To improve the pharmacological mechanical of a double-base propellant composite obtained by the method of molding and propellant thus obtained.

摘要

The invention relates to a process for improving the mechanical properties of a propellant double - base composite obtained by the method of molding, and the propellant is thus obtained. (br / the process of the invention consists in introducing into the solvent of the molding of a propellant double - composite base, at least one crosslinking agent polyisocyanate. This introduction is carried out before the casting of the casting solvent in the moulding powder. The amount of crosslinking agent polyisocyanate is determined in order to obtain a ratio of nco / oh in the propellant between 0,2 0,015 and. The method makes it possible to obtain a propellant having the maximum stresses (sm) high hot while maintaining a level of the maximum elongation (em) to high, and to reinforce its mechanical strength when hot. & br / the present invention applies in particular in the field of the missiles to solid propellant.