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HDPE vs UHMWEP
Posted: Sun Apr 02, 2006 6:02 am
by Palotero
Hi, i just have a simple question, is the hdpe the same as uhmwep?
And how wide should be the layer for the correct flexion?
Thanks.
Posted: Sun Apr 02, 2006 6:15 am
by endre
Yes I believe so, hdpe=high density polyethylene, uhmwpe = ultra high molecular wheight polyethylene. Pretty much the same thing.
what was that last question? Are you talking about thickness? standard bases are 1,2-1,5 mm thick. The thickness of the base don't affect on the total stiffness. (the core does)
Posted: Sun Apr 02, 2006 9:24 am
by collin
They're similar but not exactly the same. In UHMWPE the polymer chains are significantly longer than in HDPE. Since plastics are a little more variable manufacturer than say alloys with specific proportions of metals, which have standards, I'm not sure how different UHMWPE and HDPE actually are, and I couldn't quickly find a great reference.
But generally UHMW and HD have similar tensile strengths, but UHMW has much higher impact resistance and is actually slightly lighter since the longer chains force a less "crystaline" structure. Well that's what wikipedia said.
I think either would work fine for sidewalls or tip spacers.
Posted: Thu May 25, 2006 4:09 am
by Buuk
Check the links below for very detailed info about UHMWPE and HDPE
Detailed info about UHMWPE
Detailed info about HDPE