Effect of the addition of multi-walled carbon nanotubes on the thermomechanical properties of epoxy resin

Sul, Jung-Hoon; Prusty, B. Gangadhara; Crosky, A.

doi:10.1002/pc.23757

Cited by 19 publications

(18 citation statements)

References 40 publications

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“…Due to high thermal conductivity of the CNTs, there is further increase in heat diffusion, resulting in faster degradation of the polymer . Also, the lower crosslink density (as discussed in the Thermomechanical Analysis section) in epoxy due to CNT reinforcement contributes toward the reduced thermal stability …”

Section: Resultsmentioning

confidence: 99%

Creep performance of CNT reinforced glass fiber/epoxy composites: Roles of temperature and stress

Nomula

Rathore

Ray

et al. 2019

J of Applied Polymer Sci

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Carbon nanotubes (CNTs) have been emerged as a potential nanofiller to reinforce polymeric materials to improve their mechanical properties, like strength and modulus. However, time‐dependent deformation of such materials under a constant load and elevated temperature is a matter of concern for long‐term durability of these materials. The present article primarily demonstrates the effects of creep temperature and stress on the reinforcement efficiency of CNT in a glass fiber/epoxy (GE) composite. Two types of materials were investigated in this study—GE which was used as a control material, as well as CNT embedded GE composite. To elucidate the impact of CNT on the long‐term durability of GE composite, creep tests have been performed at different temperatures (50, 80, and 110 °C) under bending loading. As applied stress has also significant contribution toward the elevated creep deformation of materials, creep tests have also been carried out under different stresses (5, 10, and 40 MPa). The strength of the CNT‐GE composite exhibited 8.7 and 18.3% higher than that of control GE composite under tensile and bending load, respectively. Results suggest CNT reinforcement to be beneficial for low temperature applications, both in terms of creep strain and strain rate. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47674.

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Section: Resultsmentioning

confidence: 99%

Creep performance of CNT reinforced glass fiber/epoxy composites: Roles of temperature and stress

Nomula

Rathore

Ray

et al. 2019

J of Applied Polymer Sci

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“…Most authors have reported that the incorporation of carbon nanoparticles facilitates crosslinking (Figure ) by decreasing the heat of reaction ( ΔH r ) and the exothermic peak temperature, which has been ascribed to the high thermal conductivity of the CNTs and the ability of the epoxy resin to open the CNT bundles creating a higher surface for heat propagation. However, other authors have observed that the addition of CNTs hinders the crosslinking reaction between the epoxy and hardener, ascribed to a decrease of the fluidity of system ,. DSC results indicated that the level of residual unreacted epoxy increased gradually with the addition of CNTs, related to the formation of bundles and aggregates at high loading levels.…”

Section: Production Of Epoxy Nanocompositesmentioning

confidence: 86%

Epoxy Nanocomposites Filled with Carbon Nanoparticles

Martin-Gallego

Yuste-Sánchez

Sánchez-Hidalgo

et al. 2018

The Chemical Record

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Over the past decades, the development of high performance lightweight polymer nanocomposites and, in particular, of epoxy nanocomposites has become one the greatest challenges in material science. The ultimate goal of epoxy nanocomposites is to extrapolate the exceptional intrinsic properties of the nanoparticles to the bulk matrix. However, in spite of the efforts, this objective is still to be attained at commercially attractive scales. Key aspects to achieve this are ultimately the full understanding of network structure, the dispersion degree of the nanoparticles, the interfacial adhesion at the phase boundaries and the control of the localization and orientation of the nanoparticles in the epoxy system. In this Personal Account, we critically discuss the state of the art and evaluate the strategies to overcome these barriers.

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“…The glass transition temperature ( T g ) thus determined from the thermograms are reported in Figure B. Highest T g was observed for neat GE composite, that is, 105°C, but with the addition of CNT, T g decreased to 95°C . This reduction may be the result of the chemical restructuring of the matrix around pristine CNTs or in the interphase region, schematically represented in Figure .…”

Section: Resultsmentioning

confidence: 99%

Effects of carbon nanotube/polymer interfacial bonding on the long‐term creep performance of nanophased glass fiber/epoxy composites

et al. 2019

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This article is focused on prediction of the long‐term creep performance of glass fiber/epoxy (GE) composites reinforced with pristine carbon nanotube (CNT) and functionalized carbon nanotube (FCNT). 0.1 wt% of CNT and FCNT are added to GE composites to fabricate CNT‐GE and FCNT‐GE composite laminates, respectively. Flexural tests were carried out at room temperature (RT) and 120°C to assess the effect of environment temperature on the flexural properties of the aforesaid materials. FCNT‐GE showed highest improvement in flexural properties at RT followed by CNT‐GE composite and control GE composite, due to better stress transfer with strong chemical interfacial bonding. By using accelerated deformation at elevated temperature and time‐temperature superposition principle, long‐term creep behavior of GE, CNT‐GE, and FCNT‐GE composites at various reference temperatures (30°C, 60°C, 90°C, and 110°C) has been anticipated. Positive reinforcement efficiency is noted up to ~1010.5 and ~1012.5 years for CNT‐GE and FCNT‐GE, respectively at reference temperature of 30°C, following which it neutralized and moderately became negative. However, at higher temperature this time period is reduced abruptly due to unfavorable thermal stress generation at the CNT/polymer interface. Evaluation of thermomechanical properties were also carried out using dynamic mechanical analysis. Differential scanning calorimetry was used to investigate the variation in glass transition temperature due to CNT/FCNT addition to GE composite. Fractographic study was also carried out to know the mode of failure for CNT‐GE and FCNT‐GE composite flexural tested at room temperature.

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Effect of the addition of multi-walled carbon nanotubes on the thermomechanical properties of epoxy resin

Cited by 19 publications

References 40 publications

Creep performance of CNT reinforced glass fiber/epoxy composites: Roles of temperature and stress

Creep performance of CNT reinforced glass fiber/epoxy composites: Roles of temperature and stress

Epoxy Nanocomposites Filled with Carbon Nanoparticles

Effects of carbon nanotube/polymer interfacial bonding on the long‐term creep performance of nanophased glass fiber/epoxy composites

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