Preparations of fluorine-containing solid hydrophobic agent and properties of hydrophobic film

A solid hydrophobic agent with fluorine was mainly prepared by organosiloxane and hydroxyl fluorosilicone oil. After dissolved in ethanol in different concentration, the as-prepared solid hydrophobic agents were coated on the surface of A3 steels to obtain transparent hydrophobic film with thickness of less than 1 μm. And the hydrophobicity and corrosion resistance of the hydrophobic film were investigated. Results show that the hydrophobicity of the water-repellent film, as well as hydrophobic stability and corrosion resistance, are affected by the concentration of the hydrophobic agent. The addition of fluoride can obviously improve the contact angle of the hydrophobic film and enhance the corrosion resistance.