UBE’s ETERNATHANE® polycarbonate-based urethane prepolymers offer an advanced solution for manufacturing high-performance soft polyurethane elastomers designed to withstand demanding industrial applications. These specialized materials address critical challenges in industries such as oil, mining, and machinery, where components like bearing pads, seals, roll covers, and pump liners require exceptional durability under harsh operating conditions.
Traditional polyether- or polyester-based polyurethanes often fall short in providing the necessary thermal stability, hydrolytic resistance, and mechanical performance needed for these applications. UBE’s polycarbonate-based prepolymers overcome these limitations by delivering superior load-bearing capabilities with hardness ranging from 60 Shore A to 65 Shore D, tensile strength of 5–30 MPa, and elongation at break between 560% and 860%. These properties make them ideal for shock absorbers, machinery mounts, and other load-bearing components.
A key advantage of ETERNATHANE® prepolymers is their outstanding abrasion resistance, with wear volumes as low as 35 mm³ under severe abrasive conditions, significantly outperforming traditional polyol-based alternatives. Additionally, these materials exhibit exceptional resistance to hydrolysis and chemicals, retaining nearly 90% of their original mechanical properties even after prolonged exposure to water, solvents, and high temperatures. This ensures long-term reliability in environments where moisture and chemical exposure are common.
Thermal and oxidation stability are further enhanced, with the prepolymers maintaining 90% of their original tensile strength after 50 days at 120°C. This makes them suitable for applications requiring consistent performance under extreme heat. The improved mechanical properties, including higher tear strength and resilience, further extend the lifespan of polyurethane parts, reducing downtime and maintenance costs.
For manufacturers seeking durable, high-performance soft polyurethane solutions, UBE’s ETERNATHANE® prepolymers provide a reliable choice that combines abrasion resistance, chemical stability, and thermal performance. To explore the full technical details and benefits of these advanced materials, complete the download form to access the complete document.
