2/1樟单基发射药的真空与非真空环境安定性试验可替代性研究

The Study of Test Environment Replacement for Stability Evaluation of 2/1 Single-based Gun Propellant

基于深空探测用单基发射药在外太空中要经受长时间真空、温度交变等复杂的太空环境,而现有标准的安定性评估方法对其不适用的情况,设计了2/1樟单基发射药在75℃高温真空和非真空条件下的对比试验,测试双环境应力下药剂的安定剂含量、热分解性能及药剂成分等安定性敏感参量。结果表明:在试验周期10d内,药剂在75℃真空和非真空的试验环境下,其二苯胺含量、分解温度和氮含量等参数无显著性差异。本研究可为单基发射药在复杂多变环境下的安定性评估提供参考。

Based on the situation that the single-based gun propellants used for deep space exploration always suffer from complex space environments,such as long-term vacuum,high and low temperature alternation in outer space,while the existing stability evaluation standards are not applicable,the vacuum and atmospheric pressure experiments at 75℃were designed to investigate the sensitive parameters of stability such as stabilizer percentage,thermal decomposition properties and ingredients of the testing samples.The results show that there is no apparent difference for the percentage of diphenylamine,decomposition temperature and nitrogen content in the testing gun propellants stored in vacuum or atmospheric pressure environment at 75℃for 10 days.The study can provide some reference for the study of single-based gun propellant stability evaluation in complex and changeable environments.