Two-step method to realize continuous multi-wall carbon nanotube grafted on the fibers to improve the interface of carbon fibers/epoxy resin composites based on the Diels-Alder reaction

Li, Cheng‐Sen; Dong, Yuqing; Yuan, Xiaomin; Qiu, Zhijie; Zhang, Ye; Yan, Shuhan; Gao, Xueping; Zhu, Bo

doi:10.1016/j.carbon.2023.118131

Cited by 24 publications

(2 citation statements)

References 49 publications

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“…In contrast, the prepared carboxylated MWCNTs were dispersed in a reticular pattern on the graphite surface, as Figure 6 A,B shows, facilitating electron transport and filling the gap [ 45 ] between the particles. More importantly, the carboxyl groups on the surface improved the interfacial compatibility between the PES and EG [ 46 , 47 , 48 ], so that agglomeration occurs at higher MWCNT contents, as Figure 6 H shows, and the improvement of electrical conductivity was also more obvious. Overall, for CM-BPs, the conductivity improved to 243.52 ± 2.88 S/cm at 2.4%, which is 2.79% lower than 250.53 ± 3.05 S/cm for PM-BPs at 1.6% and 11.18% higher than 217.69 S/cm for N-BPs.…”

Section: Resultsmentioning

confidence: 99%

Structure and Properties of Carboxylated Carbon Nanotubes@Expanded Graphite/Polyethersulfone Composite Bipolar Plates for PEM

Zhao

Pan

et al. 2023

Nanomaterials

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Composite bipolar plates (BPs) hinder their application in proton exchange membrane fuel cells (PEMFC) because of their poor conductivity and mechanical properties. Nanofillers can effectively solve this problem but often have a limited effect due to their easy agglomeration. In this work, a continuous mesh carboxylated multi-walled carbon nanotube (MWCNT) coating on the surface of graphite was synthesized by chemical vapor deposition (CVD) and carboxylation modification, and the composite BPs were prepared by molding using prepared reticulated carboxylated MWCNTs, expanded graphite, and resin. By optimizing the carboxylation treatment time and the content of the nano-filler, the composite BPs had the best performance at a 15 min carboxylation treatment time and 2.4% filler content. The planar conductivity reached up to 243.52 S/cm, while the flexural strength increased to 61.9 MPa. The thermal conductivity and hydrophobicity were improved compared with the conventional graphite/resin composite BPs, and good corrosion resistance has been demonstrated under the PEMFC operating environment. This work provides a novel nanofiller modification paradigm for PBs.

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Section: Resultsmentioning

confidence: 99%

Structure and Properties of Carboxylated Carbon Nanotubes@Expanded Graphite/Polyethersulfone Composite Bipolar Plates for PEM

Zhao

Pan

et al. 2023

Nanomaterials

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“…The concept of nanocomposites has revolutionized materials science and engineering, offering unprecedented opportunities to tailor material properties for specific applications. In the context of epoxy resins, nanocomposites typically involve the dispersion of various nanoadditives, such as nanoparticles (NPs), 3,4 nanotubes, 7,13 nanoclays, 14,15 and nanofibers, 16,17 within the epoxy matrix. These nanoadditives possess unique characteristics at the nanoscale, including high surface area‐to‐volume ratios, quantum size effects, and exceptional mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Enhancing anticorrosive performance of epoxy‐based ZnO nanocomposite coatings via 3‐(trimethoxysilyl)propyl methacrylate modification

Dam,

Dao,

Nguyen

et al. 2024

J of Applied Polymer Sci

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The influence of 3‐(trimethoxysilyl)propyl methacrylate (TMSPM) on the properties of epoxy‐based ZnO nanocomposite coatings was investigated, considering its impact on both modified ZnO nanoparticles (NPs) and epoxy resin matrix. FTIR analysis revealed that TMSPM‐modified epoxy resin (mEP) exhibited lower hydroxyl group and epoxy group content compared to the initial epoxy resin (EP). Furthermore, the obtained results demonstrated that epoxy‐based coatings incorporating modified ZnO NPs (m‐ZnO NPs) displayed superior mechanical properties compared to those of the sample filled with the unmodified ZnO NPs (u‐ZnO NPs). However, the mechanical properties of epoxy‐based coatings loaded with m‐ZnO NPs were found to be lower than those of coatings comprising mEP resin and m‐ZnO NPs. The arrangement of anticorrosion performance of coatings followed a similar pattern. SEM analysis of the cross‐cut surface revealed better dispersion of m‐ZnO NPs compared to the u‐ZnO NPs, although small gaps were observed among the m‐ZnO NPs and the epoxy matrix. The SEM images of coatings based on mEP and m‐ZnO NPs indicated a tighter structure. This structural characteristic is considered the main reason for the highest anticorrosion performance observed in the investigated coatings incorporating both mEP and m‐ZnO NPs.

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Aminated carbon nanotube enhanced composite T‐joints mediating CFRP load‐bearing capacity improvement

Bai,

Yan,

et al. 2023

Polymer Composites

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Adhesive bond is the weakest part of carbon fiber reinforced composites (CFRP) force‐bearing structure. Therefore, enhancing the strength of the adhesive bond is key to improve force‐bearing structure. In this study, adhesive strength of the common CFRP T‐joint was enhanced by aminated carbon nanotubes (CNT). To begin with, shear tensile strength of single‐lap‐joint laminated composites with various CNT content was verified, which peaked at 0.5 wt%. It was indicated that the adhesive bond of deltoid is the weakest area in a T‐joint. CNT was applied in the deltoid of composite T‐joint and pull‐off test was conducted to investigate the progress from the initiation and evolution of damage as well as the final failure. The aminated CNT employed in this study formed an effective load transmission through physical engagement and chemical bonding; the addition of 0.5 wt% CNT effectively enhanced tensile strength and toughness, improving mechanical property of the adhesive bond. This study provides a solution to enhance the adhesive area of CFRP load‐bearing structure with CNT, consequently improve the load‐bearing strength of composite.Highlights Aminated CNT is substantially improve the adhesive strength of CFRP T‐joint. Tensile strength and toughness of T‐joint deltoid was optimized by 0.5 wt% CNT. Effective load transmission through physical engagement and chemical bonding.

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Two-step method to realize continuous multi-wall carbon nanotube grafted on the fibers to improve the interface of carbon fibers/epoxy resin composites based on the Diels-Alder reaction

Cited by 24 publications

References 49 publications

Structure and Properties of Carboxylated Carbon Nanotubes@Expanded Graphite/Polyethersulfone Composite Bipolar Plates for PEM

Structure and Properties of Carboxylated Carbon Nanotubes@Expanded Graphite/Polyethersulfone Composite Bipolar Plates for PEM

Enhancing anticorrosive performance of epoxy‐based ZnO nanocomposite coatings via 3‐(trimethoxysilyl)propyl methacrylate modification

Aminated carbon nanotube enhanced composite T‐joints mediating CFRP load‐bearing capacity improvement

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