气氛对γ射线辐照氟橡胶降解产物的影响  

Effects of Ambience on γ-Ray Radiation Degradation Products of Fluororubber

作　　者：罗世凯[1] 世凯[2] 钟志京[2] 傅依备[2] 罗顺火[1] 龙新平[1] 许云书[2] 

机构地区：[1]中国工程物理研究院化工材料研究所 [2]中国工程物理研究院核物理与化学研究所,,绵阳621900

出　　处：《材料导报》2001年第4期67-69,共3页Materials Reports

基　　金：中国工程物理研究院重点基金(1999Z0503)

摘　　要：氟橡胶 F2311[偏氟乙烯和三氟氟乙烯(1:1)共聚物]在真空、氮气、空气三种气氛条件下经50～1000kGy剂量γ射线辐照发生降解反应,辐射降解产物用GC-Ms、离子选择性电极、原子吸收光谱、红外光谱等方法分析测试。产生的 H_2(在空气气氛中除外)、HF、HCl、CO_2等气体的量随剂量的增加而增大;在空气气氛中剂量达到500kGy 时产生的 H_2的量为最大,剂量再增加时逐渐减小;氮气的存在对 F2311的幅射降解反应具有一定的抑制作用。F2311辐照后产生-CF=CH-、-CF=CF-、>C=0等基团。γ-Ray radiation degradation of fluororubberF2311[vinylidene fluoride and chlorotrifluoro ethyylene (molar radio 1:1)copolymer]could take place above 50kGY in vacuum,nitrogen and air atmosphere.The gaseous products of γ-irradiated F2311 were examined by means of GG-MS,ISE,AAS and FTIR.etc.It was found that quanti ty of H_2(except in the air)、HF、HCI and CO_2 increased with dose,and H_2 content was highest at a dose of 500kGY in air.Inhibiting effect of nitrogen on radiation degradation of F2311 was also found.The groups of—CF—CH —CF=CF—、>C=O etc were detected in γ-irradiated F2311.

关 键 词：氟橡胶F2311 Γ射线 辐射降解 降解产物 辐照效应 

分 类 号：TQ333.93[化学工程—橡胶工业] O631.34[理学—高分子化学]