Résumé : |
Untreated aluminium and aluminium alloys dull very quickly after contact with corrosive media or UV light. When polysiloxanes are used to coat the same substrates, however, the result is excellent gloss retention, even following 2,000 hours' exposure in the salt spray test and 2,000 hours' QUV-B weathering. These coatings, furthermore, exhibit pronounced non-stick properties and therefore prevent or minimize possible dirt pick-up. |