摘要
红外探测器作为红外地球敏感器的核心元件之一,其性能直接影响卫星姿态控制精度。为保证探测器工作的稳定性和可靠性,对探测器密封性要求较高。选取几种空间常用密封胶进行参数比对和挥发性检测,优选出8361M-UV胶,并基于紫外(UV)光固化原理和特点进行密封工艺试验,试验内容包括密封胶固化参数选择、壳体密封工艺确定以及空间环境适应性验证等。结果表明,使用该密封胶及密封工艺,可以使红外探测器漏率≤5.0×10^(-5)Pa·L/s,经过力学、热循环、真空等空间环境试验考核后,达到漏率≤5.0×10^(-5)Pa·L/s的样品比例高达100%,可以满足该类型红外探测器的任务要求。另外,经过加严环境试验考核后,达到漏率≤5.0×10^(-5)Pa·L/s的样品比例仍高达96%。证明该密封胶及其工艺在满足任务需求前提下,具有一定的可靠性设计安全裕度。
Infrared detectors are crucial for the precision of satellite attitude measurements by infrared earth sensors.Ensuring their stable and reliable operation requires high sealing performance.This study compared parameters and examined the volatility of various space adhesives,selecting 8361M-UV adhesive based on its UV light curing principle and characteristics for sealing process testing.The experiments included selecting adhesive curing parameters,determining the shell sealing process,and verifing space environmental adaptability.The results indicate that the selected adhesive and sealing process achieve a leakage rate of no more than 5.0×10^(-5) Pa·L/s.Following space environmental tests,including mechanical,thermal cycling,and vacuum tests,all fifty samples maintained a leakage rate below the 5.0×10^(-5)Pa·L/s threshold,meeting the sealing requirements for this type of infrared detector.Rigorous subsequent testing showed that 96%of samples still met the leakage rate standard,demonstrating the safety margin and reliability design of the adhesive and its sealing process.
作者
李慧
李连升
杨宇
田广
徐庆安
邵逸恺
刘旭力
LI Hui;LI Liansheng;YANG Yu;TIAN Guang;XU Qing’an;SHAO Yikai;LIU Xuli(Beijing Institute of Control Engineering,Beijing 100094,China)
出处
《航天器环境工程》
CSCD
2024年第6期766-773,共8页
Spacecraft Environment Engineering
基金
国家自然科学基金项目(编号:12175294)。
关键词
红外探测器
密封胶
挥发性检测
密封工艺试验
空间环境试验
infrared detector
adhesive
volatility examination
sealing process testing
space environmental test
