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

作　　者：王鹏 王儒华 苏建波 王楠 霍秀兵 刘宁 WANG Peng;WANG Ruhua;SU Jianbo;WANG Nan;HUO Xiubing;LIU Ning(Beijing Spacecrafts Manufacture Co.,Ltd,Beijing 100094,China;Beijing Research and Design Institute of Rubber Industry Co.,Ltd,Beijing 100043,China)

机构地区：[1]北京卫星制造厂有限公司,北京100094 [2]北京橡胶工业研究设计院有限公司,北京100043

出　　处：《橡胶工业》2024年第8期577-582,共6页China Rubber Industry

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形变化;当辐射剂量为1×10^(6)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1×10^(6)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。The 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 the MPVQ compound presented a changing 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 1×10^(6)Gy(Si),the tensile strength,elongation at break and tear strength of the MPVQ compound decreased by 20%,89%and 69%respectively.When the radiation dose was greater than 1×10^(6)Gy(Si),the tensile strength and tear strength of the MPVQ compound rebounded to a certain extent.As the radiation dose further increased,the tensile strength and tear strength of the MPVQ compound fell back.The elongation at break always showed a downward trend.The MPVQ products basically met the 15-year operational life requirements of static operation spacecraft,but in the end the elasticity and load-bearing capacity of the MPVQ products were basically lost,making them prone to fragmentation under external forces.The MPVQ products were not suitable for use in dynamic mechanisms of long-life spacecraft exposed to space environments.

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 

分 类 号：TQ333.93[化学工程—橡胶工业]