Preparation before construction
Surface treatment:
Oil removal: Use solvents to scrub the grease on metal surfaces, or clean with acid or alkali solutions. After removal, rinse with clean water to remove residual solution.
Rust removal: Sandblasting the steel surface to achieve Sa2.5 rust removal standard, thoroughly removing oxide scale, rust, impurities, etc. If manual rust removal is used, it must reach St3 level.
Roughness treatment: Make the surface roughness of the substrate reach 30-50 μ m, providing a good foundation for coating adhesion.
Environmental inspection: The construction environment temperature should be controlled between 5-40 ℃, the air humidity should be less than 80%, and the substrate temperature should be 3 ℃ above the dew point.
Material preparation: Check whether the coating is within its shelf life and whether there are any lumps, precipitates, or other phenomena. Two component or multi-component coatings should be proportioned according to the manufacturer's specified ratio, such as 18.5 kg for component A and 1.5 kg for component B, and special diluents should be prepared.
Coating construction
Paint mixing: Mix the paint thoroughly and evenly. If the paint is too thick, a special diluent can be used for dilution. When using airless spraying, the amount of diluent used is about 5% of the weight of the coating; Air spraying is about 15% -20%; Brush coating is about 10% -15%.
Primer coating: It is recommended to use spraying technology to apply 1-2 layers of primer, so that the film thickness can reach 80 μ m. Ensure that the primer evenly covers the surface of the substrate, without any omissions, sagging, or other phenomena.
Topcoat coating: After the primer surface dries, apply the topcoat coating. Generally, two coats of topcoat are sprayed to achieve the specified film thickness, such as 50 μ m. During construction, pay attention to controlling the distance and angle between the spray gun and the workpiece to ensure uniform and smooth coating.
Drying and solidification
Natural drying: After application, it can be naturally dried at room temperature for a period of time, such as 0.5-1 hour.
Baking and drying: After drying at room temperature, place the workpiece in an oven at 180-220 ℃ for baking. For example, Xinwei high-temperature resistant paint can be dried at 210-220 ℃ for 40 minutes.
Post construction inspection
Appearance inspection: The coating should be smooth and even, with uniform color, and no shrinkage, bubbles, sagging, or missed coating.
Thickness detection: Use a thickness gauge to measure the coating thickness and ensure that it meets the specified film thickness requirements.
Adhesion testing: Coating adhesion can be tested using methods such as grid crossing, and should comply with relevant standards and requirements.

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