What properties (advantages) does UHMW have?
UHMW has the advantages of a small friction coefficient, low wear, excellent chemical resistance, impact resistance, pressure resistance, freezing resistance, heat preservation, self-lubrication, scaling resistance, stress cracking resistance, and reproducibility. Among them, wear resistance, low-temperature resistance, corrosion resistance, self-lubrication, and impact resistance are the highest among all plastics.
Now let us see the first important properties of UHMW PE products :
Low density and good flexibility
The density of UHMWPE is 56% lower than that of PTFE, 33% lower than that of POM, and 30% lower than that of PBTP, which is lower than that of other engineering plastics. And the density of UHMWPE pipe is low, only 1/8 of that of steel pipe. It is easy to use, can be bent and laid, has good flexibility, and can be used easily and quickly.
Wear resistance can be matched with polytetrafluoroethylene (PTFE) as a super wear-resistant thermoplastic resin. Compared with other engineering plastics, the mortar abrasion index of UHMWPE is only 1/5 of PA66 and 1/10 of HDPE and PVC. The abrasion resistance of UHMWPE is proportional to the molecular weight. The higher the molecular weight, the better the abrasion resistance. The wear resistance of ultra-high molecular weight polyethylene pipes is 4-7 times higher than that of steel pipes and stainless steel pipes when conveying various slurries, and about 10 times higher than that of PVC pipes and polyethylene pipes, which greatly improves the service life of the pipes.
UHMWPE has a very low friction factor (0.05-0.11), so it has excellent self-lubrication. Compared with the friction factor of other engineering plastics, the dynamic friction factor of UHMWPE is 1/2 of that of PA66 and POM under water-lubricated conditions, and it is second only to polytetrafluoroethylene (PTFE) with the best self-lubricating properties in plastics under non-lubricated conditions.
To help you understand better with UHMW PE plastics, we are glad to make some examples for its application.
Such as UHMWPE marine fender-facing pads, due to their self-lubricating, high impact strength, and 0 water absorption.
UHMWPE linings for hoppers, chutes, silos, coal bins, truck bodies, and conveyor systems. Due to its excellent wear resistance and self-lubricating property.
UHMWPE crane outrigger pads and wear parts blocks and strips, due to its good impact strength and never break-down property.
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