Epr Ethylene Propylene Rubber

Epr specifically refers to ep copolymer while epdm refers to ep terpolymer.

Epr ethylene propylene rubber.

The m class comprises elastomers having a saturated chain of the polyethylene type the m deriving from the more correct term polymethylene. From a performance standpoint there is no noticeable difference. 204 c 400 f in water and or steam cold flexibility. It is one of a number of rubber insulation materials.

Failure or improper selection or improper use of the products described herein or related items can cause death personal injury and property damage. Epdm is made from ethylene propylene and a diene comonomer that enables. Heat resistance up to 150 c 302 f max. Ep copolymers must be peroxide cured while epdm polymers can be cured via sulfur or.

As the base resin is too soft for direct application in cable a range of fillers dominated by highly refined clay is employed to achieve the required mechanical and electrical properties epr cable compound is highly stable chemically and thermally and epr based cables can be. Epdm is an m class rubber under astm standard d 1418. Ethylene propylene rubber epm epr epdm thermal application type. The skeletal formula of ethylene propylene rubber.

This document and other information from parker hannifin corporation its. Epdm is also based on the same constituent monomers however as no unsaturation is present in the backbone it is added as a third monomer pendent to the main chain. The base polymer of epr cable was first developed in the early 1960s can vary in crystallinity chemistry etc. What s the difference between ep epr and epdm.

The most prominent application of ethylene propylene rubber is in epr insulation. Epr aka epm ep copolymer contains only ethylene and propylene monomers. Ep refers to the ethylene propylene family of rubber materials. Epdm rubber ethylene propylene diene monomer rubber is a type of synthetic rubber that is used in many applications.

Epr is widely used as an insulation material for electric cables due to its high dielectric strength but it is. In industries ethylene propylene rubber epr is being used in the manufacturing of seals automotive weather stripping roofing membranes expansion joints rubber mechanical fittings and parts hoses belts and tubes. Low temperature 30 f specifications met. Epm sometimes also known as ep rubber is based on ethylene and propylene monomers with no unsaturation carbon carbon double bonds present.

Epdm aka ept ep terpolymer is composed of ethylene propylene and a third monomer called a diene three different dienes are in common use today but discussing their differences gets extremely dry and technical. The epr polymers can be tailored for different applications. Epr is widely used as an insulator for. Since introduction in the 1960s annual production has increased to 870 000 metric tons.