Bu–NENA/(BDNPA/F)复合增塑聚醚推进剂性能研究  

Research on performance of Bu-NENA/(BDNPA/F) composite plasticized polyether propellant

作　　者：王旭波 沈兆宏 张英杰 赵军 孙庆锋 Wang Xubo;Shen Zhaohong;Zhang Yingjie;Zhao Jun;Sun Qingfeng(Shanghai Space Propulsion Technology Research Institute,Huzhou 313000,China)

机构地区：[1]上海航天动力技术研究所

出　　处：《化学推进剂与高分子材料》2018年第6期51-55,共5页Chemical Propellants & Polymeric Materials

摘　　要：利用N-n-丁基-N-（2-硝氧乙基）硝胺（Bu-NENA）增塑剂能量高、玻璃化转变温度低的优点，用它与双（2，2-二硝基丙基）缩乙醛／缩甲醛（BDNPA／F）协同增塑端羟基四氢呋喃-环氧乙烷无规共聚醚（PET）推进剂，所得推进剂在保证一定的力学性能的前提下，具有更高的能量、更低的玻璃化转变温度。研究结果表明：Bu-NENA部分取代BDNPA／F后，PET推进剂具有较好的力学性能；常温（20℃）抗拉强度0．956MPa，最大伸长率75．0％，BSF#118比冲提高5．4s；玻璃化转变温度低于-60℃；60℃老化12周后常温抗拉强度为0．651MPa，降低了39．8％，最大伸长率为52．1％，降低了28．0％。因此认为Bu-NENA／（BDNPA／F）协同增塑的PET推进剂将具有良好的应用前景。Utilizing the advantages of high energy and low glass transition temperature of N-n-butyl- N-（2-nitroxyethyl） nitramine （Bu-NENA） plasticizer, the hydroxyl-terminated tetrahydrofuran-ethylene oxide random copolyether （PET） propellant was synergistically plasticized by using Bu-NENA and bis （2,2-dinitropropyl） acetal/formal （BDNPA/F）. The obtained propellant possesses higher energy and lower glass transition temperature under the premise of ensuring certain mechanical performance. The research results show that after partially replacing BDNPA/F with Bu-NENA, the PET propellant possesses better mechanical performance. The tensile strength at normal temperature （20℃） is 0.965 MPa, the maximum elongation is 75.0%, the BSF^II8 specific impulse increases by 5.4 s, the glass transition temperature is lower than -60 %. After aging at 60℃ for 12 weeks, the tensile strength at normal temperature is 0.651 MPa, decreases by 39.8%, the maximum elongation is 52.1%, decreases by 28.0%. Therefore, it is considered that the Bu-NENA/（BDNPA/F） synergistically plasticized PET propellant will possess good application prospects.

关 键 词：Bu-NENA 聚醚推进剂 能量 老化 

分 类 号：V512.3[航空宇航科学与技术—航空宇航推进理论与工程]