| 空间辐射对甲基苯基乙烯基硅橡胶胶料性能的影响 |
| Effect of Space Radiation on Properties of MPVQ compound |
| 投稿时间：2023-10-18 修订日期：2023-10-18 |
| DOI：10.12136/j.issn.1000-890X.2024.08.0577 |
| 中文关键词: 甲基苯基乙烯基硅橡胶 空间辐射 拉伸强度 撕裂强度 |
| 英文关键词: MPVQ space radiation tensile strength tear strength |
| 基金项目: |
|
| 摘要点击次数: 450 |
| 全文下载次数: 341 |
| 中文摘要: |
| 研究空间辐射对甲基苯基乙烯基硅橡胶（MPVQ）胶料性能的影响。结果表明：随着辐射剂量的增大，MPVQ胶料的外观颜色呈现白-淡黄-灰黄的变化趋势，硬度增大，拉伸强度和撕裂强度曲线呈S型变化；当辐射剂量为1×106 Gy（Si）时，MPVQ胶料的拉伸强度、拉断伸长率和撕裂强度分别减小20%，89%和69%，当辐射剂量大于1×106 Gy（Si）时，MPVQ胶料的拉伸强度和撕裂强度出现一定程度反弹，随着辐射剂量的进一步增大，MPVQ胶料的拉伸强度和撕裂强度回落，而MPVQ胶料的拉断伸长率始终呈下降趋势；MPVQ制品基本满足静态运行航天器15年的运行寿命要求，但最终MPVQ制品的弹性和承力能力基本丧失，在外力作用下易脆裂，MPVQ制品不宜应用于裸露在空间环境中的长寿命航天器动态机构中。 |
| 英文摘要: |
| Effect of space radiation on the properties of methylphenyl vinyl silicone rubber （MPVQ） was studied.The results showed that with the increase of irradiation dose，the appearance color of MPVQ compound presented a change trend of white-light yellow-gray yellow，the hardness increased，and the tensile strength and tear strength curves presented an S shape.When the radiation dose was 1×106
Gy（Si），the tensile strength，elongation at break and tear strength of MPVQ compound decreased sharply by 20%，89% and 69% respectively. When the radiation dose was greater than 1×106 Gy（Si），the tensile strength and tear strength of MPVQ compound rebounded to a certain extent.As the radiation dose further increased，the tensile strength and tear strength of MPVQ compound falled back.The elongation at break always showed a downward trend.MPVQ products basically met the 15 year operational life requirment of static operation spacecraft，but in the end the elasticity and load-bearing capacity of MPVQ products were basically lost，they were prone to fragmentation under external forces.MPVQ products were not suitable for use in long-life spacecraft dynamic mechanisms exposed to space environments. |
|
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
