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Abstract
AbstractPigmented mineral‐filled polypropylene (PP‐PMF) is marketed as a potential alternative to ABS (acrylonitrile‐butyldiene‐styrene) for interior automotive components. However, PP‐PMF is easily damaged by surface scratch and mar, thus limiting its acceptance for interior applications. This study investigates the test methods used to quantify the extent of scratch and mar damage and the effect of different mineral fillers on the scratch and mar resistance of PP‐PMF. Correlation was found between scratch visibility and scratch hardness, which can be measured by laser profilometer. The PP‐PMF specimen with 13 wt% talc is the worst in terms of scratch visibility. Wollastonite filler provided higher scratch and mar resistance, while the addition of 0.5 wt% lubricant showed some beneficial effect.
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