PBT基少烟推进剂配方性能研究  

Properties of reduced smoke propellant formulation based on PBT

作　　者：张习龙 甘露 邓安华 牛草坪 庄容 ZHANG Xilong;GAN Lu;DENG Anhua;NIU Caoping;ZHUANG Rong(Hubei Sanjiang Aerospace Jianghe Chemical Technology Co.,Ltd.,Yuanan 444200,China)

机构地区：[1]湖北三江航天江河化工科技有限公司,远安444200

出　　处：《固体火箭技术》2021年第1期69-74,共6页Journal of Solid Rocket Technology

摘　　要：针对固体火箭发动机用高能量、低特征信号推进剂发展需求,以3,3-二叠氮甲基氧丁烷与四氢呋喃共聚醚(PBT)为粘合剂、双(2,2-二硝基丙醇)缩甲醛和双(2,2-二硝基丙醇)缩乙醛等质量比的混合物(A3)为增塑剂,采用降低推进剂配方中铝粉(Al)含量、用奥克托金(HMX)部分取代氧化剂等方式,开展了PBT基少烟推进剂配方工艺性能、力学性能、燃烧性能、烟雾特性以及能量性能研究。结果表明,PBT少烟推进剂的药浆粘度低、工艺性能良好,当固化参数为1.30,键合剂用量为0.30%时,推进剂的高温抗拉强度为0.511 MPa,常温、高温、低温伸长率均大于40%,推进剂在3~11 MPa的静态燃速压强指数为0.408,可见光透过率、红外透过率和激光透过率均大于70%,6.86 MPa下实测比冲为250.4 s,比冲效率为95.9%。In view of the development requirements of high energy and low characteristic signal propellant for solid rocket motor,using 3,3-diazomethyloxybutane and tetrahydrofuran copolyether(PBT)as binders,and mixture of equal mass ratio of bis(2,2-dinitropropanol)formaldehyde and bis(2,2-dinitropropanol)acetaldehyde(A3)as plasticizer.The processing properties,mechanical properties,combustion properties,smoke characteristics and energy properties of PBT based reduced smoke propellant formulation were studied by reducing the content of aluminum powder(Al)in the propellant formula,and using HMX to partially replace oxidant.The results show that the slurry of PBT reduced smoke propellant has low viscosity and good processing properties.When the curing parameter is 1.30 and the amount of bonding agent is 0.30%,the high temperature tensile strength of PBT reduced smoke propellant is 0.511 MPa,and the elongation at normal temperature,high temperature and low temperature are all more than 40%.The static pressure index of propellant is 0.408 in the working pressure range from 3 MPa to 11 MPa,and the visible light transmittance,infrared transmittance and laser transmittance are all more than 70%,and the measured specific impulse is 250.4 s under 6.86 MPa,its efficiency is 95.9%.

关 键 词：PBT 少烟推进剂 力学性能 燃烧性能 烟雾特性 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]