Origin of mechanical modifications in poly (ether ether ketone)/carbon nanotube composite

Pavlenko, Ekaterina; Boyer, François; Puech, Pascal; Olivier, Philippe; Sapelkin, Andrei V.; King, Stephen M.; Heenan, Richard K.; Pons, François; Gauthier, Bénédicte; Cadaux, Pierre-Henri; Bacsa, Wolfgang

doi:10.1063/1.4883299

Cited by 6 publications

(4 citation statements)

References 28 publications

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“…PEEK/MWCNT nanocomposites have been extensively studied by many researchers so far 5,8,27–29 . To compare the effectiveness on mechanical property reinforcement of this work and other researchers' findings, the increase of Young's modulus with MWCNT loadings normalized by that of neat PEEK is summarized and visualized in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that the present work shows a much higher effectiveness on Young's modulus reinforcement. To achieve similar level of improvement, most other systems would need an incorporation of 3 wt% MWCNTs or even more in PEEK 5,8,27–29 . It has also been reported that the MWCNT dispersion state and interfacial bonding between PEEK and MWCNT can influence Young's modulus substantially 30,31 .…”

Section: Resultsmentioning

confidence: 99%

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Well‐dispersed poly(ether‐ether‐ketone)/multi‐walled carbon nanotube nanocomposites prepared via a simple solution mixing approach

Jiang

Chen

Zhu

et al. 2021

Polymer International

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Incorporation of reinforcing nanoparticles, like multi‐walled carbon nanotubes (MWCNTs), in a polymer matrix is an effective way to enhance mechanical properties and expand structural applications of engineering polymers such as poly(ether‐ether‐ketone) (PEEK). Good dispersion of MWCNTs is critical for achieving optimal properties. In this work, a simple solution mixing approach was utilized to prepare PEEK nanocomposites reinforced with MWCNTs. By direct mixing of PEEK/dichloroacetic acid solution and MWCNT/N‐methyl‐2‐pyrrolidone solution, PEEK nanocomposites with individually dispersed MWCNTs were prepared. A PEEK wrapping of MWCNT mechanism is proposed to explain why this simple solution mixing approach resulted in such a good dispersion. Thermal stability of PEEK is not affected but crystallization is impeded due to the confinement effect of well‐dispersed MWCNTs. Young's modulus is increased by ca 20% while coefficient of thermal expansion above the glass transition temperature is decreased by ca 30% with only 1.5 wt% MWCNT loading in PEEK, which is critical for a variety of high‐temperature applications. © 2021 Society of Industrial Chemistry.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Well‐dispersed poly(ether‐ether‐ketone)/multi‐walled carbon nanotube nanocomposites prepared via a simple solution mixing approach

Jiang

Chen

Zhu

et al. 2021

Polymer International

View full text Add to dashboard Cite

show abstract

“…Furthermore, the mixing can be even simpler by avoiding the solution processes. Deng, 85 Ogasawara, 86 Tsuda, 87 and Pavlenko et al 88 prepared the CNT/ PEEK masterbatches by directly using a twin-screw extruder at 380-400 C, with the CNT mass fraction up to 3-15 wt%. Unfortunately, as this method can not efficiently avoid the aggregation of CNTs, the composites are usually very brittle, e.g., the strain at break could decrease from $30% to $5% by such compounding with CNTs.…”

Section: Preparation Methodsmentioning

confidence: 99%

“…Unfortunately, as this method can not efficiently avoid the aggregation of CNTs, the composites are usually very brittle, e.g., the strain at break could decrease from $30% to $5% by such compounding with CNTs. 88 In another way to prepare CNT/PEEK nanocomposites, yet still not sufficiently developed, the CNTs are pre-assembled into a macroscopic scaffold, especially in a form of film or paper, and then compounded with PEEK via hot compressing. Song et al 89 first developed such method, where the CNT film was prepared directly by a floating chemical vapor deposition (CVD) technique.…”

Section: Preparation Methodsmentioning

confidence: 99%

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Zhang

2020

Journal of Composite Materials

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High-temperature engineering thermoplastics are gaining growing interests as they not only provide a lightweight solution but also affect the manufacturing processes and efficiencies. Polyetheretherketone (PEEK) is a semi-crystalline one to meet such requirement, and has been widely used as the matrix for fiber-reinforced plastics and nanocomposites. Owing to their superior physical properties, carbon nanotubes (CNTs) can be introduced into PEEK matrix in order to further improve the performances. This article reviews the state of the art of CNT/PEEK nanocomposites, by focussing on the preparation method and their mechanical, thermal, and electrical properties. The enhanced stiffness, thermal stability, and conductive properties provide PEEK and its family members richer opportunities toward high-performance applications.

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Tribological and mechanical properties of graphene nanoplatelet/PEEK composites

Puértolas

Castro

Morris

et al. 2019

Carbon

177

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Poly(ether ether ketone) (PEEK) is a relevant thermoplastic in industry and in the biomedical sector. In this work, the lubricant capability of graphene nanoplatelets (GNPs) is used for improving the PEEK wear properties. Nanocomposites were prepared by solvent-free meltblending and injection molding at various compositions between 1 and 10 wt. % of GNPs. The Raman G band shows a progressive increment proportional to the bulk GNP percentage. From calorimetric data, the polymer matrix structure is interpreted in terms of a 3-phase model, in which the crystalline phase fluctuates from 39 to 34% upon GNP addition. Thermal conductivity varies in accordance with the polymer crystallinity. Tensile and flexural tests show a progressive increase in the modulus, as well as a decrease in the fracture strength and the work of fracture. Most important, the composite surface undergoes a substantial improvement in hardness (60%), together with a decrease in the coefficient of friction (-38%) and a great reduction in the wear factor (-83%). Abrasion and fatigue wear mechanisms are predominant at the lowest and highest GNP concentrations respectively. In conclusion, GNPs are used without any chemical functionalization as the filler in PEEK-based materials, improving the surface hardness and the tribological properties.

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Origin of mechanical modifications in poly (ether ether ketone)/carbon nanotube composite

Cited by 6 publications

References 28 publications

Well‐dispersed poly(ether‐ether‐ketone)/multi‐walled carbon nanotube nanocomposites prepared via a simple solution mixing approach

Well‐dispersed poly(ether‐ether‐ketone)/multi‐walled carbon nanotube nanocomposites prepared via a simple solution mixing approach

Carbon nanotube/polyetheretherketone nanocomposites: mechanical, thermal, and electrical properties

Tribological and mechanical properties of graphene nanoplatelet/PEEK composites

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