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Time-Dependent Fracture Behaviour of Polymers at Impact and Quasi-Static Loading Conditions Read chapter Read first chapter

2017 | OriginalPaper | Chapter

5. Mechanical and Fracture Mechanical Properties of Polymorphous Polypropylene

Authors : A. Monami, B. Langer, J. Sadilek, J. Kučera, W. Grellmann

Published in: Deformation and Fracture Behaviour of Polymer Materials

Publisher: Springer International Publishing

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Abstract

Polypropylene (PP) is a widely used thermoplastic material and shows a polymorphic behavior. Results of three different types of PP, namely non-nucleated, α- and β-nucleated PP are presented. These materials were prepared under different cooling rates to influence the degree of crystallinity within the materials. The materials resistance against stable crack propagation was described by R-curves. The J d–Δa curves were determined using the instrumented Charpy impact test to apply a higher loading velocity. The results show not only the influence of the cooling rate on the degree of crystallinity but also a correlation between the degree of crystallinity and the materials resistance against stable crack propagation.

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previous chapter Thermographic Characterisation of the Deformation and Fracture Behaviour of Polymers with High Time and Spatial Resolution
next chapter Numerical Modelling of Damage Initiation and Failure of Long Fibre-Reinforced Thermoplastics
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Metadata
Title
Mechanical and Fracture Mechanical Properties of Polymorphous Polypropylene
Authors
A. Monami
B. Langer
J. Sadilek
J. Kučera
W. Grellmann
Copyright Year
2017
Book
Deformation and Fracture Behaviour of Polymer Materials

Print ISBN: 978-3-319-41877-3

Electronic ISBN: 978-3-319-41879-7

Copyright Year: 2017

DOI
https://doi.org/10.1007/978-3-319-41879-7_5

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