Abstract: Elastomeric modified cast double base (EMCDB) propellant, which has good mechanical properties and plateau burning effect, was successfully prepared by granule casting process. The design consideration of EMCDB propellant’s compositions, the reasons for the propellant with very low pressure exponent, the characteristics of the propellant’s mechanical properties, and the effect of Pb salt and Cu salt on the propellant’s mechanical properties were thoroughly analyzed and studied. It was found that the granule casting process has an advantage over silt casting process.

Key words: Modified double base propellant;Pouring double base propellant;Prapellant casting;Burning rate;Mechanical performance

摘要： 用粒铸工艺制备出了力学性能好、具有燃烧平台的改性双基弹性体 (EMCDB)推进剂。介绍了粒铸EMCDB推进剂基础配方的设计思想 ,研究了铅、铜盐对粒铸EMCDB推进剂性能的影响 ,并分析了粒铸EMCDB推进剂具有较低的燃速压强指数的原因 ,讨论了粒铸EMCDB推进剂的力学性能特点 ,说明粒铸工艺在调节推进剂性能方面具有很大优势。

关键词: 改性双基推进剂;浇注双基推进剂;推进剂浇注;燃速;力学性能