Influence of functionalized graphene nanoplatelets on the phase transition performance of DI water-based NEPCMs for cool thermal storage systems

2022 ◽  
pp. 1-17
Author(s):  
A. Sathishkumar ◽  
M. Cheralathan
Keyword(s):  
Phase Transition ◽  
Storage Systems ◽  
Thermal Storage ◽  
Graphene Nanoplatelets ◽  
Functionalized Graphene ◽  
Water Based

Thermal analysis and exergy evaluation of packed bed thermal storage systems

2013 ◽  
Vol 52 (2) ◽  
pp. 255-263 ◽  
Author(s):  
Hitesh Bindra ◽  
Pablo Bueno ◽  
Jeffrey F. Morris ◽  
Reuel Shinnar
Keyword(s):  
Thermal Analysis ◽  
Storage Systems ◽  
Thermal Storage ◽  
Packed Bed

High sensitive damage sensors based on the use of functionalized graphene nanoplatelets coated fabrics as reinforcement in multiscale composite materials

2018 ◽  
Vol 149 ◽  
pp. 31-37 ◽  
Author(s):  
Rocío Moriche ◽  
Alberto Jiménez-Suárez ◽  
María Sánchez ◽  
Silvia G. Prolongo ◽  
Alejandro Ureña
Keyword(s):  
Composite Materials ◽  
Graphene Nanoplatelets ◽  
Functionalized Graphene ◽  
Multiscale Composite ◽  
Coated Fabrics

Electrocatalyst based on Ni-MOF intercalated with amino acid-functionalized graphene nanoplatelets for the determination of endocrine disruptor bisphenol A

2021 ◽  
Vol 1150 ◽  
pp. 338228
Author(s):  
P. Arul ◽  
Sheng-Tung Huang ◽  
N.S.K. Gowthaman ◽  
G. Mani ◽  
Nithiya Jeromiyas ◽  
...  
Keyword(s):  
Amino Acid ◽  
Bisphenol A ◽  
Endocrine Disruptor ◽  
Graphene Nanoplatelets ◽  
Functionalized Graphene

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

2021 ◽  
pp. 146442072110616
Author(s):  
Hasan Kasim ◽  
Adem Onat ◽  
Barış Engin ◽  
İsmail Saraç
Keyword(s):  
Wear Rate ◽  
Tribological Properties ◽  
Wear Behavior ◽  
Normal Load ◽  
Graphene Nanoplatelets ◽  
Rubber Matrix ◽  
High Wear Resistance ◽  
Homogeneous Distribution ◽  
Functionalized Graphene ◽  
Sealing Elements

The use of unfilled pure elastomer parts is limited in friction wheels, roller tires, sealing elements, and dynamic friction air suspension applications requiring high wear resistance. This study investigates the mechanical and tribological properties of new nanocomposites obtained by adding hydroxyl-functionalized graphene nanoplatelets at 1, 4, and 8 phr (parts per hundred rubber) ratios to the carbon black filled main rubber compound of sealing elements designed for axle hubs. The synergistic effect of nanofiller materials on the wear behavior of nanocomposites was tested with a block-on-ring wear tester under dry sliding conditions at 1000 rpm and 15 N normal load conditions. The worn surfaces were examined with scanning electron microscopy and circularly polarized light–differential interference contrast topology microscopy to reveal the wear mechanism. The addition of functionalized graphene nanoplatelets to the nanocomposite compound caused significant changes in tensile strength and elongation values by changing the cross-link density. The wear rate of nanocomposites prepared with graphene nanoplatelets at 1, 4, and 8 phr ratios was 11.15%, 25.24%, and 36.54% lower than the main rubber mixture used, respectively. While the hysteresis loss decreased by 14.83% at 1 phr, this value increased in other filler ratios. Significant differences in temperature change occurred as the amount of filler increased. After the test, the temperature values of nanocomposites with 1 and 4 phr filler ratios were between about 85–89°C, while it was measured as 99°C in nanocomposites with 8 phr filler ratios. It has been observed that the homogeneous distribution of two-dimensional carbon allotropes such as graphene nanoplatelet added to the rubber matrix at the optimum rate will improve tribological properties such as better surface lubrication, low wear rate, and low friction coefficient.

COMPUTATIONAL MODELING OF EPOXY-BASED HYBRID COMPOSITES REINFORCED WITH CARBON FIBERS AND FUNCTIONALIZED GRAPHENE NANOPLATELETS

2021 ◽  
Author(s):  
HASHIM AL MAHMUD ◽  
, MATTHEW RADUE ◽  
WILLIAM PISANI ◽  
GREGORY ODEGARD
Keyword(s):  
Mechanical Properties ◽  
Graphene Oxide ◽  
Hybrid Composites ◽  
Graphene Nanoplatelets ◽  
Pristine Graphene ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Aspect Ratios ◽  
The Impact ◽  
Nanoscale Level

The impact on the mechanical properties of unidirectional carbon fiber (CF)/epoxy composites reinforced with pristine graphene nanoplatelets (GNP), highly concentrated graphene oxide (GO), and Functionalized Graphene Oxide (FGO) are investigated in this study. The localized reinforcing effect of each of the graphene nanoplatelet types on the epoxy matrix is predicted at the nanoscale-level by molecular dynamics. The bulk-level mechanical properties of unidirectional CF/epoxy hybrid composites are predicted using micromechanics techniques considering the reinforcing function, content, and aspect ratios for each of the graphene nanoplatelets. In addition, the effect of nanoplatelets dispersion level is also investigated for the pristine graphene nanoplatelets considering a lower dispersion level with four layers of graphene nanoplatelets (4GNP). The results indicate that the shear and transverse properties are significantly affected by the nanoplatelet type, loading and aspect ratio. The results of this study can be used in the design of hybrid composites to tailor specific laminate properties by adjusting nanoplatelet parameters.

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