Improved properties of peroxide-cured elastomer compositions

Abstract

An elastomeric composition and method for making the same are provided. The composition can include a rubber component comprising one or more ethylene-propylene elastomers, one or more peroxide curing agents and one or more non-functionalized plasticizers having a viscosity index of 120 or more.

Description

technical field [0001] Embodiments of the present invention generally relate to peroxide cured elastomeric systems. Background technique [0002] Cross-linked elastomer formulations based on ethylene-propylene (EP) and / or ethylene-propylene-diene (EPDM) elastomers are exposed to a wide range of high temperatures (>150°C) and / or low temperatures (<-20°C) during the product life cycle very useful in applications. These applications include automotive parts such as chassis belts and hoses. In order to improve the elasticity and / or processability of the above crosslinked polyolefin elastomer formulations, sufficient amounts of treating oils are added as both processing aids and plasticizers. In order to maintain the mechanical integrity of manufactured components (and their performance), the gradual loss of process oil over time needs to be minimized. [0003] Performance is especially a challenge when parts are exposed to high temperatures for extended periods of time,...

AI Technical Summary

Problems solved by technology

This presents another problem with mineral oils, since most mineral oils contain chemical moieties (cyclic or aromatic structures, unsaturation and heteroatom)

This also presents the challenge of traditional mineral oil in persistence / pour point balance

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