含有5-氨基四唑的GAP/AN基推进剂的研究

摘要

Glycidyl azide/ammonium nitrate (GAP/AN)based propellant containing 5-aminotetrazole(5-AT) was prepared by flow casting technology to investigate the effect of 5-AT on propellants.Energy characteristics of the propellant containing 5-AT were calculated by the least free energy method,mechanical properties were tested by tensile test,burning rates were measured by the method of target lines,and sensitivities were also studied.Results show that,production of N2 is significantly increased by adding 5-AT,but both of the theoretical specific and combustion temperature decrease with the increase of 5-AT at high content of matrix composition.Compared with GAP/AN based propellant,the burning pressure exponent for propellant significantly decreases by 0.2 when the content of 5-AT is 10％,while burning rate increases by 15.3％ at the pressure of 9 MPa.The elongation of the propellant containing 5-AT increases,but the tensile strength decreases by 57.7％.Moreover,GAP/AN based propellant containing 5-AT becomes more sensitive to impact or friction stimulation.%为探索5-氨基四唑(5-AT)对推进剂性能的影响,采用浇铸工艺制备了含5-AT的聚叠氮基缩水甘油醚/硝酸铵(GAP/AN)基推进剂试样,通过最小自由能法计算了其能量性能,通过静态力学拉伸试验测试其力学性能,通过靶线法表征其燃烧性能,并测试了其机械感度.结果表明,5-AT的加入可以显著提高燃气中N2的生成量,但当GAP/增塑剂(A3)的含量较大时,理论比冲及爆温均随着5-AT含量的增加逐渐减小;与GAP/AN推进剂相比,添加质量分数为10％的5-AT后,推进剂的燃速压力指数显著降低0.2,9 MPa下燃速提高了15.3％;推进剂断裂伸长率增加,但拉伸强度下降了57.7％,且机械感度升高.