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The Effect of Basecoat Pigmentation on Mechanical Properties of an Automotive Basecoat/clearcoat System During Weathering by H. Yari; S. Moradian; B. Ramazanzade; A. Kashani; N. Tahmasebi is a Materials Science article available to read on EtoBox.

What is The Effect of Basecoat Pigmentation on Mechanical Properties of an Automotive Basecoat/clearcoat System During Weathering about?

The aim of this study is to elucidate the effect of basecoat pigmentation on mechanical aspects of an automotive basecoat/clearcoat (BC/CC) system during artificial weathering exposures. A silver basecoat as the most reflective and a black basecoat as the most absorptive basecoat were selected. These two extreme behaviored basecoats were chosen with hopes that other basecoats would behave somewhere between the silver and the black extremes. The structural and mechanical properties of the coatings were investigated after various weathering exposure times (0, 150, 300, 450, 600 h). Dynamic mechanical thermal analysis (DMTA) was carried out to study variations in structure and basic characteristics of the system such as cross-linking density and T g during weathering. In order to investigate variations in mechanical properties of the system, nano indentation, nano scratch, and tensile tests were also utilized. It was found that although both silver and black systems experienced post-curing reactions (dominant at earlier stages of weathering) and degradation reactions (dominant at later stages of weathering), but basecoat pigmentation affected the post-curing and degradation reaction r

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Author

H. Yari; S. Moradian; B. Ramazanzade; A. Kashani; N. Tahmasebi

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0141-3910)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)