초록 ▼

●초발수 코팅재 제조기술 개발 : 장쇄유기실란 유무기나노하이브리드 시제품 →OTS, FOTS, DTS 장쇄유기실란 단코팅 기술개발 및 무기분산 안정화 기술 : 접촉각 >150도, 유전율 <3.3, Ta<-50도씨 → 접촉각 최대 160도 코팅재의 도체적용 → 탄성 실리콘고무 실리카하이브리드 코팅 기술(결빙 내구성 최적화)
●착빙설 억제 특성평가 : 저온 착빙설 제어력, 접착력(풍속환경), 전기전도도, 표면오손 → 복합Chamber 제작 시험 → 우수한 결빙내구성 및 회복성의 초발수코팅재 기술 개발
●초발수 표면과 착빙설

●초발수 코팅재 제조기술 개발 : 장쇄유기실란 유무기나노하이브리드 시제품 →OTS, FOTS, DTS 장쇄유기실란 단코팅 기술개발 및 무기분산 안정화 기술 : 접촉각 >150도, 유전율 <3.3, Ta<-50도씨 → 접촉각 최대 160도 코팅재의 도체적용 → 탄성 실리콘고무 실리카하이브리드 코팅 기술(결빙 내구성 최적화)
●착빙설 억제 특성평가 : 저온 착빙설 제어력, 접착력(풍속환경), 전기전도도, 표면오손 → 복합Chamber 제작 시험 → 우수한 결빙내구성 및 회복성의 초발수코팅재 기술 개발
●초발수 표면과 착빙설 제어 메카니즘 규명 및 최적화 모델링 연구 → Al 모제표면 모폴로지-에칭기술-초발수 코팅제의 물성(표면에너지, 유전특성, 열전도도..)의 상관성 연구로 부터 최적의 제조 우선 조건 확보
●착빙설 방지 코팅재의 송전선 가닥 및 묶음도체 적용 연구 : 코팅방법, 전처리기술
●초발수 결빙억제 관련 정량성과 : SCI급논문 2편 개재/ 핵심기술 특허 3건 출원

Abstract ▼

Heavy ice or wet-snow accretion on the conducting and insulating parts of transmission lines may lead to major service outages caused by insulator flashover, wire breakage, and complete electrical tower falling down. Therefore, solutions are needed to reduce or eliminate ice accumulation on transmis

Heavy ice or wet-snow accretion on the conducting and insulating parts of transmission lines may lead to major service outages caused by insulator flashover, wire breakage, and complete electrical tower falling down. Therefore, solutions are needed to reduce or eliminate ice accumulation on transmission lines. Prevention of icing requires reducing its adhesive strength. Therefore, various deicing and anti-icing techniques were developed over the last decades. The ability of superhydrophobic surfaces to reduce ice or snow accumulation was first tested by Saito et al., 1997. It has been also demonstrated that superhydrophobicity can improve self-cleaning and anticorrosive properties of Al alloys].In addition,Arianpour et al. reported on delayed water freezing on rough superhydrophobic surfaces [6]. Various techniques have been already reported for producing superhydrophobic surfaces. However, for all these cases, a systematic study of their hydrophobic and ice-repellent properties has not been reported thus far. Extensive research has recently been conducted to realize superhydrophobic surfaces [3]. It was demonstrated that superhydrophobicity depends not only on thesurface chemistry but also on the surface topology. Various methods have been developed to produce hydrophobic surfaces with nano-scale roughness. An important method to prepare such a surface is the sol-gel method.The rough topology will be simply formed by the nanoparticles on top of the surface. However, the hydrophobic behavior of Al surfaces coated with inorganic nanoparticles after various pretreatments has not been sufficiently understood until now. The ideal solution would be to apply a durable and easy-to-process material that would reduce the adhesion to such an extent that ice would fall off under the pull of gravity; e.g., alkyl-terminated coatings such as alkylsilane and fluoro-alkylsilane-based layers. A strong correlation between the hydrophobicity of surfaces and their ice-repellent behavior has previously been reported [1–3]. However,
the manufacturing processes were complex for hydrophobic and ice-phobic coatings in those studies. Therefore, more research on the applicability of alternative methods is required for industrial applications. In this research, a various approach to make superhydrophobic Al surfaces and wire is presented. The applied organic coatings terminating with long-chain groups were prepared as potential ice/snow-repellent layers on the Al surfaces via etching in hot water for a certain time, followed by a one-layer surface modification.The samples prepared with etching times of more than 3 h showed enhanced superhydrophobicity with static water contact angle (CA) of CA >150° and demonstrated good ice-phobic properties. The nanostructured surfaces were characterized and tested with appropriate procedures, and the coating stability with regard to the ice-repellent performance over time was carefully studied. The superhydrophobicity was dependent on the etching time and/or octadecyltrichlorosilane (OTS) concentration.
The samples were tested over numerous icing-deicing cycles to assess the durability of their ice-releasing performance. Moreover, ice adhesion on the samples was evaluated by testing the freezing delay time in an ice box.