Fireproof mineral silicone rubber composition, fireproof mineral silicone rubber material, preparation method thereof and power line containing fireproof mineral silicone rubber material

[0036] In yet another typical embodiment of the present application, a method for preparing a fire-resistant mineral silicone rubber material is provided. The preparation method uses any of the above-mentioned fire-resistant mineral silicone rubber compositions as a raw material, and includes the following steps: S1 , using quaternary ammonium salts to modify montmorillonite to obtain modified montmorillonite; S2, mixing methyl vinyl silicone rubber, modified montmorillonite, low-melting glass powder, aluminum hydroxide and polyols Plasticizing to obtain the fire-resistant mineral base material; and S3, granulating the fire-resistant mineral base material to obtain the fire-resistant mineral silicone rubber material.

[0037] Firstly, montmorillonite is modified with quaternary ammonium salt to obtain modified montmorillonite, so as to improve the mixing and dispersion effect of montmorillonite in methyl vinyl silicone rubber; then plasticize and granulate each raw material, The