z-logo
Premium
Graphite reinforced silane crosslinked high density polyethylene: The effect of filler loading on the thermal and mechanical properties
Author(s) -
Kourtidou Dimitra,
Symeou Elli,
Terzopoulou Zoi,
Vasileiadis Isaak,
Kehagias Thomas,
Pavlidou Eleni,
Kyratsi Theodora,
Bikiaris Dimitrios N.,
Chrissafis Konstantinos
Publication year - 2021
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.25892
Subject(s) - materials science , composite material , thermal conductivity , polyethylene , graphite , ultimate tensile strength , filler (materials) , silane , phase (matter) , organic chemistry , chemistry
Crosslinked polyethylene is a promising polymer regarding its mechanical properties and wear resistance, predominantly used in pipework systems. However, it suffers from low thermal conductivity, which limits its application in geothermal heating/cooling systems. In this work, crosslinked high‐density polyethylene (PEX) composites with spherical graphite (SG) as a reinforcing filler are examined in terms of their thermal and mechanical properties. Thermal conductivity measurements showed a significant improvement of the thermal conductivity of PEX with increasing filler content (40.6% augmentation for 5 wt% SG content), while the experimental data are in good agreement with the Chauhan theoretical model for spherical particles. Tensile tests revealed that the elastic modulus of PEX/SG composites presented a considerable improvement (23.6% augmentation for 5 wt% SG content). Various micromechanical models for the prediction of the composites' elastic behavior were applied to the experimental data, which present a satisfactory agreement with the Takayanagi I two‐phase model for low concentrations of SG, and the Takayanagi II two‐phase model for higher filler content.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here