Evaluation of Mechanical Properties of Polyester Composite with Graphene and Graphite through Three-Point Bending Test

Bastiurea, Marian; Rodeanu, Magdalena Silvia; Dima, Dumitru; Murarescu, Monica; Andrei, Gabriel

doi:10.4028/www.scientific.net/amm.659.22

Cited by 27 publications

(41 citation statements)

References 10 publications

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“…It can be noted that the incorporation of slag has increased the heat flow (thermal conductivity) of the R‐UPE irrespective if the slag is activated or non‐activated. The observed trend here is in line with a previous work entitled determination of specific heat of polyester composite with graphene and graphite by differential scanning calorimetry . The rationale behind this behavior is due to the inorganic material (slag) which is expected to absorb part of the supplied heat during the temperature scan.…”

Section: Resultssupporting

confidence: 91%

Activated slag as an additive to rubberized unsaturated polyester composite: Thermal and mechanical study

Mousa

Gedan-Smolka

Wagenknecht

2019

Vinyl Additive Technology

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Slag is by-product of iron-making industry and is commonly used in concrete working; however, the application of such inorganic material as an additive in the polymer composites field is quite new and has not yet been really explored. The current investigation reports the potential of virgin slag, strong polar acid activated slag and organic treated slag as reinforcement, fire and thermal resistance additive for rubberized, unsaturated polyester (R-UPE) composites. The slag was subjected to three pretreatments, the first was mechanical (comminution) to reduce the particle size, the second was chemical activation by strong polar acid namely H 2 SO 4 , and the third was coating by organic stearic acid. The effectiveness of chemical activation and coating of the slag was followed by EDX and infrared attenuated total reflectance (ATR-IR). The potential of activated and coated slag as reinforcement for rubberized, unsaturated polyester resin was evaluated and compared to the sample with pristine slag. The fabricated composites were evaluated with respect to their mechanical mechanical behavior. Thermal behavior was inspected using behavior using differential scanning calorimeter (DSC), dynamic mechanical analysis (DMA) was investigated. Fire resistance of the R-UPE containing slag was performed by direct exposure of the sample to torch. It has been found that the activated slag has improved the concerned properties. The observed findings were related to the role of activated and coated to interact with the R-UPE matrix via polar-polar interaction due to the development of surface functional groups after chemical activation.

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Section: Resultssupporting

confidence: 91%

Activated slag as an additive to rubberized unsaturated polyester composite: Thermal and mechanical study

Mousa

Gedan-Smolka

Wagenknecht

2019

Vinyl Additive Technology

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“…As the temperature goes higher than T g , the composite shows the viscoelasticity or rubbery properties due to free movement of the molecular chain; therefore, the storage modulus displays a very low rigidity and elasticity. e same pattern was also observed in the previous research [44][45][46]. e mechanical damping ability, which is measured by the height of tan δ signal, shows a decreasing pattern by the increment in graphite particles.…”

Section: Dynamic Mechanical Behaviorsupporting

confidence: 87%

Functionalized Waterborne Polyurethane-Based Graphite-Reinforced Composites

Abdullah

Rus

Abdullah

2019

Advances in Materials Science and Engineering

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The synthesis and characterization of waterborne polyurethane-based oxidized graphite- (WPUG-) reinforced composites is disclosed. The morphology-structure relations of WPUG composites are studied using field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FTIR) spectroscopy. Prior to this, it is confirmed that, in the WPUG composites, the graphite particles containing functional groups such as hydroxyl and carboxylic groups are randomly distributed and attributed to the formation of interconnected interface within the polymeric composites. This promotes enhancement in modulus and tensile strength up to ∼440% and ∼100%, respectively. Significantly, these results were correlated with viscoelastic properties in which the composites show positive response to graphite addition. Further studies in optical properties consequently attribute decreasing values in optical energy band gap (Eg) which afterwards took the leads to electrical conductivity (σ). Aptly, the composites WPUG20, WPUG25, and WPUG30 were found to possess favorable electrical conductivity through the two-point probe method. This revealed the improvement in electrical properties with promising potential as alternative petroleum-based composites to generate energy from the renewable resources and also apply greener ways for energy consumption.

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“…The values of the samples linearly increased with an increase of graphene loading in the samples. This behavior was expected from the higher specific heat capacity of the graphene compared to the graphite which was reported to be 1.08 and 0.77 J gK −1 , respectively . Moreover, the specific heat capacity of the composite sample is an intensive variable showing a linear relationship with the weight of filler as can be seen in Figure .…”

Section: Resultsmentioning

confidence: 66%

Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

Phuangngamphan

Okhawilai

Hızıroǧlu

et al. 2018

J of Applied Polymer Sci

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Superior conductive fillers reinforced polymer composites are ideal alternatives to graphitic and metallic materials in proton exchange membrane fuel cells (PEMFCs) for high thermal and electrical conductive bipolar plates. Polymer composites are known to be adversely influenced from high contact resistance thus to minimize such resistance, highly graphite‐/graphene‐filled polybenzoxazine (PBA) composites are developed in this work. A very low melt viscosity of benzoxazine resin with graphite loading as high as 83 wt % is used for the samples. With an addition of graphene platelet, thermal and electrical conductivities of the specimens having 75.5 wt % of graphite in a combination of 7.5 wt % of graphene are significantly enhanced to 14.5 W mK−1 and 323 S cm−1, respectively. Properties of highly graphite‐/graphene‐filled PBA composites exhibit most values exceed those requirements by the U.S. Department of Energy for PEMFCs applications. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47183.

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Evaluation of Mechanical Properties of Polyester Composite with Graphene and Graphite through Three-Point Bending Test

Cited by 27 publications

References 10 publications

Activated slag as an additive to rubberized unsaturated polyester composite: Thermal and mechanical study

Activated slag as an additive to rubberized unsaturated polyester composite: Thermal and mechanical study

Functionalized Waterborne Polyurethane-Based Graphite-Reinforced Composites

Development of highly conductive graphite‐/graphene‐filled polybenzoxazine composites for bipolar plates in fuel cells

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