What is EPR insulation?
EPR or Ethylene Propylene Rubber is a copolymer made from, as indicated by its name, ethylene, and propylene. It’s also called an elastomer. This material is mainly used in electrical cables for insulation as its dielectric strength is higher than both ethylene and propylene separately.
What is XLPE insulation?
XLPE or Cross-linked polyethylene is a thermoset insulation material. Crosslinking polymers is a process which changes the molecular structure of the polymer chains so that they are more tightly bound together and this crosslinking is done either by chemical means or physical means.
What material is EPR?
Ethylene Propylene Rubber
Ethylene Propylene Rubber is a generic term for a wide range of polymers based on copolymers of ethylene and propylene. It is one of a number of rubber insulation materials. The EPR polymers can be tailored for different applications.
Is EPR and EPDM the same material?
Materials. EPR (EPM) – This is short for Ethylene Propylene rubber, and is very closely related to EPDM (Ethylene Propylene Diene Monomer). They are functionally the same thing.
What is XLPE made of?
Both linear polyethylene and XLPE tanks are made with heated resins to create a cured plastic. However, the differences in their production create very different polyethylenes with very different structural strength. Cross-linking is simply the formation of bonds between the polymer chains.
Can XLPE cable be buried?
Excellent heat, ozone, oil and chemical resistance. Resistant to tear and abrasion. Suitable for direct burial.
What is difference between HDPE and XLPE?
Linear Polyethylene (HDPE) XLPE has 10-20 times the environmental stress crack resistance of HDPE. It has 10 times the molecular weight of HDPE. It has 3-5 times the impact and tensile strength of HDPE.
What is difference between PVC and XLPE cable?
The main difference between the two is that XLPE can be used for both high and low tension applications. Its structure provides great resistance to abrasion, stress, and other wear and tear. PVC insulation cannot withstand as much pressure, meaning it is only suitable for low tension applications.
Are EPR and EPDM the same?
EPR (aka EPM, EP copolymer) contains only ethylene and propylene monomers. 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.)