Accession Number : ADD015243

Title :   Propellant-to-Inhibitor Bonding System.

Descriptive Note : Patent, Filed 30 Nov 90, patented 15 Oct 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Davidson, Thomas F ; Sullivan, Evester

Report Date : 15 Oct 1991

Pagination or Media Count : 12

Abstract : A solid propellant to inhibitor bonding system for use in replaceable propellant 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.

Descriptors :   *ADHESIVE BONDING, *PROPELLANTS, ADHESIVES, AMINES, BARRIERS, BONDING, BRUSHES, CAVITIES, CHEMICALS, CLEANING, CLOSURES, COMPATIBILITY, CURING, CURING AGENTS, EPOXY RESINS, INHIBITORS, INSULATION, MATERIALS, PLASTICS, POLYMERS, PROPELLANT GRAINS, RUBBER, SLEEVES, SOLID PROPELLANTS, SOLIDS, SOLVENTS, SURFACES

Subject Categories : Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE