2026-01-15•5 min thermal testing•VIESUNCO Materials Science Team

Surviving -50°C Arctic Flex & 125°C Under-Hood Heat: Thermal Stability Compounding Masterclass

Exporting boots and seals to cold climates or automotive engine compartments? How high crosslink density ensures flexibility at -50°C without melting at 125°C.

#Extreme Temp#Cold Flex -50C#Engine Compartment#Thermal Aging#Wide Temp Range

Surviving -50°C Arctic Flex & 125°C Under-Hood Heat: Thermal Stability Compounding Masterclass

1. Glass Transition (Tg) & Thermal Creep

Polymer chains freeze and shatter below Tg, and uncoil if soft blocks melt:

▲ Lab Setup for -50C Cold Flex Testing and 125C Thermal Chamber

-50°C Cold Flex (ASTM D1052): 100,000 continuous bend cycles with zero cracking.
125°C Heat Aging (1000 Hours): Retains >85% tensile elongation for automotive boots.

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