared strong acid and strong alkali solutions respectively to perform strong acid and strong alkali treatment, and cleaning after immersion for a proper time; and immersing the surface of the base material in concentrated nitric acid at room temperature to perform passivation treatment after the super-amphiphilic performance of the surface of the base material is completed. The application realizes the super-hydrophilic and super-oleophilic performance of the surface of the base material through a simple technological process, and the water and oil can be completely spread on the surface and have self-cleaning performance. In particular, when the glass material is used as the surface of the base material, the high light transmittance of the glass surface can be effectively realized to reach more than 95%.
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