The heat melting method was used to prepare the porous PTFE/PE/PP electret.The charge storage stability of the electret was studied by determination of isothermal surface potential decay.

• 用热融法将多孔聚四氟乙烯(PTFE)、聚乙烯(PE)和聚丙烯(PP)制备多孔PTFE/PE/PP驻极体,通过表面电位衰减测量研究多孔PTFE/PE/PP驻极体的电荷储存稳定性;