Inhibiting Ice Accumulation on Conductors by Using Sheath Treated with Super-hydrophobic Surfaces  

作　　者：LI Jian GONG Yiyu LI Yong HU Jianlin SUN Caixin XIAO Daibo 

机构地区：[1]State Key Laboratory of Power Equipment & System Security and New Technology, Chongqing University, Chongqing 400030, China [2]Chongqing Electric Power Research Institute, State Grid Chongqing Electric Power Company, Chongqing 401123, China [3]Suizhou Electric Power Supply Company, Suizhou 441300, China

出　　处：《高电压技术》2013年第10期2500-2505,共6页High Voltage Engineering

基　　金：Project supported by National Natural Science Foundation of China（51107152）, Ftmd for Innovation Research Groups（51021005）, Key Science and Technology Project of Chongqing Eleelric Power Company （2012 Yu Electricity Science and Technoloyg 18）.

摘　　要：Ice accumulation on transmission lines often leads to great damage to power systems.Super-hydrophobic surfaces are proposed to inhibit ice accumulation on electrical power equipment.A novel anti-icing method was presented for conductors with super-hydrophobic sleeves.The super-hydrophobic sleeves were prepared by applying polydimethylsiloxane(PDMS) and nano-silica hybrid coating on the outer surface of polyethylen terephthalate(PET) sleeves.Hydrophobicity and ice adhesion strength of the super-hydrophobic surface were investigated.Ice accumulation experiments were carried out on ordinary conductors,super-hydrophobic coated conductors,PET sleeve-covered conductors,and super-hydrophobic PET sleeve-covered conductors.Ice accumulation morphology,accumulated ice weight,and the icicle length of these four types of conductors were studied and analyzed.At the end of the 3 h ice accumulation experiment,the ice weight and icicle length on the conductor with super-hydrophobic PET sleeve was only approximately one tenth and one seventh of that on the untreated conductor respectively.Furthermore,the water contact angles of super-hydrophobic coated aluminum surface and super-hydrophobic coated PET sleeve were about 163o in average.The results indicate that the super-hydrophobic coating is effective in inhibiting ice accumulation on conductors.However,the use of a super-hydrophobic PET sleeve is a significantly more effective method,comparing with the application of a super-hydrophobic coating directly on the conductor.Ice accumulation on transmission lines often leads to great damage to power systems. Super-hydrophobic surfaces are proposed to inhibit ice accumulation on electrical power equipment. A novel anti-icing method was presented for conductors with super-hydrophobic sleeves. The super-hydrophobic sleeves were prepared by applying polydimethylsiloxane（PDMS） and nano-silica hybrid coating on the outer surface of polyethylen terephthalate （PET） sleeves. Hydrophobicity and ice adhesion strength of the super-hydrophobic surface were investigated. Ice accumulation experiments were carried out on ordinary conductors, super-hydrophobic coated conductors, PET sleeve-covered conductors, and super-hydrophobic PET sleeve-covered conductors. Ice accumulation morphology, accumulated ice weight, and the icicle length of these four types of conductors were studied and analyzed. At the end of the 3 h ice accumulation experiment, the ice weight and icicle length on the conductor with super-hydrophobic PET sleeve was only approximately one tenth and one seventh of that on the untreated conductor respectively. Furthermore, the water contact angles of super-hydrophobic coated aluminum surface and su- per-hydrophobic coated PET sleeve were about 163~ in average. The results indicate that the super-hydrophobic coating is effective in inhibiting ice accumulation on conductors. However, the use of a super-hydrophobic PET sleeve is a significantly more effective method, comparing with the application of a super-hydrophobic coating directly on the conductor.

关 键 词：疏水表面 积冰 超疏水性表面 导线 涂层导体 聚二甲基硅氧烷 治疗 护套 

分 类 号：TQ245.12[化学工程—有机化工] Q512.101[生物学—生物化学]