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制备了含3,6-双(1-氢-1,2,3,4-四唑-5-氨基)-1,2,4,5-四嗪(BTATz)铅复合物(LCBTATz)的双基(DB)推进剂和黑索今(RDX)-改性双基(CMDB)推进剂.采用热重-微商热重法(TG-DTG)及差示扫描量热法(DSC)研究了其热分解行为和非等温分解动力学,并在此基础上评价了其热安全性.结果表明,LCBTATz-DB复合物中在350-540 K之间只存在一个放热分解峰,LCBTATz-CMDB复合物中存在两个连续的放热分解峰,在390-540K温度范围内,其机理方程分别为:f(α)=α~(-1)/2和f(α)=2(1-α)~(3/2).计算了热加速分解温度(T_(SADT))、热爆炸临界温度(T_b)、热点火温度(T_(TIT))和绝热至爆炸时间(t_(Tlad)),其值分别为:DB001复合物,T_(SADT)=444.50 K,T_(TITT)=453.96 K,T_b=471.84 K;t_(Tlad)=39.36 s;CMDB100复合物,T_(SADT)=442.38 K,T_(TITT)=452.89 K,T_b=464.13 K,t_(Tlad)=21.3 s,并以此来评价化合物的热安全性.考察了LCBTATz-DB以及LCBTATz-CMDB的燃烧性能,结果表明LCBTATz是一种高效的双基燃烧催化剂,在较大的压力范围内可以显著提高燃速并且大幅度降低压力指数.对于双基推进剂在2-8 MPa压力范围内出现了明显的超燃速现象,8-12 MPa出现了“麦撒”效应,对于改性双基推进剂的压力指数降到0.18.
A bis (triphenylphosphine) bis (triphenylphosphine) bis (triphenylphosphine) -bis (1 -hydroxy- 1,2,3,4- tetrazolium-5-amino) -1,2,4,5- tetrazine (BTATz) lead complex (LCBTATz) (DB) propellants and RDX-CMDB propellants were investigated by TG-DTG and differential scanning calorimetry (DSC) Its thermal decomposition behavior and non-isothermal decomposition kinetics, and on the basis of which the thermal safety was evaluated. The results show that there is only one exothermic decomposition peak in the LCBTATz-DB complex between 350-540 K, LCBTATz-CMDB There are two continuous exothermic decomposition peaks in the complex, the mechanism of which is respectively in the temperature range of 390-540K: f (α) = α -1 / 2 and f α 2 = (T_ (SADT)), thermal explosion critical temperature (T_b), thermal ignition temperature (T TIT) and thermal insulation to explosion time (t Tl) (TADT) = 444.50 K, T TITT = 453.96 K, T_b = 471.84 K, tlad = 39.36 s, CMDB100 complex, T SADT = 442.38 K , T TITT = 452.89 K, T_b = 464.13 K, t Tlad = 21.3 s, and the thermal safety of the compounds was evaluated.The combustion properties of LCBTATz-DB and LCBTATz-CMDB were investigated and the results showed that LCBTATz was A high efficiency The birefringent catalyst can significantly increase the combustion rate and reduce the pressure index significantly over a wide range of pressures.Under the pressure range of 2-8 MPa, A “MEASUREMENT” effect appeared, and the pressure index for the modified double base propellant dropped to 0.18.