Special rubber material for pressure accumulator of aviation helicopter and preparation method of material

A special rubber material for a pressure accumulator of an aviation helicopter belongs to the technical field of aviation helicopters and is prepared by mixing the following raw materials in parts by weight through an internal mixer: 95-105 parts of raw rubber, 0.5-1.5 parts of sulfur, 6-10 parts of zinc oxide, 8-12 parts of magnesium oxide, 18-22 parts of dibutyl phthalate and 39-44 parts of spray carbon black. The invention relates to a preparation method of the special rubber material. The preparation method comprises the following two steps: respectively weighing raw rubber, sulfur, zinc oxide, magnesium oxide, dibutyl phthalate and spray carbon black in proportion, and sequentially adding the weighed raw materials into a mixing mill for mixing to obtain the mixed rubber material. The prepared rubber compound is high in performance, tensile strength, tensile elongation at break, permanent deformation, (shore) hardness, brittle temperature and 10 # hydraulic oil (at 70 DEG C for 24 hours) quality change al