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UHMWPE (Ultra High Molecular Weight-Poly ethylene) was develop to be used in unfavorable conditions.
The molecular weight of a normal HDPE is around 100,000 to 400,000, but that of a UHMWPE is approximately 5,000,000 to 10,000,000 at the least. As the polymer chain becomes several times longer, it contains wear resistance, shock resistances,
non-absorptiveness, and slipperiness.
The higher molecular weight, the more prominent the characteristics of UHMWPE. The ASTM defines those with a molecular weight of more than 3,100,000 as UHMWPE. It is normally called GUR. This is an ingredient(powder) brand produced by TICONA, and it normally uses ingredients with a molecular weight more than 9,200,000.