Fireproof silane modified polyether adhesive with low modulus and high displacement capacity and preparation method thereof

The invention relates to a fireproof silane modified polyether adhesive with low modulus and high displacement capacity and a preparation method thereof. The fireproof silane modified polyether adhesive with low modulus and high displacement capacity is prepared from the following raw materials in parts by weight: 100 parts of an MS-polymer prepolymer; 200-500 parts of a reinforcing filler; 2-10 parts of a thixotropic agent; 5-20 parts of a flame retardant; 2-20 parts of a modulus reducing agent; 50-300 parts of a plasticizer; 5-20 parts of a hydroxyl scavenger; 2-10 parts of a coupling agent; and 0.05-0.5 part of an organic tin catalyst, wherein the MS-polymer prepolymer is at least one of trimethoxy-terminated polyether and triethoxy-terminated polyether, and the MS-polymer prepolymer is at least one of trimethoxy-terminated polyether and triethoxy-terminated polyether; the flame retardant is a mixture of a nitrogen-based flame retardant and a phosphorus-based flame retardant; and the mold reducing agent is