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Energetic Lead or Copper Salts of Hydroxypyridines as Combustion Catalysts of RDX-CMDB Propellant

ZHAO Fengqi,CHEN Pei,LUO Yang, ZHANG Ruie, LI Shangwen(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 RDXCMDB 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 2hydroxy3,5dinitropyridine, 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 2hydroxy3,5dinitropyridine and 4hydroxy3,5dinitropyridine is due to their different thermal decomposition mechanism and different carbon content formed in the decomposition process.
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