纳米氧化铁对HTPB推进剂性能影响  

Effect of Nano-ferric-oxide on HTPB Propellant Performance

作　　者：刘长宝[1] 刘学[1] 胡期伟[1] 李彦荣[1] 

机构地区：[1]中国航天科技集团公司四院42所,湖北襄阳441003

出　　处：《含能材料》2012年第6期744-747,共4页Chinese Journal of Energetic Materials

摘　　要：制备了四种不同形貌的纳米氧化铁Ⅰ-Ⅳ和5种9～14/65～70/17/3/1-粘合剂/AP/Al/二茂铁/普通氧化铁或纳米氧化铁Ⅰ-Ⅳ推进剂(HTPB推进剂)。研究了纳米氧化铁对HTPB推进剂力学性能、燃烧特性、安全性能的影响。结果表明,纳米氧化铁Ⅱ是四种纳米氧化铁中效果最好的催化剂,含纳米氧化铁Ⅱ配方推进剂,在25℃条件下,最大抗拉强度为0.83 MPa,最大伸长率60.0%,-40℃条件下,最大抗拉强度为2.00 MPa,最大伸长率45.0%;6.86 MPa压强下,燃速为43.24 mm.s-1,压强指数为0.27;药浆50%爆炸的临界撞击能大于14 J,摩擦感度小于80%,安全性能与含普通氧化铁配方相当。Four kinds of nano- ferric-oxide I-IV with different appearance and five kinds of 9 -14/65-70/17/3/1-adhesive /AP/ Al/ferrocence/ordinary ferric-oxide or nano-ferric-oxide I-IV propellants （HTPB propellant） were prepared. The effect of nano-ferric-oxide on the mechanical performances, combustion characteristics and safety properties of HTPB propellant were studied. Results show that nano-ferric-oxide II is the best catalyst of the four kinds of nano-ferric-oxide. At 25℃, the maximum tensile strength of HTPB propellant with nano-ferric-oxide II is about 0.83 MPa and its maximum elongation reaches 60%. At -40 ℃, its maximum tensile strength is about 2.00 MPa and the maximum elongation reaches 45%. The burning rate at 6.86 MPa is 43.24 mm/s and the pressure exponent is0.27. The critical impact energy of 50% explosive （I50） of the propellant slurry is greater than 14 J and the friction sensitivity is less than 80%, indicating that the safety properties of the propellant are same as those of the propellant with ordinary ferric-oxide.

关 键 词：应用化学 HTPB推进剂 纳米氧化铁 力学性能 燃烧性能 安全性能 

分 类 号：V512[航空宇航科学与技术—航空宇航推进理论与工程]