I have need to create a piece with carbon fiber over polystyrene core and carbon fiber skins. The piece will be covered with carbon fiber but exposed to the elements - let’s say year round in the sunlight, in the rain, in the snow, etc.
With only UV resistant resin, how would this hold up in the environment? Would the resin yellow significantly over the coarse of a few years? Would any part of it break down due to varying outdoor temperatures? Is oxidation a real concern?
From what I understand, the polysterene should be ok but with any foam, it will shrink slightly so delamination is of a concern. I’m too worried about that b/c of the geometry of the part. I am worried about the resin/carbon breaking down over time or becoming yellow. A tiny bit of yellow is acceptable since pretty much everything dulls in sunlight however, turning very yellow is problematic, especially if some areas are in the shade and some are in the light.
Any thoughts? Are there parts out there that are similar in nature and exposed to the elements? I can think of car hoods, roofs, etc. but it seems like these cars are usually garaged or protected by clear coat or paint.
