What is the Function of Intermediate Paint?
2 Answers
The functions of intermediate paint include the following aspects: Increasing the thickness of the paint film: Enhancing the durability and service life of the paint coating. Good economic efficiency: Using a corrosion protection system consisting of primer, intermediate paint, and topcoat offers better economic efficiency compared to using only primer and topcoat for the same service life, meaning lower costs. Improving adhesion and bonding strength between primer and topcoat: Acting as a connecting paint, it enhances the adhesion and bonding strength between primer and topcoat, especially when used with epoxy zinc-rich primers containing high zinc content. Enhancing surface decoration: Using intermediate paint can make the surface paint film fuller, brighter, and smoother. Good sealing performance of epoxy micaceous iron oxide intermediate paint: Particularly suitable for corrosion protection systems in humid environments.
I often encounter issues with the primer surfacer during car repairs. Its main function is to connect the primer and topcoat, enhancing adhesion and making the car paint more durable and corrosion-resistant. The primer surfacer also fills minor scratches and unevenness on the car body surface, making it smooth and refined, ensuring an even and attractive color when the topcoat is finally applied. Without the primer surfacer, the primer is directly exposed to air and prone to rust, while the topcoat is more likely to peel off, affecting the appearance. I remember a friend's car that didn't use a good primer surfacer, and the paint started bubbling not long after, resulting in even higher repair costs. So, never skip this layer—it protects the car body structure and extends the vehicle's lifespan, especially for drivers in humid northern regions who need to pay extra attention to maintenance.
