摘要
研究了一种用于不锈钢设备表面放射性污染去除的乙烯聚合物可剥离膜,讨论了成膜主剂乙烯聚合物浓度、络合剂EDTA-Na-Ca、增稠剂CMC-2Na、增塑剂PEG-200、表面活性剂nmCaCO3以及HCl掺杂量对可剥离膜的物化性质和去污效率等主要性能参数的影响,该可剥离膜成膜干燥时间为8h,对90Sr污染浓度为0.02-0.20Bq/cm2的表面去污效率达80%以上。
A strippable film of polyvinyl alcohol （PVA） for decontamination of radioactive dusts on stainless steel （SS） device surface was developed by investigating the film-stripping ability from the SS surface and the contamination-removal efficiency of the films of various preparation parameters. They include PVA concentration of the film-making solution, and amounts of EDTA-Na-Ca as complexing agent, CMC-2Na as thickening agent, PEG-200 as plasticizer, nmCaCO3 as surfactant, and 1.85 mol/L HCl. The PVA film, which can be dried in 8 h, is capable of removing over 80% of surface contamination of 90Sr at 0.02-0.20 Bq/cm2.
出处
《核技术》
CAS
CSCD
北大核心
2010年第9期714-720,共7页
Nuclear Techniques
关键词
可剥离膜
表面污染
放射性
去除
Strippable film
Surface contamination
Radioactive
Removal
