EPDM rubber is a kind of synthetic rubber. It is extremely durable and flexible and is therefore often used in vehicles for window and door seals as well as cooling system hoses. Simply put, pure rubber becomes brittle with temperature variations, where synthetic rubber (EPDM) remains flexible and withstands temperature changes for decades.
EPDM is a copolymer with elastomeric properties, meaning it is both a viscous and elastic polymer. If stretched, it returns to its original shape. Its two main components, ethylene and propylene, are obtained from both petroleum and natural gas.
EPDM (ethylene propylene diene monomer) gets its name from the chemicals (monomers) mixed in various proportions to form itself. These are ethylene, propylene and diene. The ethylene content is usually between 45-75 percent. Diene monomers make up only a small part of this synthetic composition, but provide crosslinking that provides incredible flexibility and durability. EPDM's excellent material properties come from this molecular network structure, making it unique in flexibility and resistance to aging.
In short, EPDM is not a natural rubber, it is a synthetic rubber that is a mixture of several chemical compounds that give it excellent physical and chemical properties. EPDM rubber has a high level of resistance to ozone and direct sunlight and has a long service life. The EPDM rubber coating also exhibits excellent electrical insulation, compression set and low temperature properties. Their resistance to chemicals is generally good.
The main difference between synthetic EPDM rubber and natural rubber is their physical and chemical properties, which are determined by the different materials used in their manufacturing processes. Natural rubber is an organic, plant-based material derived from a tree. EPDM rubber coating, by contrast, is a synthetic, man-made material that is a mixture of polymerized chemical compounds. Industrial EPDM and natural rubber are used both as general-purpose rubber materials and as flexible elastomers, showing high levels of abrasion resistance, high tensile strength and low compressive strength. EPDM is best used outdoors in industrial applications where natural rubber cannot withstand.
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