Super-hydrophobic fiber having needle-shaped NANO structure on its surface, method for fabricating the same and fiber product comprising the same

Abstract

A super-hydrophobic fiber of the present disclosure includes: a nano-needle fiber having a surface including needle-shaped nano structures; and a coating layer disposed on the surface including the nano structures, and containing a hydrophobic material. The fiber has no aging effect, and thus, is excellent in durability, and has such a large contact angle and such as small sliding angle that the fiber may not be wet with water. A method for fabricating the super-hydrophobic fiber includes: a preparation step of preparing a pre-treating fiber; an etching step of etching a surface and an inner portion of the pre-treating fiber to fabricate a nano-needle fiber having a surface on which needle-shaped nano structures are formed; and a coating step of forming a coating layer containing a hydrophobic material, and enables mass production and is performed by simple processes.

Further, an article including the super-hydrophobic fiber is an article in which no liquid drop is absorbed, scarcely adsorbs a contaminant, needs not be dried, and thus, may be widely applied even to recreational articles.

Description

CROSS-REFERENCE TO RELATED APPLICAION[0001]Pursuant to 35 U.S.C. §119(a), this application claims the benefit of earlier filing date and right of priority to Korean Application No. 10-2014-0000891, filed on Jan. 3, 2014, the contents of which is incorporated by reference herein in its entirety.BACKGROUND OF THE DISCLOSURE[0002]1. Field of the Disclosure[0003]The present disclosure relates to super-hydrophobic fiber having a surface including needle-shaped nano structures and in which a coating layer containing a hydrophobic material is formed on the surface, a method for fabricating the same, and a fiber product comprising the same.[0004]2. Background of the Disclosure[0005]In order to impart a hydrophobic or contamination prevention function to the conventional functional clothing, methods of coating a material having a low surface energy, such as hydrophobic Teflon have been adopted. Further, International Publication No. WO 2012 / 152997 discloses a method of forming a super-hydrop...

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Benefits of technology

[0054]The fiber product may be, for example, a raw fabric for a tent, a raw fabric for an umbrella, a raw fabric for shoes, a banner, a raw fabric for a cap, a raw fabric for a bag or a knapsack, clothing, or a combination thereof. The fiber product may be a raw fabric for an umbrella, and when the raw fabric for an umbrella is made of the super-hydrophobic fiber, a liquid drop such as a raindrop is rarely absorbed in the raw fabric, and as a result, the umbrella is not wet, and needs not be dried after the umbrella is used. Further, since an umbrella tray, a plastic bag for storing an umbrella and the like are not required for a rainy day any more, convenience of life in a rainy day may be further improved.

[0055]In addition to the umbrella, the fiber products fabricated by including the super-hydrophobic fiber as described above may remove inconvenience occurring and need for incidental auxiliary articles if the product are wet, and accordingly, social costs may be reduced, and the fiber products may also be applied to various fields.

[0056]Since the super-hydrophobic fiber of the present disclosure ha

Problems solved by technology

WO 2012/152997 discloses a method of forming a super-hydrophobic surface having a nano structure including: applying a solution obtained by mixing nanocellulose particles on the surface by a spray method, and evaporating moisture from the applied solution, but since a hydrophobic solution is applied by a spray method, it is difficult to form a uniform coating layer, and there is a problem in that due to the separation of particles introduced for forming a hydrophobic surface from the surface, contamination, or deterioration in hydrophobic characteristics easily occurs.

As another example, the document [M. Joshi, et al., Nano structured coatings for super hydrophobic textiles, Bulletin of Materials Science] suggests a method of forming a surface with a low surface energy having a nano structure by depositing silica nanoparticles on fabric, but since there is a concer

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