Mechanical properties, pyrotechnic

Binders increase cohesion between the particles of fuel and oxidizer, facilitating better consolidation and resulting in better mechanical properties of the end products. In addition, an equally important function is to coat and protect metallic or non-metallic fuels (such as metal or non-metal powders) which may otherwise react with moisture and oxygen. They also modify the burning rate and hence the performance, and at the same time reduce sensitivity to impact or friction. A comprehensive list of binders, natural to synthetic resins used for pyrotechnic formulations follows. 

Batstmov SS, Sazonov VE, Sekoytm SS, Shmtikov AS (1989) Effect of shock-thetmal treatment on mechanical properties of steels. Propell Expl Pyrotechn 14 238-240 Thomson W (1871) On the equilibrium of vapour at a curved surface of liquid. Phil Mag 42 448-452... 

Depicted uranium is used extensiveiy in pyrotechnics which have armor piercing capabiiities. Depicted uranium deficient in the more radioactive isotope U235, is the waste product of the uranium enrichment process. The depicted uranium is formed into projectiles that can penetrate armor because of their high density and mechanical properties. The impact of the projectile causes the uranium to form many pyrophoric fragments which can ignite fuel and munition items. 

---