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​Advantages of Polysilazane as a Thermal Protective Coating

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Excellent high-temperature stability
Polysilazane can maintain good chemical structural stability in high temperature environments and is not easily decomposed or deformed. In the face of the thousands of degrees Celsius high temperature generated by spacecraft re-entry into the atmosphere in the aerospace field, or the extreme high temperature conditions of industrial high-temperature equipment, it can still maintain its protective performance, continuously play a role in blocking heat transfer, and effectively protect the substrate material from high temperature damage.
Good antioxidant properties
In high-temperature aerobic environments, polysilazane can form a dense oxide protective film, which can prevent oxygen from further contacting the interior of the coating and the substrate material, slow down the oxidation rate of the coating, reduce performance degradation caused by oxidation, and ensure that components exposed to high temperature conditions for a long time can continue to receive reliable thermal protection.
Lower thermal conductivity
It itself has a low thermal conductivity, which means that the heat transfer speed is relatively slow when passing through the polysilazane coating. It can effectively block the conduction of high temperature from the outside to the protected substrate material, and "intercept" the heat as much as possible outside the coating, creating a relatively low temperature working environment for the substrate. This characteristic can be used to reduce the impact of high temperature, such as protecting engine components and key structures of aircraft.
Strong adhesion to the substrate
Polysilazane coatings can form strong bonds with various substrate materials (such as metals, ceramics, etc.) through chemical bonding and other methods. In this way, when experiencing complex working conditions such as temperature changes and mechanical vibrations, the coating is not easily peeled off or peeled off from the substrate, and can always stably adhere to the surface of the substrate, providing stable and effective thermal protection for the substrate.
Good processability
It can easily form a uniform and continuous coating on the surface of the substrate through various coating processes (such as spraying, immersion, etc.), and can precisely control the thickness, flatness, etc. of the coating according to actual needs, to adapt to components with different shapes and thermal protection requirements, and improve the flexibility and applicability of coating applications.
Good chemical stability
When facing the erosion of acidic and alkaline chemicals, as well as various chemical factors in complex industrial and space environments, the polysilazane coating can still maintain its chemical stability and will not be easily corroded or damaged, further ensuring its long-term effectiveness and reliability as a thermal protection coating.

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

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