Contrast-based evaluation of mar resistance of thermoplastic olefins
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The physical aspect of mar behavior is studied by applying a standardized progressive sliding load methodology to smooth and textured automotive-grade thermoplastic olefins. It is shown that surface texture has a strong effect on light scattering and, hence, the propensity for mar visibility. It is also shown that digital imaging via a desktop scanner can be used to quantitatively and objectively assess mar resistance using contrast as a basis. Incorporation of slip agent definitively improves the mar resistance for both types of surfaces. Relationships between contrast, gloss and surface roughness in relation to mar visibility are discussed. © 2011 Elsevier Ltd. All rights reserved.
author list (cited authors)
Browning, R., Hossain, M. M., Li, J., Jones, S., & Sue, H.