【摘要】 采用动态流导法，在分子流状态和不同温度下，测量了ＰＰ膜的放气率和平衡压强并研究了其放气特性。实验证明了其放气率随时间按指数函数衰减，同时获得了平衡压强数据。更多还原

【Abstract】 The outgassing rate and its eguilibrium pressure are measured by the dynamic conductance method at the molecular flow condition and different temperatures for the polypropylene film.Its vacuum characteristics is discussed in this paper.It is proved by the measurement that the outgassing rate of polypropylene film is decreased with exponential function.The data of eguilibrium pressure are obtained.It will be the basis of improving the vacuum impregnating technology for some electric products更多还原