Enhancing the dynamic temperature stability of epoxy with graphene oxide
文献类型：期刊论文
| 作者 | Qiao Y(乔宇) ; Wang PF; Xue X; Liu M; Xu SL
|
| 刊名 | MECHANICS OF MATERIALS
 |
| 出版日期 | 2020-11-01 |
| 卷号 | 150页码:103593 |
| ISSN号 | 0167-6636 |
| 关键词 | Dynamic behavior STRAIN-RATE Temperature effect MECHANICAL-PROPERTIES Strain rate STRESS-RELAXATION Hopkinson bar CRACK-PROPAGATION Graphene oxide ALUMINUM FOAM BEHAVIOR DEFORMATION NANOCOMPOSITES MODEL |
| DOI | 10.1016/j.mechmat.2020.103593 |
| 英文摘要 | Temperature-dependence mechanism of composites under dynamic loadings is essential for designing the aircraft with harsh operation environment. In this work, the dynamic compression mechanical behavior of graphene oxide modified epoxy (GO-epoxy) was systematically investigated over the temperature range from 298K to 423K under the loading strain rate of 5000 s(-1). The results indicate that the compression properties of GO-epoxy are sensitive to the strain rate and temperature. The yield strength of pure epoxy and GO-epoxy under dynamic loading were twice those under quasi-static loading. The strength gradually decreases as the temperature increases, but the temperature stability of GO-epoxy is significantly improved compared to the pure epoxy. The addition of GO helps to inhibit the movement of the molecular chain, suppress the stress softening, prevent the evolution of the micro-cracks and then increase the thermal stability of epoxy. The high speed photograph combined with the digital image correction (DIC) method indicates that GO improves the impact resistance of epoxy at different temperatures and the interfacial interactions contribute to this strengthening mechanism. A modified temperature and rate-dependent empirical constitutive model was developed to describe the dynamic behavior of pure/GO epoxy. The fracture morphologies show the difference failure modes between the GO-epoxy and the pure epoxy. This work on the temperature dependent dynamic behavior of GO modified epoxy could provide guidance for understanding the dynamic strengthening and thermal softening behaviors of nano-reinforcing composites. |
| 分类号 | 二类/Q1 |
| WOS研究方向 | Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000579506100024 |
| 资助机构 | National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11872361, 11672286} ; Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [WK2090050040, WK 2480000003} ; China Scholarship CouncilChina Scholarship Council |
| 其他责任者 | Wang, PF ; Xu, SL |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/85430]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.{Liu Mao} Swinburne Univ Technol Fac Sci Engn & Technol Hawthorn Vic 3122 Australia 2.{Qiao Yu} Chinese Acad Sci Inst Mech State Key Lab Nonlinear Mech Beijing 100190 Peoples R China 3.{Qiao Yu, Wang Pengfei, Xue Xiao, Xu Songlin} Univ Sci & Technol China Dept Modern Mech CAS Key Lab Mech Behav & Design Mat Hefei 230027 Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao Y,Wang PF,Xue X,et al. Enhancing the dynamic temperature stability of epoxy with graphene oxide[J]. MECHANICS OF MATERIALS,2020,150:103593. |
| APA | 乔宇,Wang PF,Xue X,Liu M,&Xu SL.(2020).Enhancing the dynamic temperature stability of epoxy with graphene oxide.MECHANICS OF MATERIALS,150,103593. |
| MLA | 乔宇,et al."Enhancing the dynamic temperature stability of epoxy with graphene oxide".MECHANICS OF MATERIALS 150(2020):103593. |
入库方式： OAI收割
来源：力学研究所
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