Silane modified anti-settling polyurethane waterproof coating and preparation method thereof

The invention belongs to the technical field of coatings, and particularly relates to a silane modified anti-settling polyurethane waterproof coating which is characterized by being composed of the following components in parts by weight: 30-60 parts of an alpha-silane modified polymer, 1-5 parts of a water removal agent, 30-60 parts of a filler, 1-5 parts of amino silane and 0.5-3 parts of a light stabilizer. The amphiphilic silicon dioxide filler can be well dissolved in a polymer matrix, an anti-settling agent does not need to be added additionally, and settling is avoided after long-term storage; the adopted filler contains an ionic liquid group, so that the filler has a good dispersion characteristic and is not easy to agglomerate when in use; the amphiphilic silicon dioxide also contains a dodecyl long-chain branch, so that a cured film of the amphiphilic silicon dioxide has relatively good toughness, a plasticizer does not need to be additionally added, small molecule migrationis further avoided, and t