well, theres alot you could talk about. a
for one, you can talk about epoxy. theres alot you can talk about, the different characteristics of hardeners, resins, heat reactions, blah blah blah.
you can also talk about flame treating. this is the process used to set the surfaces of UHMWPE and other plastics for epoxy bonding. its a VERY intricate science, theres a ton you could talk about there.
i suppose you could also discuss plastic forming techniques, extrusion and sintered.
the steel edges and metal treating techniques would be interesting.
those are pretty much the only areas of ski construction that have legit chemistry applications. as for sources, come on, do your own damn HW.