Energetic Lead or Copper Salts of Hydroxypyridines as Combustion Catalysts of RDX-CMDB Propellant
ZHAO Fengqi,CHEN Pei,LUO Yang, ZHANG Ruie, LI Shangwen(Xi′an Modern Chemistry Research Institute, Xi′an 710065, China)
The effect of six kinds of energetic lead or copper salts of hydroxypyridines on the combustion properties of RDXCMDB propellant was investigated. It is discovered that the lead salts of hydroxypyridines containing nitro groups possess better catalytic effect and ability to reduce pressure exponent for the propellant, especially for lead salt of 2hydroxy3,5dinitropyridine, which has the highest catalytic efficiency. The catalysis of the energetic copper salts of hydroxypyridines in the propellant is not obvious. The catalysis difference between lead salt 2hydroxy3,5dinitropyridine and 4hydroxy3,5dinitropyridine is due to their different thermal decomposition mechanism and different carbon content formed in the decomposition process.