Application of thermoplastic polyurethane elastomer in modified double base propellant

In order to improve the mechanical properties, a novel thermoplastic polyurethane elastomer(TPUE) with good miscibility with NG and NC is synthesized and used in modified double base propellant. The effects of TPUE on the mechanical properties, technique properties, combustion and energy properties of nitramine modified double base propellant are studied. It is concluded that when the TPUE is introduced into modified double base propellant, the mechanical properties especially at low temperature,and the technique properties are remarkably improved and the burning rate and explosion heat are slightly lowered.