论文部分内容阅读
为获得高能低感复合含能材料,以奥克托今(HMX)为主体炸药,采用超临界CO2法对HMX表面进行包覆改性。通过改变系统温度、系统压力、平均升压速率、平均降压速率、溶液浓度等参数,探讨了各因素对包覆效果的影响,并对包覆后的样品进行了撞击感度测试。结果表明,当系统温度为303K、系统压力为8.5MPa、平均升压速率为3.0MPa/min、乙酸乙酯体积为20mL、平均降压速率为4.0MPa/min时,超临界CO_2法包覆HMX效果最好;包覆后样品撞击感度的特性落高H_(50)比原料HMX(H_(50)=24.2cm)提高了14.3cm。
In order to obtain high energy and low energy composite energetic materials, HMX was used as the main explosive, and the surface of HMX was modified by supercritical CO2. By changing the parameters of system temperature, system pressure, average pressure-rise rate, average depressurization rate and solution concentration, the influence of various factors on the coating effect was discussed. The impact sensitivity of the coated sample was tested. The results show that when the system temperature is 303K, the system pressure is 8.5MPa, the average pressure-raising rate is 3.0MPa / min, the volume of ethyl acetate is 20mL and the average depressurization rate is 4.0MPa / min, The best effect was achieved. The drop of H_ (50) in the impact sensitivity of the coated sample was 14.3cm higher than that of the original HMX (H_ (50) = 24.2cm).