氢氟酸处理对PP和PET储电性的影响及其电荷动态特性

Effect of HF Treatment on the Charge Storage Properties of PP and PET Film and Their Charge Dynamic Characteristics

开路TSD电流谱的研究结果表明,经萃取、氧化和氢氟酸处理的PP孔洞膜的电荷稳定性得到显著的提高,而氢氟酸处理的PET膜的电荷稳定性较原膜显著地降低.理论分析表明,电荷TSD在线测量法可给出升温过程中电荷重心及电荷量变化的综合信息.电荷TSD在线测量表明,升温过程中两种聚合物膜的电荷重心明显地向膜自由面漂移,表面层中存在比体阱更深的能阱.光照或提高温度对发生在表面层中的化学反应具有明显地促进作用.

It has been indicated by TSD current spectra that the charge stability of the chemically treated PP films by extraction, oxidation, and HF solution is significantly improved while that of the HF-treated PET films becomes bad. An in situ TSD charge spectrum contains combined information on the changes of the mean charge depth and the deposited charge value. TSD charge spectra show an obviously shift of the mean charge depth toward the free surface of samples for the two kinds of polymers during heating, indi...