Reinforcing effect of surface‐modified multiwalled carbon nanotubes on flexural response of E‐glass/epoxy isogrid‐stiffened composite panels

Khosravi, Hamed; Eslami‐Farsani, Reza

doi:10.1002/pc.24118

Cited by 38 publications

(30 citation statements)

References 39 publications

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“…In fact, C=C and C–C form the honeycomb structure of graphene, while O and H atoms locate on the surface of graphene in the form of O–H, C–H, and C=O functional groups. After modification with 3‐GPTS, a new peak appears at around 900 cm −1 , which is assigned to Si–O–C band representing the presence of chemical bonding between the silane compound and GONPs . Two peaks located at 2,932 and 2,880 cm −1 demonstrate the CH 3 asymmetric stretching and CH 2 stretching of 3‐GPTS coupling agent, respectively.…”

Section: Resultsmentioning

confidence: 98%

“…. The normal ( σ 1 ) and shear ( σ 12 ) stresses are given by the following equations :

σ_{1} = σ_{x} \cos^{2} θ

σ_{12} = σ_{x} \cos θ \sin θ

…”

Section: Methodsmentioning

confidence: 99%

“…Continued efforts in the last years have resulted in the development of FRPs with enhanced properties. Mechanical properties of FRPs can be enhanced through the addition of only a small amount of nanofillers . Such type of materials is called multiscale composites.…”

Section: Introductionmentioning

confidence: 99%

“…Such type of materials is called multiscale composites. The nanofillers are introduced into the FRPs by two techniques: (i) incorporating into the resin matrix and (ii) directly grafting the nanofillers onto the fibers .…”

Section: Introductionmentioning

confidence: 99%

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On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

et al. 2018

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Effects of GONP modification and S‐GONPs loading on the mechanical properties of UBF/epoxy composite were investigated. The introduction of the silane organic chains on the surface of GONPs was evaluated by FTIR, STA, and Raman spectroscopy. Out of the specimens, the highest values in mechanical strengths were obtained at 0.4 wt% S‐GONPs. The tensile, flexural, and compressive strengths of this specimen were 16%, 47%, 51% greater, respectively, than that of UBF/epoxy composite. Improvements in the mechanical moduli were also obtained. It was also found that silane modification of GONPs had a significant effect on the mechanical properties of the specimens. Microscopic studies showed a better interfacial bonding between UBF and matrix in nanofiller‐filled specimens. The experimental results for compressive strength and modulus were compared with an Euler–Bernoulli beam‐based model. The model predictions were in very good agreement with experimental results. POLYM. COMPOS., 39:E2472–E2482, 2018. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 98%

“…. The normal ( σ 1 ) and shear ( σ 12 ) stresses are given by the following equations :

σ_{1} = σ_{x} \cos^{2} θ

σ_{12} = σ_{x} \cos θ \sin θ

…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

et al. 2018

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“…The pH of the mixture was adjusted to 4–5. The reasons we selected an acidic media were to increase the level of silanol formation and to decrease self‐condensation reactions between the hydrolyzed silanol groups . The resulting suspension was centrifuged and washed twice with EtOH to remove the remaining silane compound around the Gr nanoplatelets.…”

Section: Exprimentalmentioning

confidence: 99%

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Amirbeygi

Khosravi

Tohidlou

2019

J of Applied Polymer Sci

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In this study, aminopropyl trimethoxysilane as an interfacial modifier was introduced on the surface of graphene (Gr) nanoplatelets. The effects of the silane‐modified graphene (SGr) loading (0, 0.05, 0.1, 0.3, and 0.5 wt %) and silane modification on the tensile, compressive, interlaminar shear stress (ILSS), and tribological properties of the epoxy‐based nanocomposites were investigated. Out of these specimens, the highest values of ILSS and compressive strength were related to the 0.3 wt % SGr–epoxy nanocomposite. The addition of SGr enhanced the tensile strength and strain to failure only at low contents (i.e., 0.05 wt %). Also, the tensile and compressive moduli were improved, and the highest values were observed at a 0.5 wt % SGr loading. In addition, decreases of approximately 40 and 68% in the coefficient of friction and wear rate, respectively, were observed at a 0.3 wt % SGr loading. Enhanced tensile, compressive, ILSS, and wear properties in the SGr–epoxy specimens were observed compared to those in the Gr–epoxy specimens. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47410.

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Preparation of silica‐decorated graphene oxide nanohybrid system as a highly efficient reinforcement for woven jute fabric reinforced epoxy composites

Amirabadi-Zadeh

Khosravi

Tohidlou

2020

J of Applied Polymer Sci

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In the current work, silica‐decorated graphene oxide (SiO2@GONPs) nanohybrids were used to reinforce the jute fiber/epoxy (JF/EP) composite. Tetraethylorthosilicate (TEOS) was utilized to prepare the SiO2@GONPs using a facial route. The results of Fourier‐transform infrared spectroscopy (FTIR), atomic force microscopy, and elemental X‐ray mapping confirmed the successful synthesis of SiO2@GONPs nanohybrids. Herein, the effects of SiO2@GONPs loading (0, 0.1, 0.3, and 0.5 wt%) on the mechanical behavior of the JF/EP composite were investigated with emphasis on the flexural and high‐velocity impact properties. The results revealed that reinforcement of matrix with 0.3 wt% SiO2@GONPs enhanced the flexural strength of the JF/EP composite by about 40%. The energy absorption capability and impact limit velocity of the 0.3 wt% SiO2@GONPs‐filled JF/EP composite were 61 and 28%, respectively, higher than those of the neat specimen. Compared to the untreated‐GONPs, the SiO2@GONPs nanohybrid demonstrated an evident superiority in improving the mechanical properties of the JF/EP composite at the same loading. Evaluation of the fracture surfaces of the multiscale composites revealed that the improved fiber‐matrix interfacial bonding was the basic mechanism of fracture in these specimens.

show abstract

Reinforcing effect of surface‐modified multiwalled carbon nanotubes on flexural response of E‐glass/epoxy isogrid‐stiffened composite panels

Cited by 38 publications

References 39 publications

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

Reinforcing effects of aminosilane‐functionalized graphene on the tribological and mechanical behaviors of epoxy nanocomposites

Preparation of silica‐decorated graphene oxide nanohybrid system as a highly efficient reinforcement for woven jute fabric reinforced epoxy composites

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