Weathering is caused by different factors, and has a milder effect on structural strength but a high effect on visual performance. A sports car that is only shiny for the first month and then loosing its gloss and color due to weathering; UV lights; leaching of pigments and destabilization by temperature are only some examples. Weathering is manifested by creating visual defects on the surface. Degradation of binders and pigments are the main problem. When a binder degrades, often smaller pigment starts to leach out. This will cause paint to loose its color and gloss.
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