Development of Characterisation Methodology for Coatings

Time: 14:20 - 14:40

Date: 8 June 2022

Theatre: Seminar Room 2

8-june-2022 14:20 8-june-2022 14:40 Europe/London Development of Characterisation Methodology for Coatings

The curing of a polyurethane coating, TATA STEEL Colorcoat®, was investigated for factors that show what constitutes a good cure, under cure and over cure. Cured and uncured TATA STEEL Colorcoat® samples were analysed using DSC, TGA, FTIR and scratch testing. It was found that the cure temperature, which ranged 240°C from to 285°C, had… Read more »

Surfex

The curing of a polyurethane coating, TATA STEEL Colorcoat®, was investigated for factors that show what constitutes a good cure, under cure and over cure. Cured and uncured TATA STEEL Colorcoat® samples were analysed using DSC, TGA, FTIR and scratch testing. It was found that the cure temperature, which ranged 240°C from to 285°C, had an effect on the performance of polyurethane coating. It was observed that both over cured and under cured samples both yielded lower scratch testing friction values than samples with a good cure. It was also found the initial degradation temperature, measured by TGA, for under cured samples was 15°C to 20°C lower than the initial degradation temperature for good cured and over cured samples. This can be used as a way to distinguish under cured samples. There was a definitive change in under cured (240-250°C), cured (255-265°C) and overcured (270-285°C).

Speakers

  • Dr Tara Schiller Associate Professor - University of Warwick

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