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EPDM rubber compound

It has excellent aging resistance such as ozone resistance, heat resistance, weather resistance, etc. It can be widely used in automotive parts, waterproof materials for construction, wire and cable sheaths, heat-resistant hoses, tapes, automotive seals and other fields.

CategoryDetails
Composition Base Polymer: Ethylene Propylene Diene Monomer (EPDM, ENB/DCPD types)
Reinforcing Fillers: Carbon black (30–60 phr), silica (10–30 phr)
Plasticizers: Paraffinic oils (10–20 phr)
Curing Agents: Sulfur/accelerators (1–3 phr) or peroxide (DCP)
Physical Properties Hardness (Shore A): 50–85 (ASTM D2240)
Tensile Strength: 7–18 MPa (ASTM D412)
Elongation at Break: 300–700% (ASTM D412)
Density: 1.1–1.3 g/cm³
Thermal Resistance Service Temperature: -40°C to +150°C (intermittent 175°C)
Thermal Stability: <10% weight loss at 150°C (24h, ASTM D573)
Chemical Resistance Resistant To: Ozone, UV, weathering, polar solvents, and alkalis
Limitations: Hydrocarbon oils, fuels, and halogenated compounds
Key Applications Automotive: Weatherstripping, radiator hoses, and brake components
Construction: Roofing membranes, expansion joints, and sealants
Electrical: Cable insulation and surge arresters
Appliances: Gaskets and vibration dampers
Processing Mixing: Two-roll mill (20–30 min, 50–70°C) or internal mixer
Molding: Compression/injection molding (160–200°C, 5–15 MPa)
Curing: Post-cure (170°C, 2–4h) for optimal compression set
Safety & Compliance MSDS: Non-flammable (flash point >250°C); avoid inhalation/skin contact
Regulatory: REACH, RoHS, and UL 94 (flammability)
Storage Conditions: Dry, <30°C, away from UV/ozone; shelf life 12–18 months
Packaging: Polyethylene-lined bags (prevent contamination)
Quality Control Testing: Mooney viscosity (ML 1+4. ASTM D1646), compression set (ASTM D395)
Certifications: ISO 9001 (manufacturing), ASTM D2000 (standard classification)

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