Table 1 Process parameters used for the nanoindentation creep tests

From: Design and development of a novel polymer coating system with exceptional creep resistance

Nanoindentation apparatus

NanoTest Vantage V5 (Micro Materials)

Nanoindenter

Berkovich (new tip)

Base coating material

Pure Polyurethane (Pure PU)

Core-shell particles (additives mixed with PU)

Solid silica nanosphere@TiO2 (SSN@TiO2)

Hollow ceramic microsphere@TiO2 (HCM@TiO2)

Peak load (Pmax)

2, 12.5, 32 mN

Loading time (Tl)

5, 10, 15 s

Dwell period (Td)

5 s

Creep recovery (Tr)

60 s

Unloading time (Tu)

5 s