2,4-二羟基苯甲酸铅铜盐对Al/RDX-CMDB推进剂燃烧性能的影响

摘要

为了研究2,4-二羟基苯甲酸铅铜盐（Pb/Cu-SDHB）单独或与其它催化剂复合后对含Al粉和黑索今（RDX）改性双基（Al/RDX-CMDB）推进剂燃烧性能的影响，采用吸收-压延方法制备了推进剂样品，用靶线法测试了推进剂燃速。结果表明：Pb/Cu-SDHB能有效调节推进剂燃烧性能，显著提高了Al/RDX-CMDB推进剂的燃速，并明显降低了压强指数；3.0%Pb/Cu-SDHB与0.65%炭黑复合后使Al/RDX-CMDB推进剂在10~15MPa的压强指数降低至-0.1，10MPa下燃速超过20mm/s。%In order to investigate the effects of lead/cupric salt of 2,4-dihydroxybenzoate(Pb/Cu-SDHB)itself, or composite with other catalysts on the combustion properties of Al/RDX-CMDB propellant, the propellant samples were prepared through a solventless extrusion technique, as well as the burning rate of propellants were measured by stand burner method .The results showed that Pb/Cu-SDHB could increase the burning rate and reduce the pressure exponent of Al/RDX-CMDB propellant notably. When 3.0%Pb/Cu-SDHB composited with 0.65%carbon, the pressure exponent of Al/RDX-CMDB propellant reduced to-0.1 under 10~15MPa, and the burning rate at 10MPa would exceed 20mm/s.