Anti-Ozonants in EPDM: Extending the Service Life of Outdoor Architectural Seals.

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.