In the realm of advanced materials, the age-old dilemma of “having to choose between flexibility and high-temperature resistance” has long been a limiting factor—plastics are easy to shape but fail under extreme heat, while ceramics withstand harsh environments but are difficult to process. The emergence of polysilazane has completely broken this industry curse. It combines the processing flexibility of plastics with the high-temperature resilience of ceramics, embodying extraordinary performance that challenges conventional thinking.
The “transformable code” of polysilazane lies in its unique molecular architecture. At room temperature, it exists as a low-viscosity liquid with flow characteristics comparable to conventional coatings. It can be applied through spraying, dipping, or brushing without specialized equipment, making it extremely user-friendly. Its adaptability is equally impressive: whether on metal substrates like steel and aluminum alloys, inorganic materials such as glass and ceramics, or low-polarity, traditionally “difficult-to-bond” plastics like PP and PC, its reactive molecular groups form precise chemical bonds with substrate hydroxyl groups. Cross-cut adhesion tests achieve grade 0, fully addressing the common issue of poor adhesion and delamination seen with traditional materials. When temperatures exceed 200°C, it enters “transformation mode,” where molecular restructuring gradually forms a dense ceramic network dominated by Si–O and Si–C bonds. Above 800°C, full ceramic conversion is achieved, seamlessly transitioning from easy-to-process to extreme-temperature resistant.
This unique property makes polysilazane particularly valuable in high-end manufacturing. Turbine blades, combustion chambers, and other hot-end components of aircraft engines operate under sustained temperatures above 1000°C, high pressure, and corrosive gas exposure. Conventional coatings often fail due to thermal shock cracking, but polysilazane can be applied at room temperature without affecting component precision. At high temperatures, it forms a ceramic layer capable of withstanding over 1200°C, offering excellent oxidation resistance and thermal shock performance, significantly extending component lifespan. During rocket launches, nozzles are exposed to extreme gas temperatures, and polysilazane coatings have become the standard protective layer, ensuring safe and reliable performance. In the automotive industry, exhaust systems are continuously exposed to high-temperature gases and water. Conventional coatings typically last less than two years, but polysilazane enables room-temperature application compatible with high-throughput production lines, and its high-temperature ceramic conversion doubles the coating lifespan, reducing post-sale maintenance costs for manufacturers.
Polysilazane also demonstrates exceptional protective performance in industrial and consumer applications. Marine platform steel structures and oil pipelines exposed to high salt spray and humidity withstand 5000 hours of neutral salt spray testing with no substrate corrosion or coating blistering, surpassing traditional coatings. In chemical storage tanks, its coatings effectively isolate corrosive media, enabling multi-year operation without major maintenance. Additionally, it provides multiple protective functions: an oxygen index ≥32% makes it flame-retardant, suitable for fireproof insulation on electronic chips and PCBs; its low surface tension repels water and oil, allowing easy cleaning of glassware and kitchenware; and its outstanding wear resistance makes it ideal for DIY applications, protecting metal tools and furniture while enabling custom color finishes for enhanced aesthetics.
From aerospace “critical national assets” to precision electronics, from industrial anti-corrosion needs to household upgrades, polysilazane breaks traditional material limitations with its room-temperature processability and high-temperature ceramic transformation. This highly adaptable, “flexible yet resilient” material not only represents a benchmark of innovation in materials science but also unlocks limitless potential for performance upgrades across industries, becoming a key driver of industrial innovation.
