What is it about?
Two thermoplastic olefins (TPOs) systems were subjected to a standardized scratch test at three different testing speeds: 1, 10, and 100 mm/s. Raising the ethylene content in EPR not only increased the overall blend crystallinity, but also altered the internal morphology of the material. Scratch testing rate appears to impart a significant effect on the scratch behavior of the material.
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Why is it important?
TPOs offer a wide range of material properties that are attractive to the polymer processing industry. This work presented a thorough investigation on the effect of rigidness and testing speed on the scratch behavior of TPOs. The results provided a guidelines to improve the scratch performance of TPOs.
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This page is a summary of: Scratch behavior of soft thermoplastic olefins: effects of ethylene content and testing rate, Journal of Materials Science, December 2007, Springer Science + Business Media,
DOI: 10.1007/s10853-007-2283-5.
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