| Composition |
–Base Polymer: Fluoroelastomer (FKM) copolymer |
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–Reinforcing Agents: Carbon black (30–50 phr), silica (for clarity) |
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–Plasticizers: Phthalates/adipates (5–15 phr) |
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–Curing Agents: Bisphenol AF (0.5–2 phr), peroxide (DCP) |
| Physical Properties |
–Hardness (Shore A): 50–90 (ASTM D2240) |
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–Tensile Strength: 10–25 MPa (ASTM D412) |
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–Elongation at Break: 150–400% (ASTM D412) |
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–Density: 1.8–2.0 g/cm³ |
| Thermal Resistance |
–Service Temperature: -20°C to +250°C (intermittent 300°C) |
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–Thermal Stability: <10% weight loss at 300°C (24h, ASTM D573) |
| Chemical Resistance |
–Inert To: Acids, bases, oils, fuels, hydraulic fluids, and halogenated solvents |
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–Limitations: Ketones (e.g., acetone), amines, and strong oxidizing acids |
| Key Applications |
–Automotive: Seals, gaskets, and fuel hoses |
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–Aerospace: O-rings for hydraulic systems and fuel lines |
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–Oil & Gas: Downhole tools and chemical-processing equipment |
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–Semiconductor: Vacuum chambers and plasma-resistant components |
| Processing |
–Mixing: Internal mixer or two-roll mill (10–30 min, 40–60°C) |
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–Molding: Compression/injection molding (160–200°C, 5–20 MPa) |
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–Curing: Post-cure (230°C, 4–24h) for optimal compression set |
| Safety & Compliance |
–MSDS: Flammable (flash point >200°C); avoid inhalation/skin contact |
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–Regulatory: REACH, RoHS, and FDA 21 CFR 177.2600 (food-grade variants) |
| Storage |
–Conditions: Cool (<30°C), dry, away from UV/ozone; shelf life 12–24 months |
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–Packaging: Polyethylene-lined bags (prevent moisture absorption) |
| Quality Control |
–Testing: Mooney viscosity (ML 1+4. ASTM D1646), compression set (ASTM D395) |
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–Certifications: ISO 9001 (manufacturing), UL 94 (flammability) |
