氟树脂F2313辐射降解产物研究

应用气相色谱法、质谱法及离子选择电极分析法研究了氟树脂F2313在真空、空气和氮中经γ射线辐照后发生的降解反应。实验测定了HF,HCl和CO2的产额（G）值。研究结果发现,生成的HF,HCl的随剂增大而增大。当剂量为50kGy时,仅在空气气氛中检测到有CO2产生,CO2的质量随剂量的增大而增大。当剂量达到250kGy时,在真空、氮气、空气三种气氛中都有H2产生,H2的随剂量的增大而增大,空气气氛中产生的H2的质量最少。辐照后的样品经红外光谱（IR）分析发现有-CF-CF－基因。

STUDY OF RADIOLYSIS PRODUCTS OF FLUORORUBBER F2313

Fluororubber (F2313) is irradiated with gamma rays in air,nitrogen and vacuum respectively. Degradation gases,such as H 2,CO 2,CO 2,HF and HCl produced from F2313 radiolysis are determind by GC MS and ion selected electrode (ISE).The G values of HF,HCl and CO 2 are determined.It is found that CO 2 is produced only in air ambience when the dose increases to 50 kGy.While H 2 is detected in all three ambinces respectively after the dose increases as high as 250 kGy.The content of HF,HCl and CO 2 are all increased with dose.The amount of H 2 is increased with dose too and the amount of H 2 is least in air ambience.Groups of CF CF formed in F2313 after radiolysis are identified with IR.