定应变下 NEPE推进剂化学老化性能研究

doi:10.13675/j.cnki.tjjs.190113

推进技术 ›› 2020, Vol. 41 ›› Issue (2): 447-454.DOI: 10.13675/j.cnki.tjjs.190113

定应变下 NEPE推进剂化学老化性能研究

董可海¹,孔令泽¹,裴立冠¹,陈思彤¹,唐岩辉¹

海军航空大学岸防兵学院，山东烟台 264001

发布日期:2021-08-15
基金资助:
武器装备预先研究项目基金（51328050101）。

Study on Chemical Aging Properties of NEPE Propellant under Constant Strain

College of Coast Defense Arm,Naval Aeronautical University, Yantai 264001, China

Published:2021-08-15

摘要/Abstract

摘要： 为研究NEPE推进剂老化对其化学性能的影响，开展了10%压缩定应变下推进剂高温加速老化实验，测定了推进剂的傅里叶变换红外光谱、固体核磁共振谱、短周期与长周期特征气体释放量、扫描电镜图像、增塑剂与安定剂含量，研究了推进剂内部化学结构和释放的特征气体含量两种化学性能的变化规律。结果表明：随NEPE推进剂贮存老化时间的增长，与增塑剂相关的—CH ₂—O—NO ₂基团含量减小速率逐渐加快，与粘合剂及其固化体系相关的—CO—NH—基团含量先增加后逐渐减小、最终迅速减小，同时在老化初期和中期还存在少量与氧化作用相关的—CH(O)CH—特征基团产生。短周期监测时间内，NO ₂,NO,CO,HCl四种特征气体分别在老化2,3,3,7h时被检测到。长周期监测过程中，CO和NO气体初期增长缓慢，后期迅速增加；在老化初期和后期HCl增长较快，NO ₂气体则无明显的变化规律可寻。

关键词: NEPE推进剂;定应变;化学老化;化学结构;特征气体

Abstract: A high temperature accelerated aging experiment of propellant under 10% compression constant strain was carried out, fourier transform infrared spectroscopy, solid state nuclear magnetic resonance spectrum, short and long period characteristic gas content, scanning electron microscope image and plasticizer and stabilizer contents were detected, and the internal chemical structures and characteristic gases contents of the propellant were studied to analyze the effects of NEPE propellant aging on its chemical properties. Results show that with the increase of storage aging time of NEPE propellant, the content reduction rate of —CH ₂—O—NO ₂ group, related to plasticizers, was getting faster, the —CO—NH— group, which is related to the binder and its curing system, increase first and then decrease gradually and finally decrease rapidly, and a lower amounts of —CH(O)CH— group related to oxidation is generated in the early and middle stages of aging. The short period detection results show NO ₂, NO, CO, and HCl were detected at 2, 3, 3, and 7 hours of aging. In the long period detection, the growths of CO and NO contents are initial slow and later increase rapidly, the HCl content grows faster in the early and late aging period, and there is no obvious law of NO ₂ content.

Key words: NEPE propellant;Constain strain;Chemical aging;Chemical structure;Characteristic gas

董可海,孔令泽,裴立冠,陈思彤,唐岩辉. 定应变下 NEPE推进剂化学老化性能研究[J]. 推进技术, 2020, 41(2): 447-454.

DONG Ke-hai¹,KONG Ling-ze¹,PEI Li-guan¹,CHEN Si-tong¹,TANG Yan-hui¹. Study on Chemical Aging Properties of NEPE Propellant under Constant Strain[J]. Journal of Propulsion Technology, 2020, 41(2): 447-454.

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定应变下 NEPE推进剂化学老化性能研究

Study on Chemical Aging Properties of NEPE Propellant under Constant Strain

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