中文摘要：

为了研究交流电晕对室温硫化（room temperature vulcanization，RTV）和高温硫化（high temperature vul—canization，HTV）硅橡胶憎水性丧失和恢复的影响，基于硅橡胶电晕测试系统在相同的温度、湿度和场强下对同样厚度的RTV和HTV硅橡胶进行了电晕，测量l『不同电压和电晕持续时间情况下RTV和HTV硅橡胶在电晕和恢复时的静态接触角随时间的变化情况。研究发现：同样的电压和加压时间情况下，RTV硅橡胶电晕后憎水性丧失速度慢于HTV硅橡胶，憎水性恢复到初始值所需时间明显短于HTV硅橡胶。随电晕时间的增加硅橡胶憎水性恢复到初始值所需时间存在增加的趋势。随电晕电压的增加硅橡胶憎水性下降速度加快，憎水性恢复到初值所需时间存在增加的趋势；随电晕时间、电压的增加晕圈逐渐增大。电晕的开始阶段憎水性快速下降，随时间增加速度逐渐下降，后来憎水性逐渐趋于稳定；恢复的开始阶段憎水性恢复速度快，随时间增加速度逐渐下降，后来憎水性逐渐趋于稳定。对电晕后硅橡胶表面进行了扫描电镜（scanning electron microscope，SEM）分析，发现RTV硅橡胶表面破坏情况比HTV硅橡胶严重。

英文摘要：

To study the influence of AC corona on hydrophobicity loss, recovery of room temperature vulcanization （RTv}, and high temperature vulcanization （HTV） silicone rubber, we measured the corona of RTV and HTV samples with the same thick and the same temperature, humidity and electric field strength based on the established corona measurement system, the static contact angle of different time of corona, and recovery stage in different du- ration and voltage. The result indicates that： if the corona voltage and corona duration is the same, the hydrophobic- ity loss speed of RTV is slower than that of HTV, the time of hydrophobicity recovering to initial value of RTV is obvious shorter than that of HTV. The hydrophobicity recovery time will increase with the increase of corona dura- tion. The hydrophobicity loss speed and the hydrophobicity recovery time will increase with the increase of corona voltage. Halo area will increase with the increase of corona duration and corona voltage. The hydrophobicity loss speed is fast in corona initial stage, then the hydrophobicity loss speed will decrease with the increase of corona time, finally the hydrophobicity of the silicone rubber will tend to be stable. The hydrophobicity recovery speed is fast in recovery initial stage, then the hydrophobicity recovery speed will decrease with the increase of recovery time, finally the hydrophobiclty will tend to be stable. The silicone rubber samples after corona were analyzed by scanning electron microscope （SEM）, the result indicates that surface damage degree of RTV is more serious than that of HTV.