| 赵春晴,刘宇明,聂翔宇,张永泰,丁义刚,沈自才.星用热缩套管力学性能钴源辐照效应研究[J].装备环境工程,2016,13(4):180-184. ZHAO Chun-qing,LIU Yu-ming,NIE Xiang-yu,ZHANG Yong-tai,DING Yi-gang,SHEN Zi-cai.60Co Radiation Effects on the Mechanical Properties of Heat-shrinkable Sleeves for Satellites[J].Equipment Environmental Engineering,2016,13(4):180-184. |
| 星用热缩套管力学性能钴源辐照效应研究 |
| 60Co Radiation Effects on the Mechanical Properties of Heat-shrinkable Sleeves for Satellites |
| 投稿时间：2016-03-01 修订日期：2016-08-15 |
| DOI：10.7643/ issn.1672-9242.2016.04.029 |
| 中文关键词: 热缩套管 力学性能 辐照 γ射线 |
| 英文关键词:heat-shrinkable sleeve mechanical property irradiation γ rays |
| 基金项目: |
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| Author | Institution |
| ZHAO Chun-qing | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
| LIU Yu-ming | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
| NIE Xiang-yu | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
| ZHANG Yong-tai | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
| DING Yi-gang | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
| SHEN Zi-cai | Beijing Institute of Spacecraft Environment Engineering, Beijing 100094, China |
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| 中文摘要: |
| 目的 研究星用热缩套管的力学性能（断裂伸长率和拉伸强度）在空间辐射环境中的退化情况。方法 利用钴源放射的γ射线模拟地球轨道粒子辐照环境，通过表面形貌分析、辐解气体分析、X射线光电子能谱分析、红外光谱分析等多种手段分析热缩套管力学性能退化的原因。结果 辐照后热缩套管颜色变深，力学参数出现严重退化现象。在最大辐照剂量下，材料断裂伸长率由414.3%下降为0.06%，拉伸强度由17.43 MPa下降为2.15 MPa，热缩套管原有力学性能几乎完全丧失。结论 热缩套管主链出现断链现象，生成可挥发的CO2，CH4等气体，从而导致样品力学性能严重退化。 |
| 英文摘要: |
| Objective To research the degradation of the mechanical properties (elongation at break and tensile strength) of heat-shrinkable sleeves for satellites in the spatial radiation environments. Methods The reason for the degradation of mechanical properties of the heat-shrinkable sleeves was analyzed in the simulated earth’s orbit particle radiation environment with γ rays radiated by 60Co through various means, such as surface topography analysis, radiolysis gas analysis and infrared spectrum analysis with X-ray photoelectron spectroscopy, etc. Results The result indicated that the color of the heat-shrinkable sleeves became darker after being radiated and there was obvious degradation of the mechanical properties. The elongation at break of the materials degraded from 414.3% to 0.06%, and the tensile strength degraded from 17.43 MPa to 2.15 MPa at the maximum radiation. The original mechanical properties of the heat-shrinkable sleeves were almost completely lost. Conclusion The main chain of heat-shrinkable sleeve is broken and volatile gases CO2 and CH4, etc. are generated, which causes the degradation of the mechanical properties. |
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