Wettability-controllable surface and preparation method and application thereof

Abstract

The invention provides a wettability-controllable surface as well as a preparation method and application thereof. The wettability-controllable surface is of a multi-layer nano hybrid shish-kebab structure formed by crystallizing an ethylene/functionalized cycloolefin block copolymer on the surface of carbon nano tubes, wherein polyethylene blocks are assembled and crystallized on the surfaces ofthe CNTs to form PE nanocrystals; the functionalized cycloolefin blocks are amorphous and are exposed on the outer layer; the film has good mechanical properties, the super-hydrophobic property and the self-cleaning property are realized under the natural condition; the wettability reversible transformation of the film surface can be realized through the control of low-voltage stimulation; the polymerization degree of the functionalized cycloolefin can be adjusted; the wetting state of the surface of the film can be reversibly converted between a non-adhesive super-hydrophobic state and a high-adhesive hydrophobic state, rapid conversion, repeated use and simple control are achieved, and the preparation method is simple, high in operability, short in reaction time, wide in application field, easy for industrial production and good in application prospect.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a surface with controllable wettability, a preparation method and application thereof. Background technique [0002] The wettability controllable smart surface can change its wetting behavior under the stimulation of external conditions (such as light, electric field, temperature and chemical, etc.). Such surfaces can not only be used for oil-water separation and self-cleaning coatings, but also have broad application prospects in the fields of microfluidic systems, adjustable focus liquid lenses, and new liquid crystal electronic displays. Therefore, under the trend of rapid development of smart materials, research on intelligently controlling the wettability of material surfaces through external stimuli has attracted much attention. [0003] In recent years, researchers have constructed a variety of superhydrophobic surfaces with special micro-n...

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Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a wettability controllable surface and its preparation method, which solves the complex and easy preparation process of the existing wettability controllable surface based on low electric field reversible transformation. Contamination of working droplets etc.

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