Polysilazanes CAS NO:475645-84-2 are pre-ceramic polymers with a silicon-nitrogen backbone. In recent years they have developed as a high-performance binder in protective coatings for transportation vehicles, commercial and residential buildings, and industrial plants.
Automobiles, buildings, and infrastructure all require long-lasting surface protection against weathering, corrosion, heat, and abrasion. Thus, having robust protective coatings is crucial for preserving their value and reducing maintenance cost and down time. While polyurethanes and epoxies are the conventional solutions for protective coatings, fluoropolymers and Si-containing polymers have attracted a considerable amount of attention because of their excellent performance in chemical resistance, heat stability, or surface hardness. Among them, polysilazanes have emerged as an outstanding binder material for high-temperature, weather-proof, and abrasion-resistant coatings.
Polysilazanes are thermosetting resins, and their coatings can be conveniently cured and crosslinked in ambient conditions.
Polysilazane coatings display outstanding surface hardness and resistance to scratch and abrasion.
Polysilazane is a superior binder material for thermal barrier coatings (TBC). This property can be easily demonstrated via thermal gravimetric analysis (TGA).
the polysilazane coating exhibits a higher water contact angle and lower surface energy than the three benchmarks, which suggests a better water repellency and non-stickiness.
In addition, polysilazanes can covalently bind to the polar groups on natural or treated surfaces, thus offering excellent adhesion to many substrates, including metal, glass, plastics, ceramics, etc. They also form smooth and uniform coatings on these substrates.
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