The automotive industry covers numerous components and complex usage environments, among which polysilazane coatings have diverse applications and corresponding usage methods.
The initial preparation work is crucial in the painting of car bodies. Surface treatment such as grinding and phosphating should be carried out on the steel plate of the car body to make the surface roughness suitable and more conducive to the adhesion of the coating. After that, the polysilazane coating material shall be prepared. When preparing, the diluent and other additives shall be added in strict accordance with the proportion specified by the manufacturer, and they shall be stirred evenly to ensure that the viscosity of the coating meets the requirements of vehicle body spraying. Generally, the viscosity is controlled between 15-25s (coating -4 cups).
Automated electrostatic spraying equipment is used for spraying operations, grounding the vehicle body and applying opposite charges to the polysilazane coating through a spray gun. By utilizing the principle of electrostatic adsorption, the coating is evenly adhered to the vehicle body. The movement speed of the spray gun and the number of layers sprayed are both important. The movement speed of the spray gun is usually maintained at 30-50cm/s. Depending on the color of the vehicle and the protection requirements, 2-3 layers are usually sprayed. After each layer is sprayed, there should be an appropriate leveling time of about 5-10 minutes to make the coating surface smooth and avoid defects such as pinholes.
For components inside the engine compartment of automobiles, the use of polysilazane coatings varies due to issues such as high temperatures, oil pollution, and chemical erosion. First, clean and degrease the engine cylinder block, intake and exhaust pipes, and other components. Then, you can choose to apply a polysilazane coating by brushing or rolling. When brushing, use a high-quality brush that does not shed hair, and evenly brush along the texture direction of the component to ensure complete coating coverage; Roll coating requires controlling the rolling speed and pressure of the rolling tool to ensure uniform coating thickness. After coating is completed, it should be cured in a specific temperature and humidity environment. The temperature is generally controlled at 150-200 ℃, the humidity is maintained at 40% -60%, and the curing time is about 1-1.5 hours, allowing the coating to fully exert its high temperature resistance, oil resistance, and chemical corrosion resistance, and extending the service life of engine compartment components.
Polysilazane coatings can also be applied to exterior components such as car wheels through vacuum coating. Firstly, the wheel hub is finely cleaned and pre treated before being placed in a vacuum coating equipment. Under high vacuum conditions, the polysilazane coating material evaporates and deposits on the surface of the wheel hub, forming a protective film with high hardness, good glossiness, and wear resistance. This not only enhances the appearance of the wheel hub, but also strengthens its ability to resist scratches and corrosion, allowing the car wheel hub to maintain good appearance and performance in complex road conditions and different weather conditions.
Through these different usage methods, polysilazane coatings have demonstrated excellent protective and decorative performance in various aspects of the automotive industry, contributing significantly to the overall quality improvement of automobiles.

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