What type of auto part material would be easier to paint, polyurethane or plastic?

I was going to order a front bumper but was faced with more than one type of material to choose from.What type of auto part material would be easier to paint, polyurethane or plastic?
Good question.


It depends several factors, such as the painter, the type of paint being used, how it will be cured, etc. If a body shop is going to paint it, go with the plastic. The ';plastic'; that you are referring to is actually a thermoplastic polymer called Polypropylene (PP). Bumpers today are made of PP for various reasons. In regard to painting, PP is very resistant to many chemical solvents and bases, which you would find in all automotive paints. So basically the paint will adhere to the bumper and cure (dry out) without damaging it. Also, PP is used because it will ';collapse'; and absorb the impact in an accident without damaging the frame. So if this is a repair job by a body shopw this is the best choice.





Polyurethane is used in many ways. It forms a surface that is much harder, more durable and very resistant to damage from the elements like water and oxygen. Many marine surfaces like watercrafts and surfboards are made of a polyurethane core. But once they are structually damaged, they're done and they cannot be recylced. Thermoplastics such as PP can be recycled and reused which is better for everyone in the long run. Imagine not being able to recylcle the damaged bumpers from car accidents! I could go on for hours about the differences. If your bumper happens to be a composite like carbon fiber , then you'd be choosing polyurethane. Otherwise go with the PP.





Hope this helps in any way.


Joe

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