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采用一定实验条件下的TGA实验,对不同含硼富燃料推进剂发火温度进行测试,以验证方法的可靠性,并在此基础上,研究了初始温度、升温速率、装药量和坩埚等实验条件,以及配方对此方法测定的发火温度的影响。实验结果表明,采用TGA对含硼富燃料推进剂的发火温度进行测试具有较高的精确度,实验结果的通用性也较高;初始温度及升温速率基本不影响此方法测得的推进剂的发火温度;与氩气气氛相比,空气气氛下的含硼富燃料推进剂发火温度降低;在使用高压坩埚的情况下,推进剂的实测发火温度降低;使用HMX代替含硼富燃料推进剂中的AP、使用镁作为金属添加剂,以及增加推进剂中硼粉的含量,都能降低含硼富燃料推进剂的发火温度。
TGA experiments under certain experimental conditions were used to test the firing temperature of different boron-containing fuel-rich propellants to verify the reliability of the method. On the basis of this, the initial temperature, heating rate, charge and crucible experiments were studied Conditions, and the influence of the recipe on the ignition temperature determined by this method. The experimental results show that using TGA to test the ignition temperature of boron-rich fuel propellants has high accuracy and the experimental results have high versatility. The initial temperature and the heating rate do not affect the propellants Ignition temperature; ignition temperature of boron-rich fuel-rich propellant in air atmosphere is reduced compared to argon atmosphere; measured ignition temperature of propellant is reduced in case of high-pressure crucible; HMX is used instead of boron-rich fuel-rich propellant Of APs, using magnesium as a metal additive, and increasing the amount of boron powder in the propellant, can reduce the firing temperature of boron-rich fuel-based propellants.