Polysilazane is a class of inorganic - organic hybrid polymeric materials with silicon - nitrogen (Si - N) bonds as the main chain. Relying on its unique chemical structure, it exhibits remarkable hydrophobic properties.

From a molecular perspective, the abundant silicon - hydrogen (Si - H) bonds and nitrogen - hydrogen (N - H) bonds in the polysilazane molecular chain endow it with high reactivity, enabling it to undergo chemical reactions with various functional groups. Through specific modification methods, such as introducing low - surface - energy substances like fluorine - containing groups and long - chain alkyl groups, its surface energy can be significantly reduced, making it difficult for water droplets to spread on its surface.

In practical applications, this hydrophobic property manifests as water repellency. When water droplets come into contact with the polysilazane surface, they form a large contact angle, typically above 110°. For some superhydrophobic surfaces that have undergone meticulous modification, the contact angle can even exceed 150°, and water droplets easily roll off, achieving a self - cleaning effect similar to that of a lotus leaf.

The hydrophobic properties of polysilazane bring it a wide range of application values. In the construction field, it can be coated on glass and exterior wall materials to prevent rainwater erosion and dirt adhesion, reducing cleaning and maintenance costs and extending the service life of buildings. In the transportation industry, when applied to the surfaces of vehicles, ships, aircraft, and other means of transportation, it not only reduces wind resistance but also effectively prevents water from corroding metal components, thereby improving operational safety and reliability. In the electronics field, the hydrophobic coating of polysilazane can protect precision components such as circuit boards and chips from the influence of humid environments, ensuring the stable operation of electronic devices.

In addition, the hydrophobic properties of polysilazane also possess excellent weather resistance and chemical resistance, enabling it to maintain stable hydrophobic performance in harsh environments for a long time. With the continuous development of materials science, the hydrophobic properties of polysilazane are expected to be applied in more fields, bringing more convenience and innovation to people's lives and production.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150K.       
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.