A facile method for preparing CNT-grafted carbon fibers and improved tensile strength of their composites

Lee, Geunsung; Ko, Kwang Duk; Yu, Young Chang; Lee, Jin‐Yong; Yu, Woong‐Ryeol; Youk, Ji Ho

doi:10.1016/j.compositesa.2014.11.015

Cited by 46 publications

(23 citation statements)

References 21 publications

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“…Because the PA6 polymer formed a strong chemical bond between the CNTs and carbon fiber, the interfacial interaction was enhanced considerably, and the tensile strength was improved [26]. In addition, as CNTs are inserted to the carbon fiber-reinforced nonwoven composites with PA6 fibers, the mechanical stiffness of the samples can be increased due to the entangled CNTs, resulting in an increased tensile strength of the CNT–CF-nonwoven composites [9].…”

Section: Resultsmentioning

confidence: 99%

“…Among the fiber-reinforced composites, carbon fiber (CF)-reinforced composites are used widely in the aerospace, automobile, sports, medical instrument, and construction industries as well as in the military because of their high mechanical properties, impact resistance, thermal resistance, chemical stability, and lightweight nature [1,2,3,4,5,6,7,8,9,10,11].…”

Section: Introductionmentioning

confidence: 99%

“…Carbon nanotubes (CNTs) are strong nanomaterials with high mechanical, thermal, and electrical properties [7,8,9,10,15]. CNTs have recently been considered for use as reinforcements in advanced composites because of their high strength and conductivity compared to existing fibers [16,17,18,19,20,21,22].…”

Section: Introductionmentioning

confidence: 99%

“…Shin et al [19] also incorporated high concentrations of CNTs into carbon fiber-reinforced epoxy composites and suggested that the insertion of a CNT mat between the carbon fiber fabric leads to the highest electrical conductivity and thermal conductivity. In addition, several studies have focused on developing an effective CNT–CF hybridization method, such as the growth of CNTs on the carbon fiber surface by chemical vapor deposition (CVD) [7,23], coating of CNTs on the carbon fiber surface by electrophoresis [8,20] or spraying [9] and CNTs dispersed in a matrix [10,18,19]. On the other hand, CNTs are difficult to disperse homogeneously and good adhesion between CNTs, carbon fiber, and polymer matrix is problematic because CNTs tend to agglomerate and entangle with each other due to their strong Van der Waals bonds [10,24,25].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Properties of Carbon Fiber/Carbon Nanotube Wet-Laid Composites

Lee

Youk

et al. 2019

Polymers

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In this study, carbon nanotubes (CNTs) were introduced into carbon fiber (CF) wet-laid composites as functional nano-fillers to fabricate multi-functional composites with improved mechanical, electrical, and thermal properties. It was considered that the wet-laid process was most suitable in order to introduce filler into brittle and rigid carbon fiber substrates, and we established the conditions of the process that could impart dispersibility and bonding between the fibers. We introduced polyamide 6 (PA6) short fiber, which is the same polymeric material as the stacking film, into carbon fiber and CNT mixture to enhance the binding interactions between carbon fiber and CNTs. Various types of CNT-reinforced carbon fiber wet-laid composites with PA6 short fibers were prepared, and the morphology, mechanical and electrical properties of the composites were estimated. As CNT was added to the carbon fiber nonwoven, the electrical conductivity increased by 500% but the tensile strength decreased slightly. By introducing short fibers of the same material as the matrix between CNT–CF wet-laid nonwovens, it was possible to find optimum conditions to increase the electrical conductivity while maintaining mechanical properties.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation and Properties of Carbon Fiber/Carbon Nanotube Wet-Laid Composites

Lee

Youk

et al. 2019

Polymers

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“…Eskizeybek et al [17] experimented the chemical grafting of acid-modified CNTs onto silane functionalized glass fabric to enhance the interfacial properties of multiscale glass fiber/ epoxy composites. Lee et al [18] experimented an alternative route for CNT grafting on carbon fiber and noticed an improvement of 22% in tensile strength of carbon fiber composites grafted with MWCNTs as compared to the corresponding pristine composites. Glass and carbon fiber-reinforced hybrid composites have been researched in a variety of perspectives to reach their maximum potential.…”

Section: Introductionmentioning

confidence: 99%

Effect of MWCNTs addition, on the mechanical behaviour of FRP composites, by reinforcement grafting and matrix modification

Shahbaz

Berkalp

2019

Journal of Industrial Textiles

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Carbon nanotubes have extraordinary potential for the modification of reinforcements and matrices in fiber-reinforced polymer composites for enhanced mechanical properties. In this study, 12 fiber-reinforced polymer composites were produced with and without the addition of functionalized multi-wall carbon nanotubes using different stacking sequences of E-glass and carbon fabric reinforcements in simple and hybrid configurations. Carbon nanotubes were incorporated into the fiber-reinforced polymer components prior to composite fabrication by: (i) grafting on reinforcements, and (ii) matrix modification by carbon nanotubes. The grafting of carbon nanotubes exhibited a pronounced tensile behaviour with carbon-rich fiber-reinforced polymers, whereas carbon nanotube-modified matrix showed more enhanced flexural behaviour overall. Around 12% increase in tensile strength was observed when the carbon nanotubes were grafted on to the reinforcements compared to respective pristine composites, while around 70% increase in the flexural strength was noticed as compared to the respective pristine composties when carbon nanotube-modified matrix was used.

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