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| Mechanical Properties of Polyimide Fibers under the Irradiation of Space Charged Particles |
| Received:August 28, 2019 Revised:October 05, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.03.001 |
| KeyWord:polyimide fiber the irradiation of space charged particles the electron irradiation the proton irradiation the stress coupled irradiation effect mechanical properties |
| Author | Institution |
| JU Dan-dan |
Harbin Institute of Technology, Harbin , China |
| WANG Xin-min |
Harbin Institute of Technology, Harbin , China |
| SUN Cheng-yue |
Harbin Institute of Technology, Harbin , China |
| WANG Hao |
Harbin Institute of Technology, Harbin , China |
| WU Yi-yong |
Harbin Institute of Technology, Harbin , China |
| DONG Zhi-xin |
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun , China |
| LIU Gang |
Shanghai Institute of Satellite Equipment, Shanghai , China |
| PAN Yang-yang |
Shanghai Institute of Satellite Equipment, Shanghai , China |
| QIU Xue-peng |
Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun , China |
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| Abstract: |
| The paper aims to study the mechanical properties of polyimide fibers under electron irradiation, proton irradiation and stress-coupled proton irradiation. The polyimide fibers, which were prepared by the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, were irradiated by the space environment simulation equipment and the mechanical properties before and after irradiation were tested by XQ-1 fiber strength meter. Under the low energy electron irradiation, the tensile strength, modulus and elongation at break of polyimide fiber were all reduced, but the change was not significant; high energy electron irradiation would increase the modulus of the material; after proton irradiation, the tensile strength and the elongation at break of the material decreased significantly with the increase of the irradiation fluence; single application of 5% strain would cause a certain decrease in the tensile mechanical properties of the polyimide fiber. Compared to the single strained samples, the tensile strength and the elongation at break of the stress-coupled proton irradiated samples were further reduced; while compared to the single proton irradiated samples, the tensile strength and the elongation at break of the stress-coupled irradiated samples were higher. The effect of electron irradiation on the mechanical properties of polyimide fiber is weak whether it is under low-energy or high-energy; while the proton irradiation will greatly reduce the mechanical properties of the polyimide fibers. Adding the stress coupling effect will weaken the effect of proton irradiation on the mechanical properties of the polyimide fibers. |
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