HDPE vs UHMWEP

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Palotero
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Joined: Sun Apr 02, 2006 5:57 am

HDPE vs UHMWEP

Post 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.
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endre
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Location: norway
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Post 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)
collin
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Joined: Sun Oct 23, 2005 10:19 pm

Post 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.
------------------Take nothing I say as expert advice------------------
Buuk
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Joined: Wed Apr 26, 2006 2:49 am
Location: The Netherlands

Post by Buuk »

Check the links below for very detailed info about UHMWPE and HDPE

Detailed info about UHMWPE

Detailed info about HDPE
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