Ultra-hydrophobic film of compound structure

Abstract

The invention discloses a super-hydrophobic film with a composite structure, which comprises a film matrix, an adhesive layer and a super-hydrophobic layer. The adhesive layer is adhered to the film matrix; and the super-hydrophobic layer consists of micro-scale powder particles and nano-scale powder particles which are arranged at intervals and embedded into the film matrix, have low surface energy or are modified by low surface energy substances, and micro-scale protrusions and nano-scale protrusions are formed on the surface of the adhesive layer. The super-hydrophobic film has the advantages of simple structure, easy preparation and lower cost; a water contact angle of the super-hydrophobic layer is between150 and 165 degrees, and a roll angle is less than 5 degrees; the super-hydrophobic film is provided with the adhesive layer and has no special requirement on a matrix material; and a super-hydrophobic structure can be arranged on the matrix with higher hardness; the super-hydrophobic film self has certain strength and hardness and excellent mechanical property, can be used in the occasions with higher mechanical requirements, and can also be used in the occasions needing water proofing, pollution prevention, mist resistance, snow cover resistance, ice coating resistance, oxidation prevention and the like; and the super-hydrophobic film adopts the film matrix, occupies little space, and is convenient and simple to use.

Description

technical field [0001] The invention relates to a super-hydrophobic structure, in particular to a super-hydrophobic film of a composite structure. Background technique [0002] Surface wettability is an important property that determines the application of materials. Many physical and chemical processes, such as adsorption, lubrication, adhesion, dispersion, and friction, are closely related to surface wettability. Research on superhydrophobic surfaces has attracted great attention due to their potential applications in self-cleaning surfaces, microfluidic systems, and biocompatibility. The so-called super-hydrophobic surface generally refers to the rolling angle of water droplets with a contact angle of greater than 150° and less than 10°, which is waterproof, anti-icing, anti-fog, anti-snow, anti-fouling, dust-proof and prevents transmission lines from being caused by water droplets. Corona noise and other features. Therefore, it has broad application prospects in the fi...

AI Technical Summary

Problems solved by technology

[0004] Most of the methods for preparing superhydrophobic surfaces in the prior art require the use of complex and expensive instruments and equipment and strict control of the preparation process. The cost of superhydrophobic structures is relatively high and cannot Realizing large-scale application of superhydrophobic surfaces

At the same time, the preparation cost is relatively high, and the mechanical strength of the prepared superhydrophobic surface is not high, which cannot meet the actual needs.

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