γ射线辐照对含钆有机玻璃性能的影响  

The effect ofγ-ray irradiation on the properties of gadolinium-containing plexiglass

作　　者：许紫洋 蒋涛 王帅 王春宏[2] 张明[2] XU Ziyang;JIANG Tao;WANG Shuai;WANG Chunhong;ZHANG Ming(China Nuclear Power Engineering Co.LTD.,Zhengzhou Branch,Zhengzhou 450000;College of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou 225002)

机构地区：[1]中国核电工程有限公司郑州分公司,郑州450000 [2]扬州大学化学化工学院,扬州225002

出　　处：《分析试验室》2022年第1期70-74,共5页Chinese Journal of Analysis Laboratory

基　　金：“十三五”装备预先研究项目(171-XXXZY01-ZZFGS)资助。

摘　　要：以^(60)Co作为γ射线源,对不同Gd元素含量的含钆有机玻璃进行不同剂量的γ射线辐照。通过可见光吸收光谱仪、万能试验机、热重分析仪和电子顺磁共振波谱仪等仪器测定含钆有机玻璃在γ射线辐照前后的光学性能、力学性能、热性能和自由基的变化。结果表明,随着γ射线辐照剂量的增加,含钆有机玻璃发生辐照降解,产生大量自由基,导致材料发生变色发黄现象,冲击强度、弯曲强度以及热稳定性能均有下降的趋势。且Gd元素含量越高,辐照降解程度越大。In this paper,gadolinium-containing plexiglasses with different gadolinium content were irradiated with different doses ofγ-rays using ^(60)Co as theγ-ray source.The optical,mechanical,thermal and free radical properties of the gadolinium-containing plexiglasses before and afterγ-ray irradiation were measured by visible absorption spectrometer,universal testing machine,thermogravimetric analyzer and electron paramagnetic resonance spectrometer.The results showed that with the increase ofγ-ray irradiation dose,the gadolinium-containing plexiglass undergone irradiation degradation,generating a large number of free radicals,resulting in discolouration and yellowing of the material,and the impact strength,bending strength and thermal stability properties all tended to decrease.The higher the content of gadolinium,the greater the irradiation degradation.

关 键 词：含钆有机玻璃 Γ射线辐照 光学性能 力学性能 自由基 

分 类 号：O657.4[理学—分析化学]