Solvay Specialty Polymers USA, Alpharetta, Ga., has introduced a new class of high-performance polyester compounds that are said to deliver higher heat and light stability than competitive materials for LED television uses, as well as general indoor/outdoor lighting applications. Offered under the Lavanta tradename, they utilize a broad range of polyester resins such as PCT and LCP.
The first grade in the series, Lavanta 5115 WH 011, is a PCT-based, 15% glass-reinforced injection molding compound developed specifically for LED electronic packaging with surface-mount technology. The grade features greater than 95% reflectivity and excellent whiteness retention even after thermal and light aging. This is said to give it excellent reliability for LEDs that operate at high junction temperatures. The material can fill very thin wall sections required for low-profile, side-view LEDs and also boasts excellent dimensional stability due to its low moisture absorption and exceptional weld-line strength. Solvay soon plans to introduce an enhanced version with even greater heat and light stability for longer product life and reliability.