Relationship between free volume and mechanical properties of polyurethane irradiated by gamma rays
文献类型：期刊论文
| ; | |
| 作者 | Sui, HL; Liu, XY; Zhong, FC; Li, XY; Wang, BY; Ju, X;王宝义 |
| 刊名 | JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
 ; JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
|
| 出版日期 | 2014 ; 2014 |
| 卷号 | 300期号:2页码:701-706 |
| 关键词 | Polyurethane Free volume Positron annihilation lifetime spectroscopy Gamma ray Polyurethane Free volume Positron annihilation lifetime spectroscopy Gamma ray |
| ISSN号 | 0236-5731 |
| DOI | 10.1007/s10967-014-3048-7 |
| 英文摘要 | Polyurethane was irradiated at various gamma radiation doses up to 1,000 kGy at room temperature in nitrogen. Positron annihilation lifetime spectroscopy, tensile test and dynamic mechanical analysis were used to find the relationship between free volume and mechanical properties. An increase of the free volume fraction in soft segments (SS) and a decrease of the free volume fraction in hard segments (HS) during gamma radiation was observed and analyzed. The results showed that HS in polyurethane had the excellent resistance to gamma radiation, whereas SS had a tendency to degrade. The reason for the decrease of the strain at break and the ultimate tensile strength was analyzed, which showed the changes in the mechanical properties of polyurethane irradiated by gamma rays were mainly determined by the changes of free volume in SS. If the resistance properties of polyurethanes exposed to radiations need to be improved, SS should be paid more attention to.; Polyurethane was irradiated at various gamma radiation doses up to 1,000 kGy at room temperature in nitrogen. Positron annihilation lifetime spectroscopy, tensile test and dynamic mechanical analysis were used to find the relationship between free volume and mechanical properties. An increase of the free volume fraction in soft segments (SS) and a decrease of the free volume fraction in hard segments (HS) during gamma radiation was observed and analyzed. The results showed that HS in polyurethane had the excellent resistance to gamma radiation, whereas SS had a tendency to degrade. The reason for the decrease of the strain at break and the ultimate tensile strength was analyzed, which showed the changes in the mechanical properties of polyurethane irradiated by gamma rays were mainly determined by the changes of free volume in SS. If the resistance properties of polyurethanes exposed to radiations need to be improved, SS should be paid more attention to. |
| 学科主题 | Chemistry; Nuclear Science & Technology ; Chemistry; Nuclear Science & Technology |
| 收录类别 | SCI |
| 电子版国际标准刊号 | 1588-2780 |
| 语种 | 英语 |
| WOS记录号 | WOS:000334505700035 ; WOS:000334505700035 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225157]  |
| 专题 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Sui, HL,Liu, XY,Zhong, FC,et al. Relationship between free volume and mechanical properties of polyurethane irradiated by gamma rays, Relationship between free volume and mechanical properties of polyurethane irradiated by gamma rays[J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,2014, 2014,300, 300(2):701-706, 701-706. |
| APA | Sui, HL,Liu, XY,Zhong, FC,Li, XY,Wang, BY,&Ju, X；王宝义.(2014).Relationship between free volume and mechanical properties of polyurethane irradiated by gamma rays.JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY,300(2),701-706. |
| MLA | Sui, HL,et al."Relationship between free volume and mechanical properties of polyurethane irradiated by gamma rays".JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY 300.2(2014):701-706. |
入库方式： OAI收割
来源：高能物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。