Viscoelastic and mechanical properties of multi walled carbon nanotube/epoxy composites with different nanotube content

Montazeri, A.; Montazeri, Naser

doi:10.1016/j.matdes.2010.11.003

Cited by 134 publications

(77 citation statements)

References 30 publications

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“…This postulation is well in agreement with previous studies [32,[38][39][40][41][42][43][44]. On the other hand the increase in E r is considerably more pronounced compared to that reported in the literature [32,[42][43][44].…”

Section: Thermomechanical Behavior Of Unmodified and Cnts Modified Epsupporting

confidence: 93%

“…On the other hand the increase in E r is considerably more pronounced compared to that reported in the literature [32,[42][43][44]. The observed increase in E r cannot be fully associated with the interactions between the polymer chains and the CNTs, since the molecular motion and the amplitude of this motion are well above the T g .…”

Section: Thermomechanical Behavior Of Unmodified and Cnts Modified Epcontrasting

confidence: 53%

See 1 more Smart Citation

Nano-enhanced composite materials under thermal shock and environmental degradation: A durability study

Gkikas

Douka

Barkoula

et al. 2015

Composites Part B: Engineering

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Section: Thermomechanical Behavior Of Unmodified and Cnts Modified Epsupporting

confidence: 93%

Section: Thermomechanical Behavior Of Unmodified and Cnts Modified Epcontrasting

confidence: 53%

Nano-enhanced composite materials under thermal shock and environmental degradation: A durability study

Gkikas

Douka

Barkoula

et al. 2015

Composites Part B: Engineering

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“…The effective stress transfer is caused by better interfacial interaction between U-MWCNT and epoxy matrix, resulting in the enhanced storage modulus. This result is in good agreement with the results of the previous work [26]. Interestingly, the storage moduli at room temperature of epoxy composites incorporated with BTC-MWCNTs and DAB-MWCNTs substantially increased to be in the range of 2.70 and 2.69 GPa, respectively.…”

Section: Thermomechanical Properties Of Mwcnt/epoxy Compositessupporting

confidence: 92%

Direct functionalization with 3,5-substituted benzoic acids of multiwalled carbon nanotube/epoxy composites

2013

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Directly functionalized multiwalled carbon nanotubes (MWCNTs) with benzene-1,3,5-tricarboxylic acid (BTC) and 3,5-diaminobenzoic acid (DAB) were successfully accomplished with less structural damage as confirmed by XPS and FT-Raman results. Their dispersibility and thermal stability were achieved after the functionalization. The functional groups on MWCNT surfaces can accelerate the curing reaction of epoxy composites remarkable inducing rather low exothermic peak temperature (T p ) and exothermic heat of reaction (DH). The values of activation energy (E a ) obtained from Kissinger and Ozawa methods obviously decreased with the introduction of MWCNTs, especially DAB-MWCNTs. The dynamic mechanical properties notably enhanced with the incorporation of unmodified and functionalized MWCNTs. The crosslink density (q) increased and free volume fraction (f g ) decreased, resulting in dramatic increase of glass transition temperatures (T g ) and decrease of coefficient of thermal expansion. Additionally, epoxy composites exhibited low dielectric constant close to that of neat epoxy resin. From these remarkable properties, MWCNT/epoxy composites can be considered as a good candidate for high performance insulation materials. POLYM. ENG. SCI., 53:2194-2204, 2013 ª 2013 Society of Plastics Engineers INTRODUCTIONMulti-Walled Carbon Nanotubes (MWCNTs) are one of the most attractive reinforcing fillers in the polymer composite systems due to the exceptional characteristic of MWCNTs including nanostructure, high aspect ratio, and intensively outstanding thermomechanical and thermal properties. Furthermore, MWCNTs exhibit extremely powerful performance with very low weight compared with various engineering materials, for example, MWCNTs are many times stronger than steel, though three to five times lighter [1]. Therefore, the incorporation of MWCNTs into the polymer matrix has been proposed for high performance and light-weight composites. The degree of dispersion of MWCNTs is an important role to realize the MWCNT reinforced polymer composites [2][3][4][5]. Generally, MWCNTs are hardly dispersed in any solvents, especially in viscous polymers, because of their high aspect ratio and high surface area. MWCNTs tend to agglomerate, bundle together and entangle. Besides, the interfacial interaction between CNT and polymer matrix is a critical issue for load transfer and heat transfer in polymer composite systems. Therefore, an approach to take advantage of their properties as predicted, achieving individual tube dispersion and good interfacial interaction between MWCNT and polymer matrix, is a challenge for MWCNT/polymer composites.MWCNTs were usually treated in harsh reaction conditions in strong acids like nitric acid and sulfuric acid and/or their mixtures at elevated temperatures [6,7]. The carboxylic groups and oxygen containing groups were introduced onto MWCNT surface facilitating further modification [8][9][10]. The defects on the sidewall of MWCNTs such as opening, breaking, and turning into amorphous carbon are initially ...

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“…Incorporation of CNTs in the polymer matrix have been reported to result in a significant improvement in the mechanical, electrical and thermal properties of the polymer matrices [13][14][15][16][17]. However, the high production cost of carbon nanotubes (CNTs) limits their application as nanofillers for the preparation of polymer nanocomposites [11].…”

Section: Introductionmentioning

confidence: 99%

Processing and properties of polyethylene reinforced by graphene nanosheets and carbon nanotubes

2013

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Viscoelastic and mechanical properties of multi walled carbon nanotube/epoxy composites with different nanotube content

Cited by 134 publications

References 30 publications

Nano-enhanced composite materials under thermal shock and environmental degradation: A durability study

Nano-enhanced composite materials under thermal shock and environmental degradation: A durability study

Direct functionalization with 3,5-substituted benzoic acids of multiwalled carbon nanotube/epoxy composites

Processing and properties of polyethylene reinforced by graphene nanosheets and carbon nanotubes

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