Ammunition and explosive-charge making – Loading fireworks and bursting charges – Placing bursting charge in projectile
Patent
1990-11-30
1991-10-15
Lechert, Jr., Stephen J.
Ammunition and explosive-charge making
Loading fireworks and bursting charges
Placing bursting charge in projectile
102290, 102473, 1491096, 264 31, F42G 300
Patent
active
050564056
ABSTRACT:
A solid propellant to inhibitor bonding system for use in replaceable prolant grain assemblies is used with an inhibitor sleeve that has one end attached to an end closure having interior insulation, made of the same rubber insulation material as the inhibitor, and forming a cylindrical cavity for receiving a poured propellant mix. The bonding system is employed prior to pouring the propellant mix. This bonding system involves cleaning the interior surface of the cavity with freon solvent and brush applying a barrier coat, comprising an epoxy resin with amine curing agents, to the interior surface of the cleaned inhibitor. The barrier coat is then cured and a liner is then brush coated onto the cured interior surface of the barrier coat. The liner is then cured and the propellant is then cast into the cavity formed by the lined inhibitor sleeve and insulated closure. It is important the the polymer and curing agent of the propellant and liner be the same to assure optimum compatibility and effective adhesive bonding. This is accomplished by providing common chemical constituents even though they are formed by different processes and have other different chemical constituents.
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Davidson Thomas F.
Sullivan Evester
Lechert Jr. Stephen J.
The United States of America as represented by the Secretary of
Warsh Kenneth L.
Wohlfarth Robert M.
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