Butyl hydroxy aluminum-free propellant and preparation method thereof

Abstract

The invention discloses a butyl hydroxy aluminum-free propellant and a preparation method thereof. The raw materials comprise the following components in percentage by mass: 7.5%-8.0% of an adhesive,2.5%-3.5% of a plasticizer, 0.5%-1.0% of a curing agent, 63%-74% of an oxidant, 10%-20% of a nitramine explosive, 1.5%-2.5% of a combustion rate catalyst, 1.0%-3.0% of a combustion stabilizer and 0.5%-2% of a combustion rate regulator which is one or more of organic barium salt, amantadine derivative and ferrocenyl quaternary ammonium salt. The hydroxyl-terminated polybutadiene aluminum-free propellant provided by the invention has the characteristics of less smoke and low characteristic signal, and has lower combustion speed pressure index within the range of 16-24MPa, thereby ensuring the working stability of a high-pressure engine.

Description

technical field [0001] The invention relates to the technical field of composite solid propellants, in particular to a butylated hydroxy aluminum-free propellant and a preparation method thereof. Background technique [0002] With the development of missile technology, high pressure, high acceleration and strong stealth flight capabilities have become the development direction of tactical missiles. Airborne air-to-ground missiles generally use single-chamber dual-thrust engines. The booster stage of the engine has high thrust, high working pressure, and short combustion time; the cruise stage has low thrust, low working pressure, and long duration. At the same time, in order to enhance the environmental adaptability of airborne air-to-surface missiles, it is required that the propellant has less smoke and has a low characteristic signal. [0003] The excellent performance of the airborne air-to-ground missile engine depends on the combustion performance and smoke signal of ...

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Problems solved by technology

However, such substances will have a relatively large negative impact on the propellant. For example, if the working pressure exceeds 9MPa, ammonium oxalate will reduce the burning rate and the pressure index will fail. Carbonate is an inert material, which will significantly reduce the energy performance of the propellant; nano-aluminum powder and Metal oxides can lead to poor process performance of the propellant and increase the smoke signature of the propellant

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