127-环氧树脂胶及其组分的辐射效应研究

THE STUDY OF RADIATION EFFECT ON 127-EPOXY RESIN ADHESIVE AND ITS COMPONENTS

研究了在室温条件下 ,空气、氮气或真空气氛中 ,γ射线对 12 7-环氧树脂胶及其组分 :E - 4 4环氧树脂、邻苯二甲酸二丁酯和无水乙二胺的辐射效应。以气相色谱 (GC)法对各种样品γ辐解所产生的H2 、CH4 和CO2 等气体产物进行了测定。结果表明 ,气氛条件和辐射剂量对各种样品辐解生成 3种气体产物的量有重要影响。其中CO2 的生成量不仅直接受气氛中O2 含量影响 ,而且与样品分子结构中是否含氧关系密切。 12 7-环氧树脂胶和邻苯二甲酸二丁酯γ辐解所生成的H2 、CH4 和CO2 等气体产物的量均随辐射剂量的增大而增大。而且 12 7-环氧树脂胶的γ辐解产物H2 和CH4 的量以及邻苯二甲酸二丁酯的γ辐解产物CH4 的量均与辐射剂量呈线性递增关系。从辐射化学效应来说 ,12 7-环氧树脂的抗辐照性能较差。

epoxy resin adhesive and its components: E-44 epoxy resin, dibutyl-o-phthalate and anhydrous ethylenediamine were irradiated with γray in air, nitrogen or vacuum at ambient temperature respectively. The gaseous products such as hydrogen, methane and carbon dioxide were examined by means of GC. Remarkable effect of ambiences and dose on γradiated degradation of these specimen were found. The results indicated that the content of gaseous products increased with dose, but changed with ambiences. The forming of carbon dioxide was not only determined by the amount of oxygen in ambience, but also by whether the specimens structure contained oxygenous groups or not. It was shown that there were good linear increasing relationships between dose and the concentration of gaseou products hydrogen and methane for 127-epoxy resin adhesive, and methane for dibutyl-o-phthalate.All above indicated low radiation-resistance of 127-epoxy resin adhesive.