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为了解决传统固体复合推进剂端羟基-异氰酸酯固化体系对水敏感以及与ADN,B粉等新组分不相容的问题,使用端炔基化的环氧乙烷-四氢呋喃共聚醚(PTPET)-多叠氮化合物组成新的固化体系,制备了常规配方S1、含键合剂配方S2、含ADN配方S3和含B粉配方S4的复合推进剂,对其力学性能和燃烧性能进行了测试。结果表明,室温下S1~S4的拉伸强度和断裂伸长率分别为0.60MPa,15%;0.63MPa,31%;0.40MPa,24%;0.72MPa,124%。在低温(-40℃)下,S1~S4的拉伸强度和断裂伸长率分别为1.69MPa,>150%;2.10MPa,>149%;1.18MPa,>145%;2.10MPa,>149%。在高温(60℃)下,S1~S4的拉伸强度和断裂伸长率分别为0.47MPa,23%;0.49MPa,21%;0.32MPa,17%;0.57MPa,84%。S2~S4在4~8 MPa下的燃速压力指数分别为0.49,0.52,0.38。4MPa压力,Ar气气氛下,S1~S4的爆热分别为6669,6695,6350,7014kJ/kg。总结了燃速和爆热的关系方程式。
In order to solve the problem that the hydroxyl-isocyanate curing system of the traditional solid composite propellant is sensitive to water and incompatible with new components such as ADN and B powder, the terminal alkynylated ethylene oxide-tetrahydrofuran copolyether (PTPET) The mechanical properties and the combustion properties of the composite were tested by the combination of polyazide compounds and a new propellant system. Conventional formulation S1, compounding formulation S2, formulation S3 containing ADN and formulation S4 containing formula B were prepared. The results show that the tensile strength and elongation at break of S1 ~ S4 at room temperature are 0.60MPa, 15%, 0.63MPa, 31%, 0.40MPa, 24%, 0.72MPa, 124% respectively. The tensile strength and elongation at break of S1 ~ S4 were 1.69MPa,> 150%, 2.10MPa,> 149%, 1.18MPa,> 145%, 2.10MPa,> 149% at low temperature . The tensile strength and elongation at break of S1 to S4 at high temperature (60 ° C) were 0.47 MPa, 23%, 0.49 MPa, 21%, 0.32 MPa, 17%, 0.57 MPa, 84%, respectively. The pressure velocities of S2 ~ S4 at 4 ~ 8 MPa were 0.49, 0.52 and 0.38 MPa, respectively. The detonation temperatures of S1 ~ S4 in Ar gas were 6669,6695,6350,7014kJ / kg, respectively. Summarized the burning rate and detonation heat of the relationship equation.