Less-lethal ammunition projectile

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

C08L 53/02 (2006.01) B29C 43/00 (2006.01) B29C 45/00 (2006.01) C08L 23/16 (2006.01) C08L 23/22 (2006.01) F42B 12/72 (2006.01)

Patent

CA 2540476

A high-density composite material and its use in the manufacture of less- lethal ammunition projectile is disclosed. The composite ammunition projectile material is produced from a compact mixture of fine iron powder, a highly damping, inert, non-toxic elastomer and an inert non-toxic thermoplastic elastomer. The composite ammunition projectile material is first blended, then the projectile is injection molded or compression molded. The density of the composite ammunition projectile material is adjustable in terms of ratio of iron powder to elastomer to thermoplastic elastomer block co-polymer, but a minimum density of 2.4 gcm-3 is preferred. A blend comprising an elastomer and a thermoplastic elastomer with low creep is also disclosed.

La présente invention concerne un matériau composite de haute densité et l'utilisation de ce dernier dans la fabrication d'un projectile à munitions à effet moins mortel. Le matériau composite de projectile à munitions de l'invention est produit à partir d'un mélange compact de poudre de fer fine, d'un élastomère inerte fortement amortisseur non toxique et d'un élastomère thermoplastique inerte non toxique. On commence par mélanger le matériau composite de projectile à munitions et l'on moule ensuite le projectile par injection ou par compression. On peut ajuster la densité du matériau composite de projectile à munitions en termes de rapport entre la poudre de fer, l'élastomère et le copolymère bloc d'élastomère thermoplastique, mais avec de préférence une densité minimale de 2,4 gcm?-3¿. L'invention porte également sur un mélange comprenant un élastomère et un élastomère thermoplastique à cheminement faible.

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