AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties
文献类型：期刊论文
| 作者 | Yang ZH(杨增辉)1,2 ; Wang QH(王齐华)1; Bai YK(白永康)1,2; Wang TM(王廷梅)1; Wang QH(王齐华)
|
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2015 |
| 卷号 | 5期号:89页码:72971-72980 |
| ISSN号 | 2046-2069 |
| 通讯作者 | 王齐华 |
| 英文摘要 | Shape memory polyimide/silica (PI/silica) composites with atomic oxygen resistance, good thermal stability and mechanical properties are synthesized by co-condensation of poly(amic acid) terminated with (3-aminopropy)triethoxysilane (APTES) and tetraethoxysliane (TEOS) via a sol-gel method. The silica networks formed in the hybrid films act not only as permanent crosslink points, but as atomic oxygen (AO) resistant moieties. The results show that the PI/silica composite films possess high thermal decomposition temperature (Td > 550 ℃), high glass transition temperature (Tg > 265 ℃) as well as good shape fixation ratio (Rf > 98%) and shape recovery ratio (Rr > 90%). The mechanical properties, surface topography and shape memory performance of PI/silica composite films were evaluated before and after AO irradiation in simulated space environment. Compared to pristine PI, the mechanical properties, surface topography, and shape memory performances of PI-SiO2-15 were less affected by AO exposure, which results from the silica protective layer formed on the composite film surface, indicating good AO-resistant ability of PI/silica composite films. This work may provide a strategy toward the design of promising shape memory materials for applications in the field of severe conditions. |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the National Basic Research Program of China (973 Program, Grant No. 2015CB057502;the National Defense Innovation Fund of Chinese Academy of Sciences (CXJJ-14-M43);the National Natural Science Foundation of China (Grant 51305431) |
| 语种 | 英语 |
| WOS记录号 | WOS:000360552000062 |
| 源URL | [http://210.77.64.217/handle/362003/18597]  |
| 专题 | 兰州化学物理研究所_先进润滑与防护材料研究发展中心 兰州化学物理研究所_固体润滑国家重点实验室 |
| 通讯作者 | Wang QH(王齐华) |
| 作者单位 | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang ZH,Wang QH,Bai YK,et al. AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties[J]. RSC ADVANCES,2015,5(89):72971-72980. |
| APA | Yang ZH,Wang QH,Bai YK,Wang TM,&王齐华.(2015).AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties.RSC ADVANCES,5(89),72971-72980. |
| MLA | Yang ZH,et al."AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties".RSC ADVANCES 5.89(2015):72971-72980. |
入库方式： OAI收割
来源：兰州化学物理研究所
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。