EPDM RubberWhat does EPDM stand for? EPDM stands for Ethylene Propylene Diene Monomer. It is a synthetic rubber material made predominantly from Ethylene and Propylene. It is the most widely used non-tyre rubber material in the construction and automotive industries.What is Ethylene Propylene Diene Monomer? EPDM is a synthetic elastomer that is predominantly constructed from ethylene and propylene.

Properties of EPDM Rubber

EPDM rubber is so widely used because of its robust nature. It is durable, pliable and an excellent insulator. It has fantastic noise reduction properties because it is an elastomer and thus stops vibrations from passing through it. It is also an excellent all-weather material- it is waterproof, windproof, UV resistant, and can withstand high heats and low temperatures. Whatever the weather, EPDM will stay strong and protect whatever is underneath it. It can resist even the harshest of weather conditions. This is why it is the perfect material for a roof. It behaves like an enormous seal, stopping water and anything else from getting through. Did you know that ozone is toxic to some types of rubber? Ozone is a colourless, unstable, toxic gas that occurs naturally in small amounts in our atmosphere. It is made up of three oxygen atoms (O3) and can make many rubber materials degrade and disintegrate. But ozone does not do this to EPDM. Because of the pendant structure of the diene, EPDM is between 100 and 1000 times more resistant to ozone than natural rubber. Again, this is what makes it the perfect material for your flat roof.

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EPDM Monomer.

This diagram by Research Gate shows the molecular structure of the EPDM monomer.https://www.researchgate.net/figure/291523288_fig1_Figure-1-Chemical-structure-of-EPDM-mononerTo cross link the Ethylene and Propylene molecules together, a pendant diene with double bonds is introduced which ties together the long molecule chains (several thousand molecules long!) of the Ethylene and Propylene. The diene gives reactive sites, and because these are pendant in structure they strengthen the main chains, making the material incredibly resistant.

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