For UV resistance select from........

Abs
Acetal (delrin)
Noryl
Nylon
PBT
Polycarbonate Glass Filled
all above in color black

PEEK - if you have LOTS of money, ie 1993 per foot, 2" dia, $231.88,
unless you would like a "sheet", which is only 12" x 48" x 2" thick,
sit down........$7163.20
Acrylic (UF-3, UF-4, Solar Shield)
Polycarb (Tuffak XL, Hyzod SR)
Poly-Teak Board
PVDF (Kynar)
Starboard
Starlite 6000
UHMW
Ultem 1000

source was a Laird Plastics selection guide

Someone else can please narrow down the other factors.

michael