Creep behavior of HDPE/PA66 microfibrillar composites modified with graphite nanoplatelets

Low deformational resistance of polymers can be effectively improved by reinforcement, mostly using rigid particles and fibers. In contrast, this work reveals lower tensile creep resistance of microfibrillar composites (MFC) based on high-density polyethylene (HDPE) reinforced with in-situ formed po...

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Bibliographic Details
Published inJournal of polymer research Vol. 27; no. 5
Main Authors Kelnar, Ivan, Bal, Ümitcan, Ujčič, Alexandra, Kaprálková, Ludmila, Krejčíková, Sabina, Steinhart, Michal, Nofar, Mohammadreza
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 2020
Springer Nature B.V
Subjects
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Creep strength
Deformation effects
Glass fibers
Graphite
High density polyethylenes
Inclusions
Industrial Chemistry/Chemical Engineering
Original Paper
Parameter modification
Polyamide resins
Polymer matrix composites
Polymer Sciences
Tensile creep
Creep resistance
Graphite nanoplatelets
Microfibrillar composite
Blend
Melt drawing
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Summary:Low deformational resistance of polymers can be effectively improved by reinforcement, mostly using rigid particles and fibers. In contrast, this work reveals lower tensile creep resistance of microfibrillar composites (MFC) based on high-density polyethylene (HDPE) reinforced with in-situ formed polyamide 66 (PA66) fibrils against original undrawn system containing spherical inclusions. This performance is quite different from that of other known composites containing e.g. glass fibers or spheres. Moreover, the incorporation of graphite nanoplatelets (GNP) partly eliminates this shortcoming in MFC but worsens performance of undrawn system reinforced with PA66 inclusions. The obtained results highlight so far unknown negative effect of relatively low-modulus viscoelastic fibers and GNP-modified parameters of interface on creep resistance of polymer-polymer composites.
ISSN:1022-9760
1572-8935
DOI:10.1007/s10965-020-02093-6