Extraordinary impact resistance of carbon nanotube film with crosslinks under micro-ballistic impact | |
Xiao KL(肖凯璐)1,2; Lei XD(雷旭东)1,2; Chen YY(陈昱羽)1,2; An Qi3,4; Hu Dongmei5; Wang C(王超)1; Wu XQ(吴先前)1; Huang CG(黄晨光)1,2 | |
发表期刊 | CARBON |
2021-04-30 | |
卷号 | 175页码:478-489 |
ISSN | 0008-6223 |
摘要 | The crosslinks of carbon nanotubes (CNT) film has been demonstrated to owing the ability to reinforce the quasi-static mechanical properties. But it is unclear whether crosslinks improve the ballistic impact resistance of CNT film. Here, we investigated the impact resistance of CNT film with crosslinks by combining micro-ballistic impact experiments with coarse-grained molecular dynamics (CGMD) simulations. The impact resistance is quantitatively characterized in terms of the specific penetration energy. Meanwhile, the effective enhancement of impact resistance contributed to the crosslinks is directly observed in the experiment. CGMD simulations are employed to unveil the corresponding mechanisms in terms of deformation behavior, energy dissipation mode, and failure behavior. Our results indicate that with the increase of crosslink density, the energy dissipation mode of the CNT film transforms from bending-dominated to stretching-bending-dominated due to enhanced interaction between the adjacent CNTs. This leads to a transformation of perforated morphology from cascaded interfaces sliding to crosslink-restricted deformation with crosslinks. Our simulations also indicate that the length, bending stiffness of CNTs, and film's thickness play essential roles in the impact resistance of CNT film at various crosslink densities. These results provide a feasible strategy to improve the protective performance of CNT film. (C) 2021 Elsevier Ltd. All rights reserved. |
关键词 | CNT films Crosslinks Ballistic impact Specific penetration energy Energy dissipation |
DOI | 10.1016/j.carbon.2021.01.009 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000626964000048 |
WOS研究方向 | Chemistry ; Materials Science |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
资助项目 | National Natural Science Foundation of China[11672315] ; National Natural Science Foundation of China[11972348] ; National Natural Science Foundation of China[11772347] ; Science Challenge Project[TZ2018001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB22040302] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB22040303] |
项目资助者 | National Natural Science Foundation of China ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences |
论文分区 | 一类 |
力学所作者排名 | 1 |
RpAuthor | wang c ; wu xq |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/86324 |
专题 | 流固耦合系统力学重点实验室 非线性力学国家重点实验室 |
通讯作者 | Wang C(王超); Wu XQ(吴先前) |
作者单位 | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Univ Nevada, Dept Chem & Mat Engn, Reno, NV 89557 USA; 4.Univ Nevada, Nevada Inst Sustainabil, Reno, NV 89557 USA; 5.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Key Lab Multifunct & Smart Syst, Suzhou 215123, Peoples R China |
推荐引用方式 GB/T 7714 | Xiao KL,Lei XD,Chen YY,et al. Extraordinary impact resistance of carbon nanotube film with crosslinks under micro-ballistic impact[J]. CARBON,2021,175:478-489. |
APA | Xiao KL.,Lei XD.,Chen YY.,An Qi.,Hu Dongmei.,...&Huang CG.(2021).Extraordinary impact resistance of carbon nanotube film with crosslinks under micro-ballistic impact.CARBON,175,478-489. |
MLA | Xiao KL,et al."Extraordinary impact resistance of carbon nanotube film with crosslinks under micro-ballistic impact".CARBON 175(2021):478-489. |
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