【摘要】 大气放射性氙监测对于核试验检测具有重要意义.以从空气中分离浓缩氙为应用背景，实验测试了N₂、O₂、CO₂和Xe 4种气体在不同类别膜材料中的渗透性，评价了不同膜材料对4种气体之间的分离性能；考察了温度、压力等操作条件变化对氙气分离性能的影响.结果表明，在聚酰亚胺（PI）、聚苯醚（PPO）和聚砜（PSf）3类材料中，PI具有明显优于其他两类材料的氙气分离性能；温度和压力变化对氙气分离性能的影响均不明显.上述研究工作对于气体分离膜从空气中分离氙气的实际应用具有重要意义.更多还原

【Abstract】 Atmospheric radioxenon monitoring is of great significance for nuclear test ban verification. Taking the separation and concentration of xenon from air as the application background, this paper tested the permeabilities of N₂, O₂, CO₂ and Xe in various membrane materials, and the separation performances for the gases were compared. The effects of temperature and pressure on the gases permeation and separation were investigated. The results show that among the three types of materials, namely polyimide（PI）, polyphenylene ether（PPO） and polysulfone（PSf）, PI has a significantly better xenon separation performance than the other two types of materials; the influences of temperature and pressure changes on the xenon separation performance are both not obvious. The above research work is of great significance for the practical application of gas separation membranes in separating xenon from air.更多还原