Heat dissipation and heat protection composite material throat liner for rocket engine and preparation method of heat dissipation and heat protection composite material throat liner

Abstract

The invention discloses a dissipative heat-proof composite material throat liner for a rocket engine and a preparation method of the throat liner, and relates to the technical field of preparation of ablation-resistant and scouring-resistant materials. The invention aims to solve the technical problem that the ablation resistance and the scouring resistance of the traditional carbon / carbon composite material cannot meet the requirements of a solid rocket engine. The heat dissipation and heat protection composite material throat liner is formed by compounding graphite and aluminum alloy; the aluminum alloy is composed of Al and Si. The preparation method comprises the following steps: manufacturing a graphite throat liner preform, a graphite throat liner preform core mold and a graphite throat liner prefabrication mold; closing the die and filling the die; preparing a graphite composite material throat liner by adopting a pressure infiltration method; and naturally cooling to room temperature, and demolding to obtain the heat dissipation and heat protection composite material throat liner. According to the graphite-based dissipation heat-proof composite material throat liner obtained by the preparation method, the ablation resistance is effectively improved under the condition that the graphite is kept light, high in strength and good in thermal shock resistance. The heat dissipation and heat protection composite material throat liner prepared by the invention is used for rocket engines.

Images