[Amps] Corian for HV insulators?

[Jim Barber]

Can anyone think of a reason I shouldn't use (plain white) DuPont Corian 
for HV insulators? (up to 15KV working)

I have some Corian scrap on hand, and need to machine some insulating 
parts for my new HiPot, BVT or whatever you want to call it.

An internet search spat out that that Corian is acrylic with aluminum 
trihydrate added. I don't know the proportions, but both components have 
a dielectric strength of over 10KV/mm. Based on that alone it would seem 
to be ok... ??

Thanks,
--jim