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Erschienen in: Journal of Polymer Research 10/2019

01.10.2019 | ORIGINAL PAPER

Improvement of mechanical toughness of polypropylene by laminating with elastomer

verfasst von: Ryosuke Hachisuka, Toshiaki Kobayashi, Masayuki Yamaguchi

Erschienen in: Journal of Polymer Research | Ausgabe 10/2019

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Abstract

We used three-point bending tests to investigate the effects of elastomer lamination on the failure mode of bar-shaped products using isotactic polypropylene (PP). When a thermoplastic elastomer sheet was laminated on PP, which was prepared by double-shot injection molding, the specimen showed high mechanical toughness without signs of stress whitening. Although rubbery materials have low tensile moduli, their bulk moduli are comparable to those of plastics. Therefore, the laminated elastomer, located inside of the bending deformation, prohibits sharp bending angles during the deformation. Consequently, craze formation, which is the origin of stress whitening and leads to brittle fracture, hardly occurs.

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Metadaten
Titel
Improvement of mechanical toughness of polypropylene by laminating with elastomer
verfasst von
Ryosuke Hachisuka
Toshiaki Kobayashi
Masayuki Yamaguchi
Publikationsdatum
01.10.2019
Verlag
Springer Netherlands
Erschienen in
Journal of Polymer Research / Ausgabe 10/2019
Print ISSN: 1022-9760
Elektronische ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-019-1910-6

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