Hydrophobicity refers to the physical property that a molecule (hydrophobic substance) repels water. Hydrophobic molecules tend to be non-polar and therefore more soluble in neutral and non-polar solutions (such as organic solvents). Hydrophobic molecules usually gather into a cluster in water, while water will form a large contact angle on the surface of hydrophobic solution and become a water drop. The interactions between water molecules and surfaces of different solid materials are different. At the intersection of water (liquid phase), material (solid phase) and air (gas phase), the included angle formed along the tangent line of the water droplet surface and the contact surface of water and material θ It is called contact angle. The water contact angle of hydrophilic materials is less than 90 degrees. The contact angle of hydrophobic water is greater than 90 degrees and less than 150 degrees, while that of super hydrophobic water is greater than 150 degrees, as shown in the figure below.
We all know that after rain, water droplets will not stick to the surface of lotus leaves, but roll back and forth like pearls, which is the most common super hydrophobic phenomenon in nature. Because of its excellent super water repellency, superhydrophobic materials have broad application prospects in national defense, industrial and agricultural production and daily life, such as superhydrophobic coatings that can be widely used in scenes requiring water repellency and antifouling.
Traditional antifouling coatings use pesticides, heavy metal salt antifouling agents and other methods to deal with the pollution of marine organisms, but most of them have problems such as damage to the marine ecological environment, unstable antifouling performance, poor long-term antifouling ability, and high cost. The super hydrophobic antifouling coating is based on the adhesion mechanism of marine fouling organisms. Its low surface energy surface layer makes the organic mucus produced by marine organisms unable to be effectively spread and adhered, directly solving the problem of fouling adhesion "fundamentally".
For Superhydrophobic coating, you could choose IOTA PHPS,
https://www.polysilazane.cn/product-inorganic-polysilazane-iota-phps.html 
