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02-02-2015

Lavanta 5115 WH 224

High-Performance Polyester Compound for LED TV Applications

Solvay Specialty Polymers has unveiled an enhanced version of its Lavanta High-Performance Polyester (HPP) for production of light-emitting diodes (LEDs) for televisions and backlight unit (BLU) applications. The second-generation product – Lavanta 5115 WH 224 – provides significantly improved processability while maintaining its high heat and light stability.

Second generation Lavanta (figure: Solvay)

Second generation Lavanta (figure: Solvay)

Lavanta 5115 WH 224 is a 15% glass fiber-reinforced polycyclohexylene terephthalate (PCT) compound developed specifically for LED electronic packaging applications that utilize surface mount technology. The injection molding grade provides enhanced processability versus other available PCTs which results in higher yields and shorter cycle times for molders. It can be molded at a lower temperature (125°C/257°F) than competitive PCTs and still maintains 100% of its maximum crystallinity. Cooler molds enable cycle times to be reduced, resulting in lower energy use and reduced cost.

Lavanta 5115 WH 224 has high reflectivity (greater than 95%) with excellent whiteness retention even after thermal and light aging. This gives it excellent reliability for LEDs that operate at high junction temperatures up to 150°C (302°F). Lavanta 5115 WH 224 replaces competitive materials including polyphthalamides (PPA) like PA6T and PA9T, which can only operate up to 120°C (248°F). The new PCT grade also has lower moisture absorption and excellent dimensional stability compared to PPA.

The second-generation Lavanta HPP also boasts strong mechanical properties including tensile strength of 78 MPa (11,312 psi) and elongation of 1.6%. This mechanical performance allows for easy ejection from the tool and improved yields during assembly.

Company profile

SOLVAY SA

Rue de Ransbeek 310
BE 1120 BRUSSELS

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