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EPDM (Ethylene Propylene)

  • CBD.SEALS
  • EPDM (Ethylene Propylene)
    • High quality weathering and chemical resistance for EPDM rubber
    What is the EPDM Rubber ?

    EPDM rubber, known as EPDM rubber (Ethylene Propylene Diene Monomer Rubber), is a synthetic rubber made by copolymerization of ethylene (Ethylene), propylene (Propylene) and non-conjugated diene (Diene) monomers.

    Chemical structure and synthesis

    Monomer: The main monomers of EPDM rubber are ethylene, propylene and non-conjugated diene (e.g. ethylene-norbornene, dicyclopentadiene, etc.).

    Polymerization method: EPDM rubber is usually synthesized by solution polymerization, which is carried out in organic solvents. During the polymerization process, the copolymer of ethylene and propylene forms the main chain, and the non-conjugated diene monomer is introduced as the third monomer to provide the vulcanization point.

    Polymerization initiators: Commonly used polymerization initiators include organic peroxides, azo compounds, etc..

    Our CBD Seals EPDM Compounds information：

    Weather resistance: EPDM rubber has excellent UV and ozone resistance, suitable for outdoor use.

    Heat and cold resistance: EPDM rubber has good performance in the temperature range of -50°C to 150°C.

    Chemical resistance: EPDM rubber has good resistance to most acids, alkalis, salts and polar solvents, but poor resistance to petroleum-based oils and lubricants.

    Electrical insulation: EPDM rubber has good electrical insulation properties and is suitable for seals in the electrical and electronics industries.

    Low density: EPDM rubber has a low density, usually between 0.86 and 0.87 g/cm³.

    Non-toxic: EPDM rubber is non-toxic and suitable for use in the food and medical industries.

    Processing and vulcanization

    Processing methods: EPDM rubber can be processed by traditional rubber processing methods such as extrusion, calendering, injection molding, and molding.

    Vulcanization: Vulcanization of EPDM rubber usually uses peroxide as the vulcanizing agent because EPDM rubber has a low degree of unsaturation and needs to form a cross-linking structure through peroxide. In addition, sulfur and accelerators can also be used for vulcanization.

    Areas of application

    Construction industry: for the manufacture of weather- and heat-resistant roof waterproofing materials, sealing strips, etc.

    Automotive industry: for the manufacture of weather-resistant and heat-resistant automotive seals, hoses, belts, etc.

    Wire and cable: used to manufacture weather-resistant and heat-resistant wire and cable sheathing.

    Water treatment industry: used to manufacture chemical-resistant seals, gaskets, etc.

    Household appliances: used to manufacture weather-resistant and heat-resistant seals for household appliances..

    Sustainability

    Recycling: EPDM rubber can be recycled and reused to reduce the impact on the environment. Some advanced recycling technologies can convert waste EPDM rubber into new rubber products or other useful materials..

    Ethylene propylene diene diene (EPDM) rubber is used in a wide range of applications in the construction and automotive industries due to its excellent resistance to weathering, water, low temperatures and good electrical insulation.

    Ethylene propylene diene diene (EPDM) has advantages over nitrile (NBR) in terms of better weathering, water, ozone, and low-temperature resistance, while nitrile performs better in terms of oil and abrasion resistance.

    Ethylene propylene diene diene (EPDM) has advantages over fluorocarbon (FKM) rubber in terms of lower cost, better water and ozone resistance, while fluorocarbon rubber performs better in terms of chemical, oil and high temperature resistance.