In the field of aerospace, which requires extremely high material performance, polysilazane coatings play a unique and important role.
Firstly, in terms of the external surface protection of the aircraft, strict pre-treatment should be carried out on the metal or composite material matrix of the aircraft before use. This includes removing impurities such as oil stains, dust, and possible oxide layers from the surface, often ensuring the cleanliness of the surface through professional organic solvent wiping, ultrasonic cleaning, and other methods. Then, the polysilazane coating is uniformly covered on the surface by spraying. During spraying, the pressure, spraying angle, and distance from the coated object of the spray gun should be precisely controlled. For example, the spray gun pressure is generally maintained between 0.3-0.5MPa, the spraying angle is kept perpendicular or nearly perpendicular to the surface, and the distance is controlled at around 15-20 centimeters. This can ensure that the coating thickness is uniform and dense, avoiding defects such as sagging and orange peel.
For high-temperature components such as aircraft engines, polysilazane coatings also require special curing treatment. Usually, the coated components are placed in a high-temperature oven and heated and cured according to a specific heating curve. The heating rate is generally controlled at 5-10 ℃/min, gradually rising to 200-300 ℃ and maintaining it for a certain period of time, such as 1-2 hours, to fully crosslink and cure the polysilazane coating, forming a protective layer that is resistant to high temperatures, oxidation, and can effectively block external erosion, ensuring that the engine remains stable in high temperatures, high-speed airflow, and complex space environments.
In addition, immersion coating is also used for the protection of some precision electronic equipment in aerospace. First, prepare the polysilazane coating into a solution of appropriate concentration, carefully immerse the electronic device in the solution, slowly and uniformly lift it out to ensure uniform adhesion of the coating, and then perform low-temperature drying and appropriate curing steps to provide good moisture resistance, corrosion resistance, and electromagnetic interference resistance for the electronic device, ensuring its normal operation in complex space flight or harsh atmospheric environments.
In summary, in the aerospace industry, polysilazane coatings provide protection for various components and contribute to the continuous development of the aerospace industry through meticulous pretreatment, precise coating methods, and strict curing processes, according to different application areas and protection requirements.

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