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.
| Category | Details |
|---|---|
| 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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