【摘要】 用热塑性聚氨酯弹性体(TPU)通过溶液水悬浮法对CL-20晶体进行了包覆,研究了TPU包覆CL-20后对改性双基推进剂(CMDB)的机械感度、燃烧性能及力学性能的影响。研究表明,TPU包覆CL-20后,使CMDB推进剂摩擦感度降低了67%,撞击感度降低了49%;燃速提高了14%;高、低、常温下的抗拉强度分别提高了30%以上。更多还原

【Abstract】 CL-20 crystal was coated by thermoplastic polyurethane elastomer(TPU) using water suspension method. The influence of the coated CL-20 on mechanical sensitivity, combustion property and mechanical properties of composite modified double-base(CMDB) propellant were investigated. Results showed that the friction sensitivity is reduced by 67% and the impact sensitivity is decreased by 49%, the burning rate is increased by 14%. Meanwhile, the tensile strength is increased by more than 30% at all under low, normal and high temperature condition.更多还原