How Long Does It Take for a Car's Primer to Rust After Damage?

[DeIsaac]

Car primer rusting time after damage is related to environmental temperature and humidity, and there is no fixed time. Car paint consists of, from the inside out, the primer, mid-coat, color coat, and clear coat. The so-called primer is actually a protective film chemically applied to the metal car body through electrophoresis, primarily to enhance the anti-corrosion capability of the car body. Typically, white cars have black or gray primers, while dark-colored cars have the opposite. The car primer is the first layer of paint directly applied to the surface of the treated car body components. It marks the beginning of the entire coating system. The primer is designed to have excellent adhesion to the substrate, good compatibility with the mid-coat or topcoat above, and must also possess strong anti-corrosion, anti-rust, oil resistance, chemical resistance, and water resistance properties.