Electrical and thermal properties of a thermoplastic elastomer nanocomposite based on polypropylene/ethylene propylene diene monomer/graphene

Haghnegahdar, M.; Naderi, Ghasem; Ghoreishy, Mir Hamid Reza

doi:10.1080/1539445x.2016.1268622

Cited by 14 publications

(5 citation statements)

References 42 publications

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“…The screw speed was 10 rpm. The TPV/G composites were shaped via hydraulic lab presses (CMG 30H-12 ASTM Model B, Carver, Inc., Wabash, IN, USA), at 200 °C and 2000 psi of compressive pressure for 10 min [ 29 , 30 ]. The TPV composite sheet was a polished surface, using sandpaper (grit 600) to remove or to get rid of the polymer-rich layers, which tend to form on TPV-composite surfaces [ 31 ].…”

Section: Methodsmentioning

confidence: 99%

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

2022

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A vanadium redox flow battery (VRFB) is a promising large-scale energy storage device, due to its safety, durability, and scalability. The utilization of bipolar plates (BPs), made of thermoplastic vulcanizates (TPVs), synthetic graphite, woven-carbon-fiber fabric (WCFF), and a very thin pyrolytic graphite sheet (GS), is investigated in this study. To boost volumetric electrical conductivity, WCFF was introduced into the TPV composite, and the plate was covered with GS to increase surface electrical conductivity. Created composite BPs acquire the desired electrical conductivity, mechanical strength, and deformation characteristics. Those properties were assessed by a series of characterization experiments, and the morphology was examined using an optical microscope, a scanning electron microscope, and atomic force microscopy. Electrochemical testing was used to confirm the possibility of using the suggested BP in a working VRFB. The laminated BP was utilized in a flow cell to electrolytically convert V(IV) to V(V) and V(II), which achieved comparable results to a commercial graphite bipolar plate. Following these experiments, the laminated bipolar plates’ surfaces were examined using X-ray photoelectron spectroscopy, and no evidence of corrosion was found, indicating good durability in the hostile acidic environment.

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Section: Methodsmentioning

confidence: 99%

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

2022

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“…29,30 Alipour et al 31 found a direct correlation between formation of graphene networks and drop weight impact analysis and load-carrying capacity under different mechanical loads in flax/epoxy nanocomposites. It can be obtained from previous research 32 that the choice of PP/EPDM ratio, graphene nanosheets content, dispersion level, and processing technique can contribute to establishing graphene network formation in PP/EPDM nanocomposites based on graphene.…”

Section: Introductionmentioning

confidence: 99%

Effects of graphene network formation and its correlation with microstructure and mechanical properties in dynamically vulcanized PP/EPDM composites reinforced with few‐layer graphene

Haghnegahdar

2023

J of Applied Polymer Sci

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In this study, the effects of graphene network formation on stress–strain behavior and different mechanical properties in PP/EPDM nanocomposites were investigated. TEM observation clarified that up to the optimum content of nanoparticles, the efficient networks of graphene formed which heightened the nanocomposites tolerance against different mechanical loads. The efficiency of graphene networks in arresting crack along with the mechanisms through which they dissipate energy were extensively examined. SEM observations from the fracture surface of impact test indicated that as a result of these networks, the cracks perpendicular to the load directions were formed which efficiently assisted the nanocomposite in dissipating energy and/or hindering further development of cracks and the premature failure in PP/EPDM samples. The stress–strain behavior of resultant nanocomposites was also studied by Arruda–Boyce hyperelastic model which can predict the behavior of nanocomposites with a high degree of accuracy that is rooted in the increased interaction between graphene and polymer matrix by graphene network formation. Exceeding the optimum content, the agglomerations form and results in deviation of experimental results with the model predictions. The findings of this model also substantiated the efficiency of graphene networks in developing a load‐resistant the microstructure of PP/EPDM nanocomposites.

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“…Recently, nanofillers including (multi walls) carbon tubes, [16] graphene (GA), and other fillers have been used to prepare some advanced polymer/nanofiller nanocomposites. [17] Especially, GA, a famous 2D nano material with an ultrahigh specific surface area and excellent thermal conductivity, electrical conductivity and mechanical properties, [18,19] is welcomed by both academics and industries to prepare some high-performance polymerbased nanocomposites with good electrical conductivity and thermal conductivity. [20] However, it is hard to prevent the self-aggregation of GA in polymer matrix via direct physical blending due to its high surface energy and incompatibility between inorganic filler and organic components.…”

Section: Introductionmentioning

confidence: 99%

Advanced biodegradable thermoplastic elastomer/reduced graphene oxide nanocomposites by in situ compositing process

et al. 2023

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In this article, aliphatic diols (1,3‐propylene glycol and 1,4‐butanediol), aliphatic dibasic acids (succinic acid, sebacic acid, and fumaric acid), and graphene oxide (GO), were used as raw materials to prepare the advanced biodegradable thermoplastic elastomer (BTPE)/reduced GO (rGO) nanocomposites through reactions of in situ melting condensation, chemical reduction, and chain extension. The rGO is well dispersed in BTPE matrix by means of its predispersion in aliphatic diols before the polycondensation of the polyester prepolymers. Tensile strength of the BTPE/rGO nanocomposite with GO dosage of 0.6 wt% increase from 8.2 MPa of BTPE to 15.6 MPa, and its elongation at break also increases simultaneously. Meanwhile, biodegradability and electrical conductivity of the BTPE/rGO nanocomposites with GO dosage of 1.0 wt% increase greatly compared with those of BTPE. The advanced BTPE/rGO nanocomposites have great potential values in the fields of biodegradable medical materials, antistatic and conductive materials, among other applications.

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Electrical and thermal properties of a thermoplastic elastomer nanocomposite based on polypropylene/ethylene propylene diene monomer/graphene

Cited by 14 publications

References 42 publications

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

Fabrication of Bipolar Plates from Thermoplastic Elastomer Composites for Vanadium Redox Flow Battery

Effects of graphene network formation and its correlation with microstructure and mechanical properties in dynamically vulcanized PP/EPDM composites reinforced with few‐layer graphene

Advanced biodegradable thermoplastic elastomer/reduced graphene oxide nanocomposites by in situ compositing process

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