含能材料自催化分解特性的快速鉴别方法

Autocatalysis is one of the major reasons that make energetic materials extremely dangerous. The commonly used methods for identifying autocatalytic reactions is the “isothermal methods” based on differential scanning calorimetry (DSC) and microcalorimetry (C80) . However, for these methods, temperature selection is one difficult problem, and the test period is long with some danger. So it is necessary to find a fast and safe method for the identification of autocatalytic reactions. This study proposes a method to quickly identify the characteristics of autocatalytic reactions and determine the reaction strength based on adiabatic thermal tests combined with reaction mechanism functions, which is used to measure the adiabatic thermal decomposition characteristics of five samples (20% DTBP and toluene mixed solution, HNS-IV, BNCP, CL-20, and CMC-LA). This method does not require the calculation of accurate reaction kinetic parameters, can identify the autocatalytic characteristics at the early stage of the autocatalytic reactions which reduces the measurement time and greatly reduces the risk in the process, and can quickly identify whether autocatalysis is involved in the decomposition of the substance and accurately characterize the autocatalytic intensity of the reactions.