Reactivity of polyaniline composites with attractive cyclic nitramines  

作　　者：Veerabhadragouda B.Patil Roman Svoboda Svatopluk Zeman 

机构地区：[1]Institute of Energetic Materials,Faculty of Chemical Technology,University of Pardubice,Pardubice CZ-53210,Czech Republic [2]Department of Physical Chemistry,Faculty of Chemical Technology,University of Pardubice,Pardubice CZ-53210,Czech Republic

出　　处：《Defence Technology(防务技术)》2025年第3期1-12,共12页Defence Technology

基　　金：funding from the Student Grant Project no.SGS_2022_003 of the Faculty of Chemical Technology at the University of Pardubice Czechia.

摘　　要：Composite microcrystals of the nitramines(NAs)viz.,RDX,HMX,BCHMX,and CL-20 with electrically conductive polyaniline(PANi)are a charge transfer complexes in coagglomerated composite crystals(CACs).The activation energies of thermolysis,E_(a),of the pure NAs and their PANi-CACs were determined using the Kissinger method,and decomposition processes are discussed.Except for the RDX/PANi CACs,all the other CACs show higher E_(a) values for decomposition compared to their pure NA counterparts.For all CACs,relationships are specified between the E_(a) values,on the one hand,and the squares of the detonation velocities,enthalpies of formation,spark energy and impact sensitivities,on the other.The relationships between their low-temperature heats of decomposition,DH,from DSC,and their enthalpy of formation,logarithm of impact sensitivity,electric spark energy,as well as detonation energy,are described.The PANi favorably influences the density of the corresponding CACs;surprisingly close linear correlations were found,and explained,between these densities and the E_(a) values.This presence of PANi strongly increased the electrical spark sensitivity of the CACs in comparison to the base NAs.Based on the results obtained,it can be noted in particular the exceptional desensitization of HMX to impact and the increased sensitivity to electrical spark by coating its crystals with polyaniline.

关 键 词：Coagglomeration Impact sensitivity NITRAMINES POLYANILINE Thermal decomposition 

分 类 号：TQ5[化学工程]