环境含氧量对液固混合FAE能量释放特性影响研究

为研究环境含氧量对液固混合FAE能量释放特性的影响,依据量热法原理测量了试样在不同含氧量下的爆热,同时在密闭条件下利用PCB压力传感器测量了试样在不同含氧量下的准静态压力,结合傅里叶变换红外光谱仪对爆轰气体产物进行了检测和验证。试验结果表明:随着氧气含量的增加,试样爆热值逐渐增加,爆轰气体产物中CO和CO₂含量逐渐增加; HCN含量先增加后迅速下降,CH₄的含量逐渐下降; 在标准状况和氧气条件下,试样的准静态压力分别为0.255 MPa和0.310 MPa。结果表明:随着环境含氧量的增加,试样的氧化性逐渐增强,同时释放出更多的能量,大幅提高了液固混合FAE爆炸的能量释放率。

Effect of Oxygen Content on Energy Release Characteristics of Liquid-solid Mixed FAE

In order to investigate the effect of oxygen content on energy release characteristics of liquid-solid mixed fuel air explosive ( FAE ) , the isothermal calorimeter and closed explosion system were developed respectively. The detonation heat of FAE under different oxygen content was tested by the calo-rimetric method,and the quasi-static pressure of FAE under different oxygen condition was measured by using PCB piezoelectric pressure sensors. The FTIR spectrascopy was also used to test and verify the detonation gas product. The results show that the detonation heat value increases with the increase of the oxygen content,and the content of CO and CO2 increase,and the content of HCN increases firstly and then decreases rapidly, and the content of CH4 decreases gradually. In standard condition and oxygen condition,the quasi-static pressure is 0. 255 MPa and 0. 310 MPa respectively. All of these indicate that with the increase of the oxygen content, the oxidbility of FAE enhances gradually, and more enengy is released. The energy release rate of liquid-solid mixed FAE increases significantly.