Page 13 - Handbook of Surface Improvement and Modification

8 Scratch and Mar Resistance

Figure 2.7. AFM micrographs (upper raw) − ABS, (lower raw) − ASA. (a) before annealing, (b) after annealing.
[Adapted, by permission, from Hossain, MM; Jahnke, E; Boeckmann, P; Guriyanova, S; Minkwitz, R; Sue, H-J,
Tribology Intl., 99, 249-57, 2016.]
ered by MA POSS molecules when the MA POSS loadings were higher than 10 wt%,
8
8
7
resulting in incomplete curing due to a large steric hindrance of MA POSS. When
8
MA POSS loading was less than 10 wt%, a higher degree of conversion resulted and the
8
7
scratch resistance of the coating was enhanced.
The case of the scratch-resistant hybrid coatings based on non-hydrolytic sol-gel
ZrO nanoparticles is probably more characteristic of the effect of loading because the
2
8
relationship is not affected by curing reactions. As could be expected an increased
scratch-resistance was observed when the concentration of ZrO nanoparticles was
2