Hey guys,

Been doing a search and the only results are years old and not giving any answers.

I'm looking to skin my PP plastics on my car, and from experience of other parts, PP isn't going to be fun.

So was wondering what process you guys may have worked out now to allow us to skin PP successfully.

Kindest

Virtually impossible. Polyolefins like polypropylene are extremely low surface energy, epoxies are just never ever going to bond to them no matter what you do. 

The only way I can see to maybe do it is to create an offset mould that you laminate your carbon into, and then bond it onto your polypropylene using a specialist acrylic adhesive like Permabond TA4610. This obviously isn't going to work for anything but quite simple components, and even then I would question how long it would hold up. My advice - abandon the idea now.

Very difficult as eluded to above.  You could experiment with flame treatment and skimming with an epoxy adhesive to get a usable surface but its going to be hit and miss. Certainly those approaches aren't likely to work with a resin due to the slow curing speed.  The flame treatment process only really works as it changes the surface reactivity of the plastic for a relatively short period of time. 

Other way to look at it is score it really deeply and heavily to help mechanical locking and wrap the carbon over the edges of the sides or through holes etc to physically mechanically lock the skin in place.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant