Oil-resistant silicone sealant as well as preparation method and application thereof

The invention relates to an oil-resistant silicone sealant, and relates to the technical field of organic silicone sealants. The oil-resistant silicone sealant is prepared from 30 to 50 parts of a basic polymer, 8 to 16 parts of reinforcing filler, 25 to 45 parts of oil-resistant filler, 4 to 10 parts of a cross-linking agent, 0.5 to 5.5 parts of a hydroxyl scavenger, 0.3 to 2.2 parts of a silane coupling agent, 1.5 to 5.5 parts of an oil-resistant aid and 0.3 to 2.2 parts of a vulcanization catalyst, and the base polymer is alpha, omega-dihydroxy polymethyl (3, 3, 3-trifluoropropyl) siloxane. According to the silicone sealant, alpha, omega-dihydroxy polymethyl (3, 3, 3-trifluoropropyl) siloxane serves as a basic polymer, so that the oil resistance of the silicone sealant is obviously improved, the addition amount of oil-resistant filler is reduced, the addition amount of reinforcing filler is increased, and the mechanical property of the silicone sealant is improved on the premise that the oil-resistant effe