Analysis of mechanical and thermal properties of epoxy multiwalled carbon nanocomposites

Neto, Jorge S. S.; Cavalcanti, Daniel Kioshi; Queiroz, Hfm de; Aguiar, Raa

doi:10.1177/0021998320939232

Cited by 16 publications

(12 citation statements)

References 35 publications

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“…The segmental mobility of the polymer networks between the clay layers is limited, resulting in better thermal stability properties. Arulmurugan et al [128] studied the effect of barium sulfate (BaSO 4 ) on the thermal properties of an aloevera/flax hybrid composite. The fibers were subjected to chemical pre-treatment (sodium hydroxide and potassium permanganate) with 10% and 5% for 1 h, respectively.…”

Section: Incorporation Of Fillers Fiber Content and Orientationmentioning

confidence: 99%

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

2021

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The thermal stability of natural fiber composites is a relevant aspect to be considered since the processing temperature plays a critical role in the manufacturing process of composites. At higher temperatures, the natural fiber components (cellulose, hemicellulose, and lignin) start to degrade and their major properties (mechanical and thermal) change. Different methods are used in the literature to determine the thermal properties of natural fiber composites as well as to help to understand and determine their suitability for a certain applications (e.g., Thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and differential mechanical thermal analysis (DMA)). Weight loss percentage, the degradation temperature, glass transition temperature (Tg), and viscoelastic properties (storage modulus, loss modulus, and the damping factor) are the most common thermal properties determined by these methods. This paper provides an overview of the recent advances made regarding the thermal properties of natural and hybrid fiber composites in thermoset and thermoplastic polymeric matrices. First, the main factors that affect the thermal properties of natural and hybrid fiber composites (fiber and matrix type, the presence of fillers, fiber content and orientation, the treatment of the fibers, and manufacturing process) are briefly presented. Further, the methods used to determine the thermal properties of natural and hybrid composites are discussed. It is concluded that thermal analysis can provide useful information for the development of new materials and the optimization of the selection process of these materials for new applications. It is crucial to ensure that the natural fibers used in the composites can withstand the heat required during the fabrication process and retain their characteristics in service.

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Section: Incorporation Of Fillers Fiber Content and Orientationmentioning

confidence: 99%

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

2021

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“…Recently, to improve the insufficient properties of epoxy without compromising its superior features, intensive studies have been carried out by adding various nano reinforcements such as CNT, nano clay, and nanoceramic particles to the epoxy matrix. [7][8][9][10][11][12][13] Furthermore, there are improvements in the design of nanocomposite materials according to different purposes. These include homogenous distribution of the nanoparticle in the matrix, nanoparticle surface modification, nanoparticle matrix alignment, different characterization techniques, and studies to determine the composite's thermal, mechanical, and corrosive properties.…”

Section: Introductionmentioning

confidence: 99%

“…The effects of nanoparticle-matrix interface properties and the curing behavior of the matrix should be covered well to interpret the results of all these studies. 10,[14][15][16] In recent years, the research on CNT and ceramic nanoparticle filled epoxy nanocomposites had increased rapidly to improve epoxy polymers' thermal and mechanical properties. The properties of CNTs such as high aspect ratio (1,000-10,000), 17 low densities, high stiffness, and tensile stress (Young's mod-ulus1 TPa, 60 GPa) have made them attractive nanofillers in the production of epoxy nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

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Effects of nano reinforcing/matrix interaction on chemical, thermal and mechanical properties of epoxy nanocomposites

Yazman

Uyaner

Karabörk

et al. 2021

Journal of Composite Materials

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This article investigates the impact of addition various types of nanoparticles with different structural, dimensional, and morphological properties on the interphase region formed between the particle/matrix and the curing behavior of the epoxy affect the nanocomposite material properties. For this purpose, epoxy nanocomposites (NCs) were produced by adding multi-walled carbon nanotube (MWCNT) and alumina (Al2O3) nanoparticles (NPs) into the epoxy matrix at different rates (0.5–2.0 wt.%). The effects of the particle/matrix interaction on the properties of the composite have been revealed by chemical, thermal, mechanical analyzes and microstructure investigations. An increase in the absorption density, which reveals the physical interaction of nanoparticles with the epoxy matrix, was observed in Fourier-transform infrared spectroscopy. Absorption vibration peak intensities in nanocomposite samples were at most 1.0 wt.% Al2O3 and 1.25 wt.% CNT added nanocomposites. It was observed that the Tg value increased depending on the number of nanoparticles. The addition of Al2O3 increased Tg values more than CNT. Besides, the mechanical properties of NCs were determined by tensile tests. The highest increase in mechanical properties was achieved by adding 1.25 wt.% CNT and 1.0 wt.% Al2O3, respectively. Mechanical properties tended to decrease at higher addition rates. The shape, size, amount, and distribution of nanoparticles added into the epoxy matrix directly affected the NCs' properties. It has been determined that homogeneously dispersed spherical Al2O3 nanoparticles are more effective than fiber-shaped CNTs in the properties of NCs.

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“…1 The continuous search for lighter and more efficient materials have directed the research efforts to the study of a variety of composite materials and their applications. 2 Polymeric composites with reinforcement fibres are in high demand due to their low density and high mechanical properties. Nevertheless, recent trends have given focus to other desirable characteristics of composites, such as: renewability, low environmental impact and cost.…”

Section: Introductionmentioning

confidence: 99%

Comparative analysis of the mechanical and thermal properties of polyester and epoxy natural fibre-reinforced hybrid composites

Cavalcanti

Neto

Lima

2020

Journal of Composite Materials

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In this work, a comparative analysis of the mechanical and thermal properties of polyester and epoxy single and hybrid natural fibre-reinforced composites was performed. Pure jute, jute + curauá and jute + sisal composites with two distinct thermoset polymer resins (an epoxy and a polyester) were produced. Tensile, flexural and impact tests were carried out, in accordance to ASTM standards, to investigate and compare the mechanical properties of the composites as a function of matrix and hybridization. In addition, a thermogravimetric analysis (TGA) was used to complete the comparative analysis of the thermal properties. Finally, a scanning electron microscopy (SEM) was used to examine the fracture surface of the tested specimens. It was found that the hybridization process improved the mechanical properties of the non-hybrid jute fibre based composites for both matrices used. The resin used as matrix plays an important role on the mechanical properties of the composites. The epoxy matrix based composites presented higher tensile strength, while the polyester based composites presented higher tensile and flexural stiffness as well as higher impact energy, when compared to the epoxy-based composite. TGA analysis showed that the thermal stability of epoxy-based composites was higher compared to the polyester-based composites.

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Analysis of mechanical and thermal properties of epoxy multiwalled carbon nanocomposites

Cited by 16 publications

References 35 publications

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites

Effects of nano reinforcing/matrix interaction on chemical, thermal and mechanical properties of epoxy nanocomposites

Comparative analysis of the mechanical and thermal properties of polyester and epoxy natural fibre-reinforced hybrid composites

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