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Title:
ANTIFOULING, LOW-FRICTION FILM FOR SHIPS UTILIZING ULTRAFINE PROTRUSIONS AND RIBLET STRUCTURE, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2021/080285
Kind Code:
A1
Abstract:
The present invention relates to an antifouling, low-friction film which is for ships and utilizes ultrafine protrusions and a riblet structure, and a method for manufacturing same. Upright protrusions, which are intended to reduce frictional resistance by generating micro vortices in a film obtained by adding a self-lubricating material and an antibacterial material as an auxiliary antifouling means to thermoplastic urethane, which is a type of thermoplastic elastic body having high tensile strength and excellent wear resistance, instead increase frictional resistance due to friction with the water, and thus, in the film of the present invention, riblet-type fine protrusions having upper ends that are bent like shark scales are formed instead of upright protrusions. Also, in the case of riblet-type fine protrusions having thicker and taller protrusions, antifouling efficiency is low because there is space in the gaps between the protrusions for larvae of marine organisms to linger, and thus, in the film of the present invention, ultrafine protrusions thinner and shorter than the riblet-type fine protrusions are formed on the entire surface of the film in empty spaces without riblet-type fine protrusions so as to achieve physical antifouling. Accordingly, an eco-friendly efficient antifouling effect can be achieved while saving fuel due to the reduced frictional resistance provided by the riblet structure.

Inventors:
HUR, Nam Il (Dong-gu, Ulsan, KR)
Application Number:
KR2020/014319
Publication Date:
April 29, 2021
Filing Date:
October 20, 2020
Export Citation:
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Assignee:
HUR, Nam Il (Dong-gu, Ulsan, KR)
International Classes:
B63B59/04; B63B1/34; B29C59/00; B29C59/04
Attorney, Agent or Firm:
JEON, Seung Jun (Teheran-ro 84-gilGangnam-gu, Seoul, KR)
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