Thermal Conductivity of Carbon Nanoreinforced Epoxy Composites

Abstract

The present study attempts to investigate the influence of multiwalled carbon nanotubes (MWCNTs) and graphite nanoplatelets (GNPs) on thermal conductivity (TC) of nanoreinforced polymers and nanomodified carbon fiber epoxy composites (CFRPs). Loading levels from 1 to 3% wt. of MWCNTs and from 1 to 15% wt. of GNPs were used. The results indicate that TC of nanofilled epoxy composites increased with the increase of GNP content. Quantitatively, 176% and 48% increase of TC were achieved in nanoreinforced polymers and nanomodified CFRPs, respectively, with the addition of 15% wt. GNPs into the epoxy matrix. Finally, micromechanical models were applied in order to predict analytically the TC of polymers and CFRPs. Lewis-Nielsen model with optimized parameters provides results very close to the experimental ones in the case of polymers. As far as the composites are concerned, the Hashin and Clayton models proved to be sufficiently accurate for the prediction at lower filler contents.

Thermomechanical‐electrical properties and micromechanics modeling of linear low density polyethylene reinforced with multi‐walled carbon nanotubes

“…To overcome this, in the past years polyethylene nanocomposites with several inorganic nanofilllers, such as nanoparticles, clays, graphene and carbon nanotubes (CNTs) have been prepared and studied [1][2][3][4][5][6][7][8][9][10]. CNTs have attracted attention because of their structure and properties [11,12]. HDPE reinforced with CNTs and nano-diamonds was studied in [13].…”

Graphite Nanoplatelet Modified Epoxy Resin for Carbon Fibre Reinforced Plastics with Enhanced Properties

“…Fan et al [20] found that the thermal conductivity of GNP coated fibre laminates was 13% higher with the addition of 1 wt.% GNP. Kostagiannakopoulou et al [21] indicated that a 176% and 48% increase in thermal conductivity was achieved in nanomodified polymers and CFRPs, respectively, with the addition of 15 wt.% GNP into the epoxy matrix. Nevertheless, most of the GNP doped epoxy resins exhibit an increased viscosity which inhibits subsequent composite manufacturing processes like resin transfer moulding or vacuum infusion.…”

A comparative study between epoxy/Titania micro‐ and nanoparticulate composites thermal and mechanical behavior by means of particle–matrix interphase considerations

“…Nanoparticle reinforced polymers, synergistically combine the properties of both the host polymer matrix and the discrete nanoparticles . Epoxy nanocomposites exhibit a wide range of positive characteristics, such as dielectric behaviors, thermal stability properties, good corrosion resistance, mechanical performance, and excellent tribological properties . For example, layered nanosilica particles have been introduced into epoxy resin to improve both toughness and mechanical strength .…”