Anti-Ozonants in EPDM: Extending the Service Life of Outdoor Architectural Seals
Problem Statement
Outdoor architectural seals face ozone-induced cracking, especially in urban environments with high ozone concentrations. Standard EPDM formulations degrade prematurely, leading to seal failure and water ingress.
Material Science Analysis
Ozone attacks unsaturated polymer chains in EPDM, causing surface cracks. Anti-ozonants chemically scavenge ozone, preventing chain scission. RubberQ’s custom EPDM compound integrates proprietary anti-ozonants with optimized polymer backbone saturation. This ensures long-term resistance to ozone degradation.
Technical Specs
- Shore A Hardness: 70 ± 5
- Tensile Strength: 12 MPa
- Elongation at Break: 350%
- Temperature Range: -40°C to +120°C
- Compression Set (22 hrs @ 100°C): 20%
- Chemical Resistance: Excellent resistance to UV, ozone, and weathering.
Technical Comparison
| Parameter | RubberQ EPDM (Anti-Ozonant) | Standard EPDM | Silicone Rubber |
|---|---|---|---|
| Ozone Resistance | Excellent | Moderate | Good |
| Compression Set | 20% | 30% | 15% |
| Temperature Range | -40°C to +120°C | -40°C to +120°C | -60°C to +200°C |
| Cost Efficiency | High | High | Low |
Standard Compliance
RubberQ’s manufacturing process adheres to IATF 16949 standards, ensuring batch-to-batch consistency. Our EPDM compounds meet ASTM D2000 and ISO 3601 specifications for material performance and dimensional tolerances.
For custom material compound development or IATF 16949 documentation, consult RubberQ’s engineering department.
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