Hybrid multifunctional graphene/glass-fibre polypropylene composites

Papageorgiou, Dimitrios G.; Kinloch, Ian A.; Young, Robert J.

doi:10.1016/j.compscitech.2016.10.018

Cited by 97 publications

(51 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar results show that the addition of GNPs decreased the composite tensile strength were reported by Murariu et al . and Papageorgiou et al . utilizing GNPs with mean diameters of 36 and 25 μm, respectively.…”

Section: Resultssupporting

confidence: 90%

Thermal and mechanical properties of polyamide 12/graphene nanoplatelets nanocomposites and parts fabricated by fused deposition modeling

Zhu

Ren²,

Liao

et al. 2017

J of Applied Polymer Sci

127

View full text Add to dashboard Cite

The printable polyamide 12 (PA12) nanocomposite filaments with 6 wt % graphene nanoplatelets (GNPs) for fused deposition modeling (FDM) were prepared by melting compounding and smoothly printed via a commercial FDM three-dimensional (3D) printer. The thermal conductivity (k) and elastic modulus (E) of 3D printed PA12/GNPs parts along to the printing direction had an increase by 51.4% and 7% than that of compression molded parts, which is due to the GNPs preferentially aligning along to the printing direction. Along with these improved properties, ultimate tensile strength of 3D printed PA12/GNPs parts was well maintained. These results indicate that FDM is a new way to achieve PA12/GNPs parts with enhanced k over compression moulding, which could contribute to realize efficient and flexible heat management for a wide range of applications.

show abstract

Section: Resultssupporting

confidence: 90%

Thermal and mechanical properties of polyamide 12/graphene nanoplatelets nanocomposites and parts fabricated by fused deposition modeling

Zhu

Ren²,

Liao

et al. 2017

J of Applied Polymer Sci

127

View full text Add to dashboard Cite

show abstract

“…The specific method was also utilized in a number of our previous studies upon GNP-reinforced polymers. 10,11,17,18 The dependence of the Raman intensity on the angle of incident laser in both in-plane and cross-plane is shown in the Fig. 1 (g and h).…”

Section: Microstructure and Orientation Of The Fillermentioning

confidence: 98%

Realising biaxial reinforcement via orientation-induced anisotropic swelling in graphene-based elastomers

2020

Self Cite

View full text Add to dashboard Cite

The biaxial mechanical properties constitute another remarkable advantage of graphene, but their evaluation has been overlooked in polymer nanocomposites. Herein, we provided an innovative and practical method to characterise biaxial reinforcement from graphene via swelling of elastomers, where graphene nanoplatelets (GNPs) were controlled to be oriented in-plane. The in-plane-aligned graphene imposed a biaxial constraining force to the elastomer during the swelling process that led to the anisotropic swelling behaviour of the bulk nanocomposites. This unconventional swelling behaviour was successfully modelled using statistical mechanics. Novel in situ Raman band shift measurements were also performed during the de-swelling process of the samples. The characteristic 2D band shift of the GNPs, imposed from stress transfer during the de-swelling procedure, was of the order of 0.1 cm -1 /% strain, enabling the effective biaxial Young's modulus of the GNPs in the nanocomposites to be calculated (2 GPa). The determination of the biaxial modulus of GNPs contributed to the evaluation of their Poisson's ratio (0.34), that is very important but highly impractical to be measured directly on nanoscale specimen.

show abstract

“…: When the filler loading is high enough, a number of agglomerates are formed in the nanocomposite and as a result, the reinforcing efficiency is reduced [14,24,25]. The influence of agglomeration can be quantitatively realized by the decreased values of the effective aspect ratio, obtained through the fitting of the experimentally obtained modulus data, using equation (6).…”

Section: Theoretical Analysis Using Micromechanicsmentioning

confidence: 99%

Modelling mechanical percolation in graphene-reinforced elastomer nanocomposites

Liu

Kinloch

Young

2019

Composites Part B: Engineering

Self Cite

View full text Add to dashboard Cite

Graphene is considered an ideal filler for the production of multifunctional nanocomposites; as a result, considerable efforts have been focused on the evaluation and modeling of its reinforcement characteristics. In this work, we modelled successfully the mechanical percolation phenomenon, observed on a thermoplastic elastomer (TPE) reinforced by graphene nanoplatelets (GNPs), by designing a new set of equations for filler contents below and above the percolation threshold volume fraction (Vp). The proposed micromechanical model is based on a combination of the well-established shear-lag theory and the rule-of-mixtures and was introduced to analyse the different stages and mechanisms of mechanical reinforcement. It was found that when the GNPs content is below Vp, reinforcement originates from the inherent ability of individual GNPs flakes to transfer stress efficiently. Furthermore, at higher filler contents and above Vp, the nanocomposite materials displayed accelerated stiffening due to the reduction of the distance between adjacent flakes. The model derived herein, was consistent with the experimental data and the reasons why the superlative properties of graphene cannot be fully utilized in this type of composites, were discussed in depth.2

show abstract

Hybrid multifunctional graphene/glass-fibre polypropylene composites

Cited by 97 publications

References 49 publications

Thermal and mechanical properties of polyamide 12/graphene nanoplatelets nanocomposites and parts fabricated by fused deposition modeling

Thermal and mechanical properties of polyamide 12/graphene nanoplatelets nanocomposites and parts fabricated by fused deposition modeling

Realising biaxial reinforcement via orientation-induced anisotropic swelling in graphene-based elastomers

Modelling mechanical percolation in graphene-reinforced elastomer nanocomposites

Contact Info

Product

Resources

About