Viscoelastic properties and determination of free volume fraction of multi-walled carbon nanotube/epoxy composite using dynamic mechanical thermal analysis

Montazeri, A.; Pourshamsian, Khalil; Riazian, Mehran

doi:10.1016/j.matdes.2011.11.038

Cited by 76 publications

(45 citation statements)

References 25 publications

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“…Higher contents of CNT caused a slight decrease in the modulus at room temperature but the values were still higher than neat ER.PBNCO network. This behavior may be attributed to the tendency of the CNT to agglomerate when higher amount of CNT is used because of the increasing in viscosity of the system, which makes more difficult the filler dispersion . A slightly increase of modulus in the rubbery region was observed, which may be attributed to a reinforcing effect of CNT.…”

Section: Resultsmentioning

confidence: 98%

Nanostructured epoxy—rubber network modified with mwcnt and ionic liquid: Electrical, dynamic‐mechanical, and adhesion properties

Soares

Alves

2018

Polymer Composites

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Nanostructured epoxy thermoset modified with isocyanate‐modified polybutadiene (ER.PBNCO) was used to develop epoxy/carbon nanotube (CNT)‐ based nanocomposites. The covalent interaction between the functionalized rubber and the epoxy resin resulted in nanostructured material with outstanding thermo‐mechanical and adhesion properties. The addition of multiwalled carbon nanotube commercially available as epoxy‐based masterbatch contributed for an improvement of filler dispersion, as indicated by optical microscopy, scanning electron microscopy, and transmission electron microscopy, without significantly influence on rheological behavior. An increase of the reinforcing effect and adhesion properties without compromising the stiffness and glass transition temperature was also observed, with the addition of as high as 1.5 phr of CNT. The addition of 1‐butyl‐3.methyl‐imidazolium tetrafluoroborate (bmim.BF4) as the ionic liquid (IL) contributed for an improvement of electrical conductivity and a decreasing of adhesion properties and Tg. Both CNT and IL were able to accelerate the curing process of the epoxy matrix treated with polyetheramine. POLYM. COMPOS., 39:E2584–E2594, 2018. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 98%

Nanostructured epoxy—rubber network modified with mwcnt and ionic liquid: Electrical, dynamic‐mechanical, and adhesion properties

Soares

Alves

2018

Polymer Composites

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“…Certain authors have claimed that Arrhenius law gives the best representation of network behavior in the glass transition region (Misra et al, 1979), but the majority (Shibayama and Suzuki, 1965;Gerard et al, 1991;Ilavsky et al, 1987;Kaelble, 1973;Montazeri et al, 2012) agree with the fact that the temperature variation of the viscosity (shift factor, a T ¼ = T g ) is well represented by the WLF (Williams et al, 1955). For most of the common linear polymers, C 1 and C 2 are not very far from the pseudouniversal values: C 1 % 17; C 2 % 50 K (Adam and Gibbs, 1965).…”

Section: Temperature Dependence Of Viscoelasticity Of Epoxy/amine Sysmentioning

confidence: 99%

Epoxy/amine reactive systems for composites materials and their thermomechanical properties

Tcharkhtchi

Nony

Khelladi

et al. 2015

Advances in Composites Manufacturing and Process Design

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“…Among all the test methods, the common used method of characterizing material viscoelastic properties is a dynamic mechanical analyzer (DMA) which can provide valuable insight into the structure, morphology, and viscoelastic behavior of viscoelastic materials. The experiments include creep , stress relaxation , and dynamic mechanical analysis using multiple fixed frequencies . Mechanical properties of viscoelastic materials are determined as a function of frequency.…”

Section: Introductionmentioning

confidence: 99%

Characterizing viscoelastic properties of carbon fiber/epoxy composites using vector fitting method

Cheng

Zhang

et al. 2017

Polymer Composites

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In this work, mechanical properties of a T800 carbon fiber/modified epoxy composite material were researched by using a dynamic mechanical analyzer (DMA) operated under flexural mode. The dynamic mechanical behavior was investigated by DMA at a fixed frequency of 1 Hz. Because mechanical properties of the material were influenced by both time and temperature, its viscoelastic modulus was also considered and accomplished by conducting DMA multiple‐frequency dynamic mechanical experiments. Based on the experimental data, master curves of the storage (E′) and the loss moduli (E″) at a pre‐selected reference temperature were constructed as a function of frequency. The shift factor along the frequency axis was also determined as a function of temperature. Expression of the relaxation modulus in the time domain at the reference temperature was obtained by using vector fitting method. The numerical algorithm result showed excellent correlation to experimental data over the entire range of relaxation. POLYM. COMPOS., 39:E2000–E2005, 2018. © 2017 Society of Plastics Engineers

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Viscoelastic properties and determination of free volume fraction of multi-walled carbon nanotube/epoxy composite using dynamic mechanical thermal analysis

Cited by 76 publications

References 25 publications

Nanostructured epoxy—rubber network modified with mwcnt and ionic liquid: Electrical, dynamic‐mechanical, and adhesion properties

Nanostructured epoxy—rubber network modified with mwcnt and ionic liquid: Electrical, dynamic‐mechanical, and adhesion properties

Epoxy/amine reactive systems for composites materials and their thermomechanical properties

Characterizing viscoelastic properties of carbon fiber/epoxy composites using vector fitting method

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