双基发射药与底火剂的相容性

用差示扫描量热法(DSC)和真空安定性法(VST)研究了两种双基发射药SB-1和SB-2与底火剂(WX-击发药)的相容性。DSC试验结果表明,在底火剂(WX-击发药)与双基发射药SB-1和SB-2的混合体系中底火剂的DSC分解峰温分别升高了8.8℃和7.4℃;VST试验结果也表明,该两混合体系的净增放气量ΔV均小于0.6mL.g-1,因此,认为两体系相容。从"局部化学"的观点分析讨论了混合体系DSC分解温度升高的原因,认为WX-击发药的DSC温度升高是分解过程受到挥发或气化的硝化甘油(NG)与叠氮硝胺(DA)气体的抑制。

Compatibility of Double-base Propellant with Priming Composition

The compatibility of two double-base propellants (SB-1 and SB-2) and priming composition (WX-percussion composition) was studied by differential scanning calorimeter (DSC) and vacuum stability test (VST). The DSC results show that in the mixed systems WX-percussion composition/SB-1 and WX-percussion composition/SB-2,thermal decomposition peak temperatures of WX-percussion composition is increased by 8.8 ℃ and 7.4 ℃,respectively. Then,it can be considered that the two mixture systems are compatible. It is found in VST method that the net increment values of released gases for the two mixture systems are less than 0.6 mL·g~(-1) and the two systems are judged to be compatible. The peak temperature rise on DSC for WX-percussion composition in the two mixture systems was analyzed and discussed by the "topochemistry" principle,and it is proposed that the processes of thermal decomposition are inhibited by azido nitramine(DA) and nitroglycerine(NG) gases from their evaporation and (or) gasification.