Multi-scale analysis and characterization of matrix/filler interface of high energy solid propellant
In view of the difficulty to qualitative and quantitative characterization of the matrix/filler interface of high energy solid propellant,the interfacial transition zone was characterized by macro-scale tensile mechanical performance experiments,meso-scale nano-indentation experiments,and micro-scale infrared and atomic force microscope(AFM),respectively.The results showed that the addition of NPBA bonding agent significantly improved the mechanical performance of the interfacial transition zone,and reduced the difference of mechanical performance between the interfacial zone and the binder bulk.That was manifested by the existence of a modulus gradient in the matrix/filler interfacial transition zone with modulus values ranged from 0.12×1 07 5Pa to 8.27×1075Pa,which was one order of magnitude higher than that of the matrix.It was analyzed that NPBA improved the modulus and adhesion force in the interfacial transition zone,which ultimately improved the mechanical performance of solid propellant.
万方数据
维普
