HDPE versus UHMWPE sifffness, bend radius
HDPE versus UHMWPE sifffness, bend radius
(OP)
If we extrude a .125" diameter rod of HDPE and one from UHMWPE, which one is stiffer, or which one will have the larger bend radius?
Kevin.
Kevin.
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HDPE versus UHMWPE sifffness, bend radius
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RE: HDPE versus UHMWPE sifffness, bend radius
The higher the density of the unfilled polyethylene the higher the crystallinity. The higher the crystallinity of the PE, the higher the flexural modulus or stiffness.
Without knowing the density of the UHMWPE I cannot say for sure, but I very strongly suspect that the UHMWPE you are talking about is LDPE or MDPE and therefore is more flexible than the HDPE you mention.
Regards
Pat
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RE: HDPE versus UHMWPE sifffness, bend radius
Regards,
Cory
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RE: HDPE versus UHMWPE sifffness, bend radius
So, if you need the abrasion resistance go for UHMWPE. Otherwise use regular PE.
Modulus depends way more on added filler than on the type of PE.
If you want to bend a polymer around a radius without it breaking (i.e. in cables) you want a high elongation to break.
As mentioned, you can compare all the properties for free at www.matweb.com
Chris DeArmitt