含硝胺和铝粉的少烟改性双基推进剂表面和界面性能

研究了不同含氮量的硝化棉(NC)和不同粒度填料(Al、RDX和HMX)的表面性能,NC与填料之间的界面性能,以及表面和界面性能对含硝胺和铝粉的少烟改性双基推进剂力学性能的影响.结果表明,随着RDX、HMX以及A1粉粒度的减小,其表面张力逐渐增大,RDX、HMX与NC之间的界面张力随着RDX和HMX粒度或硝化棉含氮量的减...

Surface and Interface Properties of Less Smoke Composite Modified Double-base Propellant Containing Nitramine and Aluminium

The surface properties of fillers(HMX,RDX and Al)with various particle size and nitrocellulose(NC)with various content of nitrogen,the interface properties between NC and fillers,and the effects of the surface and interface properties on mechanical properties of less smoke modified double-base propellant containing nitramine and aluminum were investigated.The results show that the surface tension of HMX,RDX and Al increase with the decrease in their particle size.The interface tension between NC and fillers(RDX,HMX and Al) decrease with decreasing the particle size of RDX and HMX,or with the decrease in nitrogen content of NC.The adhesion work between NC and fillers increases with decreasing the particle size of fillers or with decrease in nitrogen percentage of nitrocellulose.And the adhesion work between NC and Al are bigger than those between NC and oxidizers(RDX and HMX).Three kinds of NC couldn′t spread spontaneously on the surface of the fillers.When the interfacial tension between NC and fillers is lower and its adhesive work is higher,the higher tensile strength of propellant is obtained.