Abstract: The mechanical properties of BAMO-AMMO base propellants with various amounts of RDX are characterized by using monaxial tensile test. The results show that the tensile stress of BAMO-AMMO base propellants increases and the tensile elongation decreases when the RDX content increases from 70% to 90%, but the change from 75% to 85% is inconspicuous. The effect of the RDX content on mechanical properties of BAMO-AMMO base propellants is analyzed by dynamic mechanical analyzer(DMA).The analysis result of DMA shows that the change rule of glass-transition temperature with RDX content is the same as that of tensile elongation. The elongation increases, the glass-transition temperature rises and the loss tangent (tan δ) enlarges with the increase in RDX content.

Key words: ordnance science and technology, solid propellant, BAMO-AMMO base propellant, mechanical property, dynamic thermomechanic analysis