Polyethylene compositions and articles made therefrom

Abstract

The present invention provides a composition suitable for use in plumbing applications, the composition comprising: an ultra-high molecular weight ethylene-based polymer having an inherent viscosity of 5 to 50 deciliters / gram; a polyethylene resin comprising a first molecular weight ethylene-based polymer a polymer component and a second molecular weight ethylene-based polymer component, wherein the polyethylene resin has a density of 0.930 to 0.960 g / cc; a thermoplastic polyolefin elastomer has a density of 0.850 to 0.910 g / cc; and optionally of fluoropolymers.

Description

technical field

[0001] Embodiments of the present disclosure generally relate to polyethylene compositions and the use of polyethylene compositions to form shaped articles, such as pipes. Background technique

[0002] Pipes made from polyolefins such as PE resins are relatively lightweight, easy to handle and non-corrosive. Existing polyolefin pipes can provide relatively high stiffness so that they can be laid in the ground, and relatively high flexibility, so that they can adapt to the movement of the ground. However, existing piping used to convey the flow of slurry or other abrasive particles can be subject to high levels of wear. In some applications, existing piping may not be sufficient to handle the delivery of the slurry or abrasive particle stream. For example, HDPE pipes may not be able to transport water-based sandy slurries (eg, mineral slurries) or petroleum-based and / or solvent-based slurries. Therefore, these conveying applications may require the use of h...

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