Ultra-hydrophobic film of compound structure

A composite structure, super-hydrophobic technology, applied in the direction of synthetic resin layered products, chemical instruments and methods, layered products, etc. Problems such as high structural cost, to achieve the effect of easy promotion, simple structure and small space occupation

Active Publication Date: 2009-07-08
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 h

Method used

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  • Ultra-hydrophobic film of compound structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The superhydrophobic membrane of the composite structure of the present embodiment comprises a membrane substrate 1, an adhesive layer 4 and a superhydrophobic layer, the adhesive layer 4 is bonded to the membrane substrate 1, and the superhydrophobic layer is composed of micron-sized membranes arranged alternately and embedded in the adhesive layer. Composed of powder 2 and nano-scale powder 3, micron-scale powder 2 and nano-scale powder 3 form micron-scale protrusions and nano-scale protrusions on the surface of the bonding layer; in this embodiment, the material of the bonding layer is vinyl fluoride -Vinyl ether polymer, with good viscosity and strong adaptability, can be applied to various surfaces; micron-sized powder particles 2 and nano-sized powder particles 3 have low surface energy; in this embodiment, micron-sized powder particles with low surface energy Powder 2 and nanoscale powder 3 are polytetrafluoroethylene micropowders;

[0023] The particle size of t...

Embodiment 2

[0026] The superhydrophobic membrane of the composite structure of the present embodiment comprises a membrane substrate 1, an adhesive layer 4 and a superhydrophobic layer, the adhesive layer 4 is bonded to the membrane substrate 1, and the superhydrophobic layer is composed of micron-sized membranes arranged alternately and embedded in the adhesive layer. Composed of powder 2 and nanoscale powder 3, micron-scale powder 2 and nanoscale powder 3 form micron-scale protrusions and nano-scale protrusions on the surface of the bonding layer; in this embodiment, the material of the bonding layer is fluorine-containing Acrylic ester has stable physical properties and strong adaptability, and can be applied to various surfaces; micron-sized particles 2 and nano-sized particles 3 are modified with low surface energy substances. The micron-sized powder 2 and nano-sized powder 3 are silicon dioxide, of course, they can also be one or more mixtures of titanium dioxide, calcium carbonate a...

Embodiment 3

[0030] The superhydrophobic membrane of the composite structure of the present embodiment comprises a membrane substrate 1, an adhesive layer 4 and a superhydrophobic layer, the adhesive layer 4 is bonded to the membrane substrate 1, and the superhydrophobic layer is composed of micron-sized membranes arranged alternately and embedded in the adhesive layer. Composed of powder 2 and nano-scale powder 3, micron-scale powder 2 and nano-scale powder 3 form micron-scale protrusions and nano-scale protrusions on the surface of the bonding layer; in this embodiment, the material of the bonding layer is polyurethane resin , stable physical properties, high viscosity, strong adaptability, applicable to various surfaces; micron-sized powder 2 and nano-sized powder 3 have low surface energy; in this embodiment, micron-sized powder 2 with low surface energy and nanoscale powder 3 is perfluoroethylene propylene micropowder;

[0031] The particle size of the mixed powder of micron-scale pow...

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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...

Claims

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Application Information

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IPC IPC(8): B32B5/16B32B27/04B32B27/14B32B33/00
Inventor 李剑赵玉顺舒立春胡琴蒋兴良张志劲胡建林杨庆杨洋章华中
Owner CHONGQING UNIV
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