摘要
国内外电网覆冰事故时有发生,防止电网覆冰事故的方法有短路电流融冰、机械除冰和憎水性涂料防冰等多种措施,但在实际应用中,由于环境条件的差异,各种方法均存在局限性。研究表明,采用憎水性涂料降低冰与衬垫表面的粘接力有助于冰的脱落,可以作为一种防冰的辅助措施。但目前关于影响冰与衬垫表面粘接力的因素的分析和研究不多,不能为工程应用和防冰涂料的研究提供有效参考。鉴于此,在自然覆冰试验站研究了冰与衬垫表面的粘接力特性,分析了影响冰与衬垫表面粘接力的因素。结果表明:衬垫表面的憎水性虽然不能防止冰层的形成,但可降低冰与衬垫表面的附着力;冰与衬垫表面的粘接力与环境温度有关,与衬垫材料性质和衬垫表面涂料的特性有关;衬垫表面的憎水性特性影响衬垫与冰层的粘接力,憎水性越强,冰的粘接力越弱。因此,可以通过提高憎水性降低冰在衬垫表面的附着力,从而达到有助于采用其它各种措施除冰的目的。
The adhesion strength properties of ice with liner at the nature icing experiment station were focused on, and the influential factors were analyzed; The results show that the hydrophobicity of liner surface can not prevent the formation of ice but reduce the adhesion of ice with liner. The adhesion strength between ice and liner surface is related with the environment temperature, the properties of the liner material, and the characteristics of the surface coating on liner. The adhesion strength is also related with the hydrophobic properties of the liner surface, and the stronger the hydrophobicity is, the weaker the adhesion strength will be. Therefore, the adhesion strength of ice with liner can be decreased by increasing the hydrophobicity of the surface, so as to achieve a de-icing purpose by the help of variable measures.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2011年第4期1050-1056,共7页
High Voltage Engineering
基金
国家重点基础研究发展计划(973计划)(2009CB7245011502)~~
关键词
自然覆冰试验站
衬垫
憎水性
粘接力
覆冰
涂料
防冰
nature icing experiment station
liner
hydrophobicity
adhesion strength
icing
coating
anti-icing
