基于直接氟化调控环氧树脂的表面电学性能及氟化层的老化性能研究

项目名称： 基于直接氟化调控环氧树脂的表面电学性能及氟化层的老化性能研究

项目编号： No.51277132

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 电工技术

项目作者： 安振连

作者单位： 同济大学

项目金额： 72万元

中文摘要： 在直流高压作用下环氧树脂绝缘支撑件的表面上易于积累电荷，抑制其表面电荷积累是开发直流输电用气体绝缘开关设备(GIS)和气体绝缘输电线路(GIL)的关键。为抑制环氧树脂绝缘件的表面电荷积累，本课题拟通过表层氟化改性、调控其表面电学性能。首先将研究氟化条件（时间、温度和氟气浓度等）对表层的性状（组成、结构和形貌）和厚度的影响，揭示氟化层的性状和厚度与氟化条件的关联。进而研究氟化层的基本电学性能及表面疏水性和阻挡特性，确立有效提高表面电导率、表面疏水性和阻挡特性的氟化条件。然后研究氟化层的电晕老化、热老化和湿热老化性能及老化机理，揭示老化性能与其性状和厚度的关联性。开展环氧树脂绝缘件（尤其在直流高压下）的沿面闪络特性研究，基于闪络特性和老化性能综合评价氟化层的性能。最后研究氟化与无机颗粒填充对环氧树脂表层性能的综合影响，最大限度地提高其闪络电压和老化性能，为实际应用提供实验与理论依据。

中文关键词： 环氧绝缘；直接氟化；氟化层物化特征；电学性能；老化性能

英文摘要： Electric charges are easily accumulated on surface of an epoxy resin insulator when it is subjected to a direct current high voltage, and suppression of the surface charge accumulation is the key to develop the gas-insulated switchgears (GIS) and gas-insulated lines (GIL) used for direct current power transmission. In order to suppress the surface charge accumulation on the epoxy resin insulator, in the research project, its surface electrical properties will be modulated by surface fluorination of the epoxy resin insulator. The influences of fluorination conditions (time, temperature, and concentration of fluorine gas etc.) on the character (composition, structure, and morphology) and thickness of the surface layer are first investigated to reveal the association of the character and thickness of the fluorinated layer with fluorination conditions. And then the basic electrical properties, surface hydrophobicity, and barrier properties of the fluorinated layer are studied to determine the fluorination conditions under which surface conductivity, surface hydrophobicity, and barrier properties can be effectively enhanced. Afterwards the investigations on corona, thermal and hygrothermal aging properties of the fluorinated layer and on the aging mechanisms are performed to disclose the correlation of the aging prop

英文关键词： Epoxy insulator；Direct fluorination；Fluorinated layer physicochemical characteristics；Electrical properties；Aging properties