The surface treatment technology of silicone plates is the core factor that determines their sealing performance. The application of embossing and coating processes directly affects the adaptability and reliability of products in industrial scenarios. Embossing technology forms specific textures (such as grids, stripes or dot-shaped protrusions) on the surface of silicone plates through molds, which can significantly improve the friction coefficient and contact area of the sealing surface. For example, in the automotive engine gasket scenario, cross-grid embossing with a depth of 0.3-0.5mm can increase the interface fit by 20%-35%, effectively disperse the local pressure caused by mechanical vibration, and reduce the risk of medium leakage. However, it should be noted that excessive embossing (such as depth > 1mm) may cause material elasticity loss, which in turn reduces the compression rebound rate by 8%-12%. Coating technology forms a dense protective layer of 5-50μm by spraying or dipping functional materials (such as PTFE, fluororubber) on the surface of silicone. Laboratory data show that PTFE coating can improve the chemical corrosion resistance of silicone plates by more than 3 times, especially in acid and alkaline environments (pH 1-14), the sealing life of coated silicone is 60%-80% longer than that of untreated products. However, the uniformity of the coating directly affects the sealing stability - when the thickness deviation exceeds ±10%, local peeling may occur at high temperature (200°C), resulting in a 15%-20% increase in leakage rate.
In practical applications, the composite treatment solution is more advantageous: for example, embossing first increases the mechanical bite force, and then applying a wear-resistant coating can make the sealing cycle of silicone gaskets in high-pressure pump and valve scenarios exceed 8000 hours (ISO 3601 standard). Manufacturers need to accurately match surface treatment parameters according to the working medium, pressure range (0-30MPa) and temperature conditions (-50°C to 250°C) to achieve the optimal balance between sealing performance and cost.