J312L结构胶空间辐射环境适应性研究  

Research on Space Irradiation Environment Adaptability of J312L Structural Adhesive

作　　者：张静静[1] 朱旭斌[2] 李岩[1] 高鸿[1] 邢焰[1] ZHANG Jingjing;ZHU Xubin;LI Yan;GAO Hong;XING Yan(China Academy of Space Technology,Beijing 100094;China Academy of Aerospace Standardization and Product Assurance,Beijing 100071)

机构地区：[1]中国空间技术研究院,北京100094 [2]中国航天标准化与产品保证研究院,北京100071

出　　处：《宇航材料工艺》2023年第2期129-135,共7页Aerospace Materials & Technology

摘　　要：为考察空间辐射环境对J312L结构胶性能的影响,通过电子扫描电镜(SEM)、傅里叶红外光谱(FT-IR)、X射线光电子能谱(XPS)、热重分析仪(TGA)、差示扫描量热仪(DSC)、真空出气和力学性能测试,研究了辐射对J312L结构胶的微观形貌、分子结构、耐热特性、污染特性和力学性能的影响,并对材料辐射老化机制进行了分析。结果表明总剂量辐射对J312L结构胶耐热、真空污染和力学特性影响显著。1.5×10^(9)rad(Si)60Co γ射线辐射后胶黏剂拉伸剪切强度为4.8 MPa,真空总质量损失(TML)为2.36%。与初始相比,玻璃化转变温度和5%热分解温度分别降低了31和84℃,表明高剂量作用下胶黏剂以辐射降解为主。To investigate the influence of space irradiation on the properties of J312L structural adhesive,micromorphology,molecular structure,heat resistance,vacuum pollution and mechanical properties of J312L were analyzed by SEM,FT-IR,XPS,TGA,DSC,vacuum outgassing and mechanical test.The irradiation aging mechanism of material was investigated.The results show that the total dose irradiation has a significant effect on the thermal stability,vacuum outgassing and mechanical properties of J312L adhesive.After 1.5×10^(9) rad(Si)γ-ray irradiation from 60Co,the tensile shear strength is 4.8 MPa,and the total vacuum mass loss(TML)is 2.36%.Compared to that of the initial,the glass transition temperature and the thermal decomposition temperature(Td 5%)are reduced by 31℃and 84℃,respectively,indicating that the J312L adhesive is dominated by the degradation reactions within high-dose radiation.

关 键 词：航天器 结构胶 辐射 环境适应性 

分 类 号：V45[一般工业技术—材料科学与工程]