| AO-resistant shape memory polyimide/silica composites with excellent thermal stability and mechanical properties | |
| Department | 先进润滑与防护材料研究发展中心 |
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)
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| 2015 | |
| Source Publication | RSC ADVANCES
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| ISSN | 2046-2069 |
| Volume | 5Issue:89Pages:72971-72980 |
| Abstract | 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. |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1039/c5ra12293g |
| Funding Organization | 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) |
| Indexed By | SCI |
| If | 3.289 |
| Language | 英语 |
| Funding Project | 聚合物自润滑复合材料组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18597 |
| Collection | 中国科学院材料磨损与防护重点实验室/先进润滑与防护材料研究发展中心 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang QH(王齐华) |
| Affiliation | 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 |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| AO-resistant shape m（1546KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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