Effect of ultraviolet radiation on charge storage stability of porous PTFE and nonporous PTFE electret

摘要

Effects of ultraviolet (UV) radiation on charge storage stabilities of porous and non-porous polytetrafluoroethylene (PTFE) electrets were investigated by the isothermal surface potential decay measurements. The feasibility of UV radiation disinfection on medical products of PTFE electret was also studied. The results indicated that (1) UV radiation did not show any significant influence in the charge storage stability of two PTFE films under room temperature. (2) The charge storage stability of porous PTFE decreased slightly with the increasing of relative humidity (RH). (3) The medical electret products of PTFE could be disinfected by UV radiation.