摘要
使用γ射线对6种锂基润滑脂进行辐照,6种润滑脂的颜色都发生了变化,且其变化程度随吸收剂量的增加呈正相关关系。复合锂基润滑脂经吸收剂量为8.1×103 kGy辐照后,稠化剂软化降解并提前进入硬化交联阶段,平均剪切应力上升169%;其基础油与受相同剂量处理的简单锂基润滑脂相比生成了额外的氧化产物。简单锂基润滑脂在接受8.1×103 kGy剂量辐照后稠化剂软化,稠度下降,但平均剪切应力下降,其劣化程度轻于复合锂基润滑脂。简单锂基润滑脂可能更适合辐照加工的工作环境。
Usingγray to irradiat six types of lithium grease,the color of these greases was observed to change,and the degree of change was found to be positively correlated with an increase in the absorbed dose.After irradiation with an absorbed dose of 8.1×103 kGy,the thickener of the lithium complex grease softened,degraded,and entered the hardening and crosslinking stage ahead of its ordinary degradation process.Furthermore,its average shear stress increased by 169%.Additional oxidation products were generated from the base oil of the lithium complex grease compared with the simple lithium-based grease treated with the same absorbed dose.When simple lithium grease absorbed a dose of 8.1×103 kGy,its thickener also softened and the consistency decreased;however,its average shear stress decreased.The degree of deterioration of the simple lithium grease was seemingly lighter than that of the lithium complex grease.Therefore,simple lithium grease may be more suitable for irradiation facilities.
作者
周毅吉
李文革
徐远芳
张祺玲
武小芬
赵彩凤
张勇
邹朝晖
彭玲
ZHOU Yiji;LIWenge;XU Yuanfang;ZHANG Qiling;WU Xiaofen;ZHAO Caifeng;ZHANG Yong;ZOU Zhaohui;PENG Ling(Hunan Institute of Nuclear Agricultural Sciences and Space Breeding,Changsha 410125,China;Hunan Engineering Technology Research Center of Agricultural Biological Irradiation,Changsha 410125,China;Hunan Biological Irradiation Technology Engineering Research Center,Changsha 410125,China)
出处
《辐射研究与辐射工艺学报》
CAS
CSCD
2021年第1期29-36,共8页
Journal of Radiation Research and Radiation Processing
基金
湖南省农业科技创新资金项目(2018QN40)
湖南省自然科学基金资助项目(2018JJ4012)资助。
关键词
锂基润滑脂
辐照耐受性
辐照
γ
射线
Lithium-based grease
Irradiation tolerance
Irradiation
Gamma rays
