松弛谱表征NEPE推进剂的老化

推进技术 ›› 2013, Vol. 34 ›› Issue (7): 991-996.

松弛谱表征NEPE推进剂的老化

万谦¹,隋欣¹,张鹏峰²,王宁飞¹

北京理工大学宇航学院,北京 100081;北京理工大学宇航学院,北京 100081;海军驻航天三院军事代表室,北京 100074;北京理工大学宇航学院,北京 100081

发布日期:2021-08-15
作者简介:万谦(1975—),男,博士生,研究领域为固体推进剂寿命预估。E-mail:swan@bit.edu.cn通讯作者:隋欣(1979—),女,博士,副教授,研究领域为固体推进剂寿命预估及力学性能分析。E-mail:suixin@bit.edu.cn
基金资助:
国家自然科学基金(11072032)。

Description of Aging Properties of NEPE Propellants by Continuous Relaxation Time Spectrum

School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China;Naval Military Representative Office in The Third Research Academy, Beijing 100074, China;School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, China

Published:2021-08-15

摘要/Abstract

摘要： 为研究NEPE推进剂的老化情况,探讨了运用连续松弛谱表征NEPE推进剂老化进程的方法。分别对在80℃,75℃,70℃,65℃下加速老化的NEPE推进剂进行动态力学分析试验,数据表明,NEPE推进剂的连续松弛谱可以直观全面表征推进剂高分子多层结构的粘弹性特性,且同一加速老化温度下随老化时间增加动态粘弹性连续松弛谱频率分布范围逐步收窄,结合推进剂老化机理分析,该变化趋势可以表征推进剂老化进程。 

关键词: 连续松弛谱;时温等效原理;NEPE推进剂;老化 

Abstract: This paper discussed the use of continuous relaxation spectrum to characterize the aging process of NEPE propellants. Dynamic mechanics was tested after the propellant was accelerated aging at 80℃, 75℃, 70℃ and 65℃. Data shows that continuous relaxation spectrum can intuitive fully characterize the polymer multilayer structure of NEPE propellant. At the same accelerated aging temperature, the distribution range of continuous relaxation spectrum narrows over time. Analyzed with the aging mechanism of NEPE propellant, this trend can be used to characterize the aging process of NEPE propellants. 

Key words: Continuous relaxation spectrum; Time-temperature superposition principle;NEPE propellants;Aging

万谦,隋欣,张鹏峰,王宁飞. 松弛谱表征NEPE推进剂的老化[J]. 推进技术, 2013, 34(7): 991-996.

WAN Qian¹, SUI Xin¹, ZHANG Peng-feng², WANG Ning-fei¹. Description of Aging Properties of NEPE Propellants by Continuous Relaxation Time Spectrum[J]. Journal of Propulsion Technology, 2013, 34(7): 991-996.

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