Dynamic mechanical properties and correlation with dynamic fragility of sisal reinforced composites

In this study, the reinforcement effect in sisal/polyester composites containing distinct reinforcement content was studied ranging from fragile to strong classification. The results indicate that the reduced storage modulus changes steadily, and the loss modulus and the tan δ peak are broader for c...

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Bibliographic Details
Published in:Polymer composites 2015-01, Vol.36 (1), p.161-166
Main Authors: Ornaghi Junior, Heitor Luiz, Zattera, Ademir José, Amico, Sandro Campos
Format: Article
Language:English
Subjects:
Dynamic mechanical properties
Dynamic tests
Dynamics
Fibers
Fragility
Loss modulus
Reinforcement
Sisal
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Summary:In this study, the reinforcement effect in sisal/polyester composites containing distinct reinforcement content was studied ranging from fragile to strong classification. The results indicate that the reduced storage modulus changes steadily, and the loss modulus and the tan δ peak are broader for composites containing more fiber (dynamically strong composites). As more fiber was incorporated in the resin, lower peak height for the tan delta curve was obtained, which may be indicative of lower energy dissipation due to a greater relative amount of interface. Also, the use of reduced dynamic mechanical curves (similar to dynamic fragility) is an alternative to facilitate the study of the material behavior. POLYM. COMPOS., 36:161–166, 2015. © 2014 Society of Plastics Engineers
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.22925