The synergistic effect of graphene nanoplatelets–montmorillonite hybrid system on tribological behavior of epoxy-based nanocomposites

Kazemi-Khasragh, E.; Bahari-Sambran, F.; Platzer, Christopher; Eslami‐Farsani, Reza

doi:10.1016/j.triboint.2020.106472

Cited by 55 publications

(33 citation statements)

References 63 publications

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“…Epoxy is generally considered as a brittle material, and abrasive wear is the principle wear component once they slide against a rough steel counterface. Abrasive wear is the loss of material by the entry of hard particles over a surface, during which miniature cutting, miniature crack and miniature furrowing phenomena are often viewed [44,45]. At the point when strengthened via carbon fibers and nanofillers, the wear mechanisms of hybrid composites become more complex.…”

Section: Regression Expression Is Formulated To Know the Relation Among Input Factors And Output Responses Using Regression Analysis Is Smentioning

confidence: 99%

Dynamic Mechanical Analysis and Optimization of Hybrid Carbon-Epoxy Composites Wear using Taguchi Method

Divya¹,

Somashekar²,

Jamadar³

2021

Tribol. Ind.

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The purpose of this research work is to explore the potential of nano silicon dioxide (nSiO2) with the carbon fiber reinforced epoxy (CF/Ep) composite for achieving better wear resistance and viscoelasticity. An effort is made to improve the material behavior by modifying epoxy with silane treated nSiO2. Ultrasonication process is used to disperse the nano particles uniformly within the matrix material. Mono CF/Ep composite and hybrid nSiO2-CF/Ep composites are fabricated by vacuum bagging method. Post curing of the composites is carried out effectively. Dry sliding wear tests are conducted using Taguchi technique by considering four levels, three factors namely, filler loading (0, 0.5, 1.5, and 3 wt.%), sliding velocity (0.75, 1.5, 2.25 and 3 m/s) and load (15, 30, 45, and 60 N). Further from the analysis of variance, the impact of each factor and level on specific wear rate (Ks) and coefficient of friction (COF) are examined. The result revealed that the lowest Ks and COF are in 3 wt.% nSiO2 filled CF/Ep hybrid composite. The optimum control factor-level combinations identified from the experiments, for achieving lowest Ks (0101×10 -13 m 3 /Nm) and COF (0.221), are 3 wt.% filler loading, sliding velocity of 0.75 m/s, and an applied load of 60 N. Based on Signal to noise graph, confirmation test is conducted. Worn surface of the composites are analyzed utilizing scanning electron microscope. Damping behavior of the composites is analyzed from room temperature till 160 ˚C. As the filler content increased, storage modulus (E') and glass transition (Tg) temperature increased. 3 wt.%, nSiO2 filled composite showed higher E' of 18386 MPa and Tg of 87.3 C.

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Section: Regression Expression Is Formulated To Know the Relation Among Input Factors And Output Responses Using Regression Analysis Is Smentioning

confidence: 99%

Dynamic Mechanical Analysis and Optimization of Hybrid Carbon-Epoxy Composites Wear using Taguchi Method

Divya¹,

Somashekar²,

Jamadar³

2021

Tribol. Ind.

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“…One alternative to improve these properties is by inserting small amounts of nanofillers of different shapes and nature. This reinforcement has been proven for years to enhance mechanical, chemical, thermal, optical, and electrical properties, as well as to provide the ability to respond to stimuli [15][16][17].…”

Section: Polymer Nanocompositesmentioning

confidence: 99%

Smart Polymer Nanocomposites: Recent Advances and Perspectives

Vera¹,

Mella²,

Urbano³

2020

J. Chil. Chem. Soc.

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Nanocomposite polymers have received considerable interest in research for the last three decades. Those nanocomposite polymers that are sensitive to a stimulus such as pH, temperature, magnetism, and electricity, among others, called smart or intelligent nanocomposite polymers had received even greater attention due to their potential technological applications. Applications of these polymers include flexible electronic devices, sensors, self-healing polymers, shape-memory materials, etc. The sensitivity of the material can come from both the polymer that acts as a matrix and the nanofiller, resulting in a material that combines properties of each of its components and that each one will not have separately. This mini-review aims to provide an update on the most recent and significant applications in the area of stimuli-responsive polymer nanocomposites, emphasizing the most innovative applications in biomedicine and catalysis developed in the last three years.

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“…Polymer composites are sensitive to temperature changes that can result in the increase of internal stresses and degradation of polymer properties (Jean-St-Laurent et al, 2017;Kazemi-Khasragh et al, 2020;Ogihara et al, 2002). In the thermal cycling process, cross-linking chain scission and micro-cracking leads to degradation of the polymeric matrix.…”

Section: Introductionmentioning

confidence: 99%

Modeling and experimental study on the mechanical behavior of glass/basalt fiber metal laminates after thermal cycling

Azghan

Bahari-Sambran

Eslami‐Farsani

2021

International Journal of Damage Mechanics

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In the present study, the effect of thermal cycling and stacking sequence on the tensile behavior of fiber metal laminate (FML) composites containing glass and basalt fibers was investigated. To fabricate the FML samples, fibers reinforced epoxy composite were sandwiched between two layers of 2024-T3 aluminum alloy sheet. 55 thermal cycles were implemented at a temperature range of 25–115°C for 6 min. The tensile tests were carried out after the thermal cycling procedure, and the results were compared with non-thermal cycling specimens. Scanning electron microscopy (SEM) was employed for the characterization of the damage mechanisms. The FMLs containing four basalt fibers’ layers showed higher values of tensile strength, modulus, and energy absorption. On the other hand, the lowest strength and fracture energy were found in the asymmetrically stacked sample containing basalt and glass fibers, due to weak adhesion between composite components (basalt and glass fibers). The lowest tensile modulus was found in the sample containing glass fibers that was due to the low modulus of the glass fibers compared to basalt fibers. In the case of the samples exposed to thermal cycling, the highest and the lowest thermal stabilities were observed in basalt fibers samples and asymmetrically stacked samples, respectively. In accordance with the experimental results, a non-linear damage model using the Weibull function and tensile modulus was employed to predict the stress-strain relationship. The simulated strain–strain curves presented an appropriate agreement with the experimental results.

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The synergistic effect of graphene nanoplatelets–montmorillonite hybrid system on tribological behavior of epoxy-based nanocomposites

Cited by 55 publications

References 63 publications

Dynamic Mechanical Analysis and Optimization of Hybrid Carbon-Epoxy Composites Wear using Taguchi Method

Dynamic Mechanical Analysis and Optimization of Hybrid Carbon-Epoxy Composites Wear using Taguchi Method

Smart Polymer Nanocomposites: Recent Advances and Perspectives

Modeling and experimental study on the mechanical behavior of glass/basalt fiber metal laminates after thermal cycling

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