PS passivation refers to the process of special treatment of the surface of Polystyrene (PS) to enhance its weather resistance and prevent color change.
Passivation treatment can use an acidic solution or other chemical to break the tiny bonded point-like chains of the surface layer, making the material surface more stable and durable. This treatment is often used in the production of PS products and the protection of finished products to increase their service life and appearance.
Passivation is the opposite of sharpening, and it is the same as blurring, but it is instrumented, and it can be modified locally, while blurring is for a large area