A PROCESS FOR PREPARATION OF AN IMPROVED ELASTOMER-DOUBLE BASE-COMPOSITE PROPELLANT

摘要

This invention relates to an improved elastomer—double base-composite propel lant-having improved properties. The composit has a propellant such as nitrocellulose an elastomer binder, A liquid oxidizer such as nitroglycerine. A curing agent having terminal isocyanate groups and additivee such as solid oxidiser and/or animonium perchlorate. A metallic fuel such as aluminium powder, a stabilizer, a catalyst, an additional stabiliser and processing aid. Further this invention relates to a process for preparing an elastomer double base composite propellant comprising reacting liquid oxidiser in a planetory mixer with the additives such as oxidiser, metallic, fuel, stabiliser, catalyst and curing agent which are added step by step at a temperature of 45 to 70ºC under partial vacuum.