两种TATB的热膨胀研究

Study on Thermal Expansion of Two TATB

为了优化三氨基三硝基苯(TATB)为基的混合炸药配方,研究了碳酸铵法所得细颗粒TATB(F-TATB)和氨气法所得粗颗粒TATB(L-TATB)在热循环作用下产生的膨胀。对比测试了F-TATB和L-TATB的物化性能,采用室温→-40℃→75℃→室温的高、低温度热循环试验方法,获得了两种TATB压制药柱(30 mm×5 mm)经过热循环试验后的膨胀参数,结果表明:热循环作用下两种TATB均产生了不可逆尺寸长大且随着循环次数增加药柱尺寸趋向恒定,首次热循环试验后L-TATB的膨胀率大于F-TATB;试验还发现L-TATB的总膨胀率小于F-TATB,这表明L-TATB较F-TATB更快趋于尺寸稳定。

In order to optimize the formulation group based on explosive TATB,we studied the expansion law on the fine particles size TATB（ F-TATB） and the large particle size TATB（ L-TATB） influenced by thermal cycling effect. The physical and chemical properties of F-TATB and L-TATB were compared by high and low temperature thermal cycling test method from room temperature to-40℃,then to 70℃ and then to room temperature. The expansion parameters of the suppressed TATB charge（ 30 mm × 5 mm）were obtained after thermal cycling effect. The results showed the TATB charge produced irreversible expansion,and the expansion trends were to a constant by increasing the thermal cycling numbers. It was found the L-TATB expansion ratio greater than the F-TATB after the first thermal cycling effect. But the L-TATB total expansion less than the F-TATB. The results suggested that the L-TATB became stability faster than the F-TATB. This article also explored the L-TATB and the F-TATB thermal expansion mechanism.