石蜡对奥克托今热分解动力学特性的影响

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[ABSTRACT]Inorderto further understtheefect paraffin wax（PW）on the thermal decomposition octogen （HMX），thethermal decomposition processs themixturesPW HMX with diferent particle sizes24，75，103 （2 μm 250μm （mass ratio 1：1 ）were investigated by a C8O microcalorimeter. The reaction model PW/HMX mixture wasobtainedbykineticmodelfting method，theeffects theparticlesizeHMXthecontentPWonthethermal decomposition PW/HMX mixtures were analyzed.Theresults show thatPW mainlyaffects the initial decomposition stage HMX.The decrease particlesizes HMX isbeneficial tothe interactionbetweenPW HMX surface，reduces the initialdecompositionreactiontemperature，leading toanearlier exothermic peak temperature.Modulatedsamples containing HMX with a particle size 24μm PW with different mass fractions 5% ， 10% ， 30% ， 50% were designed，theadiabatic acceleration calorimetryexperiments were conducted.Underadiabaticconditions，thedecomposition PW/HMX mixture exhibits aone-stepdecompositionreaction.With thedecrease thecontentPW，the dominant role n -order reactions in adiabatic decomposition decreases the self-catalytic increases. Furthermore，the efect PWonthe self-accelerating decomposition temperature HMX was investigatedbased on kinetics.The results indicatethattheintroduction PWleads toa decrease inself-acelerating decomposition temperature，the magnitude the decrease increases with the decrease in the particle size HMX the increase in the content content.

[KEYWORDS] paraffin wax（PW）；octogen（HMX）；thermal decomposition；kinetic model

0 引言

聚合物黏结炸药（PBX）是将含能化合物中嵌入黏结剂、降感剂、稳定剂等少量功能助剂的典型复合材料，被广泛应用于军事和民用领域[1]。（剩余12232字）