阻隔材料的气体渗透率

对气体渗透阻隔材料的渗透率与气体温度、气体压强的关系进行了理论分析，得到了在不同温度和气体压强条件下渗透率的加速因子的计算式，理论计算结果与相关文献中实验测量结果比较一致。根据加速条件下进行的水蒸气、氧气和二氧化碳对聚对苯二甲酸（PET）和环氧树脂渗透率测量的结果，计算得到在常温常压条件下这些气体对0.155 mm厚PET塑料的渗透率和对0.065 mm厚环氧树脂的渗透率。

Gas permeability of barrier materials

The theoretical formula of gas permeation acceleration factor was derived for barrier materials under different gas temperature and pressure. The theoretical calculation results are consistent with the experimental results (in the literature). The permeability of various gases，including water vapor, oxygen and carbon dioxide, through polyethylene terephthalate (PET) plastic and epoxy resin, was measured by mass spectrometry under accelerated conditions. At normal temperature and pressure, the gas permeabilities of PET plastic film with a thickness of 0.155 mm are 1.1×10-2 g/(m2·d), 1.6×10-4 cm3/(m2·d), 8×10-4 cm3/(m2·d), and the gas permeabilities of epoxy resin film with a thickness of 0.065 mm are 1.7×10-2 g/(m2·d), 3.5×10-5 cm3/(m2·d), 5.5×10-5 cm3/(m2·d).