| abstract |
Disclosed is an alumina sol-silane composite material prepared from raw materials including the following components, in parts by weight: 5 to 45 parts of alumina sol, 30 to 90 parts of silane, 3 to 10 parts of silane coupling agent, and 1 to 5 parts of dispersant. The preparation method of the composite material comprises mixing the alumina sol and the silane coupling agent to obtain a first mixture solution, mixing silane, the silane coupling agent, and the dispersant to obtain a second mixture solution, and mixing the first mixture solution with the second mixture solution to obtain the alumina sol-silane composite material. The composite material is coated on building surfaces to form a hydrophobic anti-corrosive coating. |