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聚合物电介质材料在低温(接近或低于液氮沸点)下比室温下能俘获更多由电极注入的带电粒子并形成空间电菏,将影响聚合物电介质在低温下的介电性能.本文用电声脉冲法和热刺激电流法(TSC)测量了空间电荷的分布及陷阱能级,表明该现象与聚合物电介质中存在的浅能级局部态有关.本文的研究为选用低温电气绝缘聚合物材料提供了新的依椐.
Polymer dielectric materials can trap more charged particles injected into the electrode and form a space charge at a lower temperature (near or below the boiling point of liquid nitrogen) than at room temperature, affecting the dielectric properties of the polymer dielectric at low temperatures. Electroacoustic pulse method and thermal stimulation current method (TSC) measured the spatial charge distribution and trap level, indicating that this phenomenon is related to the superficial state of superficial energy existing in the polymer dielectrics.In this paper, the choice of low temperature electrical insulating polymer The material provides a new way to go.