| Résumé : |
Gloss retention, the ability of a coating to retain its showroom gloss during exposure, predicts the service life of automotive finishes. It is, after all, the owner's pride in a shiny car that is involved in the life of satisfactory service. Does the measure reflect the degradation of a coating under the influence of weathering? Not necessarily. New insights into the mechanism by which pigments degrade the gloss of paint films teach us that initial gloss retention results reflect not film degradation but appear to involve a continuation of the processes of film formation that continue after the coatings leaves the paint shop. We will comment on European and American perceptions of service life predictions of paint films pigmented with TiO2, chalking and gloss retention perspectives will be contrasted and their consequences will be outlined. |
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Gloss retention in EUROPEAN COATINGS JOURNAL (ECJ), N° 5/95 (05/1995)
