Investigation of accelerated aging behaviour of high performance industrial coatings by dynamic mechanical analysis

- Dynamic mechanical analysis (DMA) was used to study four different industrial topcoats.
- Tg varies widely depending on cure chemistry, composition and crosslink density.
- Creep recovery is a critical factor for improved durability in topcoats.
- Crosslink density and Tg change considerably after artificial weathering.
- DMA study gives valuable indications about the long-term performance properties.