有机硅环氧漆膜γ射线辐照结构分析
Structure Analysis of Silicone Epoxy Coating Films Irradiated by γ-Ray
许楠楠 1李公平 1李彤 1刘同环 1丁晶洁 1李华明 2雍涛 2曾慧崇 2王乃迪 2彭乃卫 3彭宁馨4
作者信息
- 1. 兰州大学核科学与技术学院,兰州 730000
- 2. 西北永新涂料有限公司,兰州 730000
- 3. 郑州宏源生物工程有限公司,郑州 450000
- 4. 南华大学核科学技术学院,湖南衡阳 421200
- 折叠
摘要
对自制的耐辐射环氧(EP)涂料漆膜和有机硅环氧(SiEP)涂料漆膜样品同时开展了11 Gy/s、总辐照剂量5×107 Gy的大剂量γ射线辐照工作.测试了EP和SiEP样品辐照前后的机械性能和附着力;通过红外光谱对比分析了EP和SiEP样品在该辐照条件下漆膜表层和次表层的结构变化.结果表明,辐照后EP样品的柔韧、冲击、硬度、耐磨及附着力性能指标退化严重,而SiEP的相关性能则基本保持不变;EP和SiEP漆膜辐照后均出现了黄变现象,这与漆面氧化有关.通过对比辐照前后SiEP漆膜样品的红外光谱发现,稳定的Si—O结构可能是SiEP漆膜机械性能和附着力辐照后未发生显著变化的主要原因.
Abstract
The high-dose γ-radiation with total irradiation dose of 5×107 Gy and rate of 11 Gy/s was carried out by self-de-veloped epoxy resin(EP)and silicone epoxy resin(SiEP)coating film.The mechanical properties and adhesion of EP and SiEP were tested before and after irradiation.The structural changes on both the surface and subsurface layers of the paint films of EP and SiEP samples under the irradiation conditions were compared and analyzed by infrared spectroscopy.The results indicate that the flexibility,impact,hardness,wear resistance,and adhesion performance of the irradiated EP have severely degraded,while the relevant properties of SiEP remain unchanged.Both EP and SiEP coating films turn yellow after irradiation,and analysis sug-gests that yellowing is related to the oxidation of paint surface.By comparing the FTIR spectra of the SiEP coating samples before and after irradiation,the stable Si—O bond maybe the main reason why the mechanical and adhesive properties of SiEP did not change significantly.
关键词
耐核辐射/环氧/γ辐照/氧化/降解/有机硅/防护涂层Key words
resistance to nuclear radiation/epoxy/γ-irradiation/oxidation/degradation/silicone/protective coating引用本文复制引用
基金项目
甘肃省科技重大专项(21ZD8JA002)
出版年
2024
NETL
NSTL
万方数据