含DNTF的改性双基推进剂燃烧性能

Combustion performance of DNTF-CMDB propellant

关键词:  固体火箭推进剂  改性双基推进剂  燃点  燃烧性能

Key words:  Solid rocket propellant  Modified double base propellant  Burning rate  Combustion performance

摘要:

研究了3,4-二硝基呋咱基氧化呋咱(DNTF)的含量、不同催化剂体系、炭黑的含量、DNTF的粒度对DNTF改性双基推进剂燃速和压强指数的影响。实验表明:DNTF含量为30%时,以含能铅盐、芳香铜盐和炭黑(CB)所组成的复合催化剂可使推进剂压强指数降为0.37(8~14MPa);而当DNTF的含量为50%时,所选用的三种催化剂体系(铅盐包括含能铅盐和芳香铅盐,铜盐为芳香铜盐)对推进剂的燃烧性能失去调节作用;炭黑含量的增加使推进剂的燃速增加,压强指数变大;DNTF的粒度对该推进剂的燃速影响明显,DNTF粒度较大时,燃速较高(53.19mm/s,16MPa),压强指数较大。

Abstract:

The factors affecting burning rate and pressure exponent of DNTF-CMDB propellant were studied,including the content of DNTF,the different catalyst systems,the contains of carbon black and the granularity of DNTF.The results show that when the content of DNTF is 30%,the pressure exponent of propellant can be decreased to 0.37 by the composite catalyst system of energetic lead salt,aromatic cuprum salt and carbon black in 8～14MPa.When the content of DNTF is 50%,the pressure exponent of propellant can not be suppressed by the composite catalyst system of common Pb-Cu-CB(including energetic lead salt and aromatic lead salt and aromatic cuprum salt).The burningrate and pressure exponent of propellant will increase with the increasing content of carbon black.The burningrate of propellant can be affected by the granularity of DNTF obviously.The larger granularity of DNTF is,the higher burningrate is(53.19mm/s,16MPa),and pressure exponent increases.