A new approach to investigate scratch morphology and appearance of an automotive coating containing nano-SiO2 and polysiloxane additives

- Gonio-spectrophotometer is used to evaluate scratch morphology.
- Appearance changes (after scratch) was studied by colorimetric parameters.
- Two types of fracture scratches were distinguished by gonio-spectrophotometer.
- Fracture type scratch was observed at low loadings of additives.
- Self-healing ability of scratches was studied by gonio-spectrophotometer.