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寻找合适的混合方式将端羟基四氢呋喃环氧乙烷共聚醚(PET)共混于端羟基聚丁二烯(HTPB)推进剂中,研究PET黏合剂和BDNPA/F(双(2,2–二硝基丙醇)缩乙醛/双(2,2–二硝基丙醇)缩甲醛)增塑剂对HTPB推进剂力学性能和燃烧性能的影响。结果表明:采用二步聚合法可将PET加入HTPB推进剂中,推进剂具有较好的工艺性能和力学性能;PET的加入能明显降低推进剂的燃速和压强指数;同时,极性黏合剂的加入有助于引入含能增塑剂BDNPA/F。
In order to find a suitable mixing method, the hydroxyl-terminated polytetramethylene oxide (PET) was blended into the hydroxyl-terminated polybutadiene (HTPB) propellants to study the effects of PET binders and BDNPA / F Nitropropanol) acetal / bis (2,2-dinitropropanol) formal) plasticizer on the mechanical properties and combustion properties of HTPB propellants. The results show that PET can be added to HTPB propellant by two-step polymerization method. The propellants have good process and mechanical properties. The addition of PET can significantly reduce the burning rate and pressure index of propellants. At the same time, The addition helps to introduce BDNPA / F which is a kind of plasticizer.