Preparation method of thermoplastic substrate ultra-hydrophobic film

A thermoplastic film, super-hydrophobic technology, which is applied to devices for coating liquids on surfaces, special surfaces, coatings, etc., can solve the problem of inability to achieve large-scale applications of super-hydrophobic surfaces, low mechanical strength of super-hydrophobic surfaces, and super-hydrophobic structures. The problem of high cost, to achieve the effect of easy promotion, excellent mechanical properties and low production cost

Inactive Publication Date: 2009-07-08
CHONGQING UNIV
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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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  • Preparation method of thermoplastic substrate ultra-hydrophobic film

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preparation example Construction

[0029] The preparation method of the superhydrophobic film of the thermoplastic substrate of the present embodiment, comprises the following steps:

[0030] a. Heat the thermoplastic film substrate to make it melt and soften. In this embodiment, the thermoplastic film substrate 1 is a polyethylene film;

[0031] b. Sprinkle the mixed powder of micron-sized powder 2 and nano-sized powder 3 with low surface energy evenly on the surface of polyethylene film. In this embodiment, the micron-sized powder and nano-sized powder are perfluoroethylene propylene micropowder , the particle size of the mixed powder of micron-sized powder and nano-sized powder is 60nm-100μm; cover the micron-sized powder and nano-sized powder with a flat plate 4 and apply a force perpendicular to the surface of the flat plate to make the micron-sized powder and nano-sized powder The powder particles are embedded in the surface of the melted and softened polyethylene film substrate and form micron-scale prot...

Embodiment 2

[0035] The preparation method of the superhydrophobic film of the thermoplastic substrate of the present embodiment, comprises the following steps:

[0036] a. Heat the thermoplastic film substrate 1 to make it melt and soften. In this embodiment, the thermoplastic film substrate is a polyvinyl chloride film, which has good strength and is suitable for being made into an adhesive tape form and is easy to use;

[0037] b. Sprinkle the mixed powder of micron-sized powder 2 and nano-sized powder 3 with low surface energy evenly on the surface of the polyvinyl chloride film. In this embodiment, the micron-sized powder and nano-sized powder are polytetrafluoroethylene The particle size of the mixed powder of micropowder, micron-sized powder and nano-sized powder is 400nm-30μm; cover the micron-sized powder and nano-sized powder with a plate 4 and apply a force perpendicular to the surface of the plate to make the micron-sized powder and nano-sized powder Nano-scale powder particles...

Embodiment 3

[0041] The preparation method of the superhydrophobic film of the thermoplastic substrate of the present embodiment, comprises the following steps:

[0042] a. Heat the thermoplastic film substrate 1 to melt and soften it. In this embodiment, the thermoplastic film substrate is a polypropylene film;

[0043] b. Sprinkle the mixed powder of micron-sized powder 2 and nano-sized powder 3 with low surface energy evenly on the surface of the polypropylene film. In this embodiment, the micron-sized powder and nano-sized powder are perfluoroethylene propylene micropowder Mixed with polytetrafluoroethylene micropowder, micron-sized powder and nano-sized powder, the particle size of the mixed powder is 400nm-30μm; cover the micron-sized powder and nano-sized powder with a flat plate 4 and apply a force perpendicular to the surface of the flat plate, Embed micron-scale powder and nano-scale powder into the surface of melted and softened polyvinyl chloride film to form micron-scale protrus...

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Abstract

The invention discloses a preparation method for a thermoplastic matrix super-hydrophobic membrane. A pressure sintering method is adopted to press mixed powder of micro-sized powder particles and nanometer-sized powder particles on a super-hydrophobic layer into surface of the thermoplastic membrane matrix. The operation is simple and the super-hydrophobic layer consists of the micro-sized powder particles and nanometer-sized powder particles which are arranged alternatively and are embedded in the membrane matrix to form micro-sized convex and nanometer-sized convex. The manufactured super-hydrophobic surface has relatively high intensity and relatively low manufacturing cost; and the super-hydrophobic structure can be manufactured and used on a large scale. The super-hydrophobic layer has a water contact angle of 150-165 degrees and a rolling angle less than 5 degrees. The super-hydrophobic layer has stable performance, low cost and excellent mechanical property and is applicable to places requiring water proofing, antifouling, fog proofing, snow coating proofing, ice coating proofing and oxidation proofing. The thermoplastic membrane matrix is used, therefore, the super-hydrophobic membrane can be flexibly used. The super-hydrophobic membrane can be manufactured into a tape structure to be adhered on surfaces of other matrices. The super-hydrophobic membrane is convenient and simple in use, easy to popularize and is a super-hydrophobic structure which can be manufactured and used on a large scale.

Description

technical field [0001] The invention relates to a preparation method of a superhydrophobic structure, in particular to a preparation method of a thermoplastic matrix superhydrophobic film. 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...

Claims

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Application Information

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IPC IPC(8): B05D7/04B05D5/00
Inventor 李剑舒立春胡建林赵玉顺杨庆司马文霞张志劲胡琴章华中白欢
Owner CHONGQING UNIV
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