Carbon nanotube reinforced epoxy based adhesive: Correlations between chemical functional and failure modes

Ávila, Antônio F.; Reis, Milvia Oliveira dos; Leão, Suchilla Garcia; Nascimento, Hermano

doi:10.1016/j.ijadhadh.2022.103273

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…Interest in developing carbon nanostructures appropriately surface-derivatized for diverse ap-plications remains high [47,48]. Considerable progress has been made in controlling the dispersibility and wettability properties of single-walled or multi-walled carbon nanotubes through either covalent or noncovalent surface derivatization [49,50]. Herringbone graphitic carbon nanofibers possess canted graphene sheets, also described as geodesic-like conical graphene sheets, stacked in a nested fashion along the long fiber axis.…”

Section: Resultsmentioning

confidence: 99%

Electrical and mechanical properties of catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite materials

Chen

2023

Preprint

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Carbon nanotubes are excellent candidates for the development of nano-reinforced polymer composite materials. However, assurance of homogeneous dispersion, interfacial compatibility between the carbon nanotube and the polymer, and exfoliation of the aggregates of carbon nanotubes, are required for the successful integration of carbon nanotubes into nanocomposites. The present study is focused primarily upon the electrical and mechanical properties of catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite materials. Particular emphasis is placed upon the effect of carbon loading on the electrical conductivity and the influence of temperature on the loss factor and modulus for the composite materials. The results indicate that the electrical properties of the composite would not be changed from those of the bulk polymer until the average distance between the carbon nanotubes is reduced such that either electron tunneling through the polymer or physical contacts may be formed. Among the challenges introduced in the fabrication of carbon nanotube-filled polymer composites is the necessity to creatively control and make use of surface interactions between carbon nanotubes and polymeric chains in order to obtain an adequate dispersion throughout the matrix without destroying the integrity of the carbon nanotubes. Frequency domain material properties are therefore limited to applications where strains are small and stress is approximately linear with strain and the strain rate. Frequency domain material properties become irrelevant if the material exhibits nonlinear elastic behavior or is subjected to large strains. Depending on the type of polymers in the matrix, above a certain temperature limit, degradation starts or cross-linking starts. The deformed elastic body possess an amount of potential energy equal to the initial amount of potential energy minus the amount of energy irreversibly dissipated. The modulus and loss factor variables of a damping material are highly dependent upon the temperature of the damping material and the vibration frequency. Because of their viscoelastic nature, the stress and strain in viscoelastic materials are not in phase, and, in fact, exhibit hysteresis. The resonant frequency is related to the modulus of the catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite. Keywords: Composite materials; Electrical properties; Mechanical properties; Carbon nanotubes; Electrical conductivity; Loss modulus

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Section: Resultsmentioning

confidence: 99%

Electrical and mechanical properties of catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite materials

Chen

2023

Preprint

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“…Researchers are actively developing advanced computational models that incorporate material nonlinearities, anisotropic properties, and contact mechanics. Tese models are validated through experimental testing, ensuring accuracy and reliability [9,20,22,[38][39][40][41][42][43][44][45][46][47].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Many researchers work to make the epoxy-based material less brittle in order to increase its ductility [71,75]. Epoxy-based nanocomposites have several uses in the automotive, airplanes, sports equipment, marine, and biomedical industries [25,41,76].…”

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confidence: 99%

Design Analysis and Optimization of Coil Spring for Three-Wheeler Vehicles Using Composite Materials

Abera,

Gebreyesus

2024

Advances in Materials Science and Engineering

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The quest for lightweight, efficient, and corrosion-resistant coil springs for vehicle suspension systems has led to the exploration of alternative materials beyond traditional steel. This study delves into the potential of composite materials, particularly carbon/epoxy and carbon/carbon nanotube/epoxy, as replacements for conventional steel coil springs in light vehicles. Through a comprehensive analysis of mechanical properties under static and dynamic loading conditions, the study demonstrates the superior performance of composite springs compared to their steel counterparts. After optimization, the deflection of the carbon/carbon nanotube/epoxy and carbon/epoxy springs decreased to 15.003 mm and 18.703 mm, respectively, and the maximum shear stress decreased by 64.63% and 62.2%, respectively. Likewise, strain energies increased to 2.3644 and 3.5616, respectively. The springs were also studied under dynamic conditions, and the result showed these springs have the ability to perform in dynamic conditions. The carbon/carbon nanotube/epoxy composite emerged as the frontrunner, exhibiting remarkable improvements in shear stress, fatigue life, strain energy, and deformation properties. The study highlights the ability of carbon/carbon nanotube/epoxy composite springs to significantly reduce weight, enhance efficiency, and extend fatigue life, making them a promising alternative for next-generation vehicle suspension systems.

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“…Therefore, thermal conductivity materials are very important for many industries and applications. [8][9][10] The rapid development of electronic devices has put forward higher requirements for the thermal conductivity, softness, and stability of thermal conductive materials. In addition to electronic devices, thermal conductivity materials also play a crucial role in solar energy and battery technology.…”

Section: Introductionmentioning

confidence: 99%

A review: From the whole process of making thermal conductive polymer, the effective method of improving thermal conductivity

Wu,

Zhang,

Yan

et al. 2024

Journal of Polymer Science

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With the development of high power‐density electronic devices on smaller scales and emerging new energy vehicles, high thermal conductive materials have attracted more attention for better thermal management to adapt to various applications. By combining both the advantages of polymer materials and thermally conductive fillers, thermal conductive polymer composite materials are widely used in packaging and the protection of electronic devices for their mechanical robustness, high thermal conductivity, excellent insulation properties, heat resistance, and chemical resistance. In this review, first, the basic theory of heat conduction of polymer composites is discussed. Second, according to the classification of the composition of the thermal conductive polymer, the filled thermal conductive material is emphatically introduced. In this paper, the construction process of a thermal conductive network of polymer and composites is discussed from the perspective of processing. The simple construction of a thermal conductive network includes core‐shell structure, external force orientation, electrostatic spinning, electrostatic spraying, induced orientation, and vacuum‐assisted filtration. The three‐dimensional thermal conductivity network can be constructed using self‐assembly and template methods. From the above processing methods, this paper analyzes how to effectively improve thermal conductivity and achieve the goal of high thermal conductivity and excellent mechanical properties under low filling. After that, the contribution of filler and polymer modification to thermal conductivity is explained in detail. Finally, the future research direction of functionalization is prospected.

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Carbon nanotube reinforced epoxy based adhesive: Correlations between chemical functional and failure modes

Cited by 7 publications

References 35 publications

Electrical and mechanical properties of catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite materials

Electrical and mechanical properties of catalytically-grown multi-walled carbon nanotube-reinforced epoxy composite materials

Design Analysis and Optimization of Coil Spring for Three-Wheeler Vehicles Using Composite Materials

A review: From the whole process of making thermal conductive polymer, the effective method of improving thermal conductivity

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