Application of 3,5-difluoro-2,4,6-trinitroanisole in melt-cast carrier explosive
3,5-difluoro-2,4,6-trinitroanisole(DFTNAN)is a promising melt-cast carrier explosive that is expected to replace TNT.The compatibility of 3,5-difluoro-2,4,6-trinitroanisole as a new melt-cast explosive carrier with a number of high explosives(RDX,HMX,CL-20 and TKX-50)and functional additives(powdered aluminum and ammonium perchlorate)was studied at the mass ratio of 1∶1 by using DSC and VST methods.The detonation properties of DFTNAN/RDX,DFTNAN/HMX,DFTNAN/CL-20,DFTNAN/A1 and DFTNAN/AP mixtures were calculated.Experimental results of compatibility indicated that there were differences in the results of compatibility determination due to the differences in the test principles between DSC method and VST method.Through comprehensive analysis,DFTNAN showed good compatibility with RDX,HMX,CL-20,AP and Al except TKX-50.The results of detonation performance calculation exhibited that the addition of AP can effectively improve the oxygen balance of DFTNA.Among RDX,HMX and AP,the detonation energy of DFTNN/CL-20 mixed system was the biggest,with detonation velocity being 8899 m·s-1,detonation pressure 39.6 GPa,and detonation heat 6442 kJ·kg-1,which are 4.0％,32.9％and 0.6％bigger than those of pure DFTNAN,respectively..
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