Heredity and difference of multiple‐scale microstructures in PAN‐based carbon fibers and their precursor fibers

Yu, Meijie; Xu, Yong; Wang, Chengguo; Hu, Xiuying; Zhu, Bo; Qiao, Ke; Yuan, Hua

doi:10.1002/app.36486

Cited by 20 publications

(7 citation statements)

References 30 publications

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“…Since our discovery, the combination of PBIs with CNT has attracted increasing attention and a wide range of applications has been reported. Such studies are listed in Table 3 218, 219, 221–227…”

Section: Pbi‐wrapped Cnts In a Different Application Categorymentioning

confidence: 99%

Fuel Cell Electrocatalyst Using Polybenzimidazole‐Modified Carbon Nanotubes As Support Materials

2013

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Toward the next generation fuel cell systems, the development of a novel electrocatalyst for the polymer electrolyte fuel cell (PEFC) is crucial to overcome the drawbacks of the present electrocatalyst. As a conductive supporting material for the catalyst, carbon nanotubes (CNTs) have emerged as a promising candidate, and many attempts have been carried out to introduce CNT, in place of carbon black. On the other hand, as a polymer electrolyte, polybenzimidazoles (PBIs) have been recognized as a powerful candidate due to the high proton conductivity above 100 °C under non-humid conditions. In 2008, we found that these two materials have a strong physical interaction and form a stable hybrid material, in which the PBIs uniformly wrap the surfaces of the CNTs. Furthermore, PBIs serve as effective binding sites for the formation of platinum (Pt) nanoparticles to fabricate a ternary composite (CNT/PBIs/Pt). In this review article, we summarize the fundamental properties of the CNT/PBIs/Pt and discuss their potential as a new electrocatalyst for the PEFC in comparison with the conventional ones. Furthermore, potential applications of CNT/PBIs including use of the materials for oxygen reduction catalysts and reinforcement of PBI films are summarized.

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Section: Pbi‐wrapped Cnts In a Different Application Categorymentioning

confidence: 99%

Fuel Cell Electrocatalyst Using Polybenzimidazole‐Modified Carbon Nanotubes As Support Materials

2013

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“…properties of CFs strongly depend on the manufacturing process and starting precursor material [17]. Moreover, production of high property CFs from the precursors has been categorized as thermal stabilization, carbonization, polymerization of the precursors, graphitization, spinning of fibers, etc.…”

Section: Carbon Fiber (Cf)mentioning

confidence: 99%

Review on Carbon Black and Graphite Derivatives-based Natural Rubber Composites

Don

Fernando²,

Edirisinghe³

2021

AIT

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Functional materials based on the crystalline allotropes of carbon have garnered tremendous interest from researchers in chemistry, physics, and material science for a long time. This paper reviews studies carried out on carbon black and graphite derivatives, their properties, and manufacturing applications. Graphite derivatives such as graphene, graphene oxide, reduced graphene oxide, expanded graphite, and graphene quantum dots are reviewed, along with a discussion of their synthesis and advantages. Generally, carbon black and graphite derivatives are incorporated into the polymeric material to enhance the performance of the end material. Recently, much attention has turned to the structural and electronic properties of carbon-based polymeric materials. Hence, at present, graphite-based polymeric material is the hottest topic in physics and materials science due to excellent electric and thermal conductivity, optical, mechanical properties, etc. The most common and widely used filler for rubber in the industry is carbon black due to its excellent physico-mechanical properties, thermal stability, oil resistance, etc. Therefore, carbon black and graphite derivatives incorporated composites of natural rubber have been reviewed in detail, along with a discussion of the current limitations and challenges of these exciting materials.

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“…3a that longitudinal ridges and striations running along the length of fibers were found on the surfaces of untreated HSHM-CF. The characteristic grooves resulted from the wet spinning process of PAN-precursors due to skin forming and diffusion of solvents out from the core [51]. In addition, the abundance of granules observed on untreated HSHM-CF surface and cross-section were possibly attributed to the pyrolytic by-products or impurities absorbed in the manufacturing process [39,52].…”

Section: Surface Morphological Analysismentioning

confidence: 99%

Enhanced Interfacial Properties of High-Modulus Carbon Fiber Reinforced PEKK Composites by a Two-Step Surface Treatment: Electrochemical Oxidation Followed by Thermoplastic Sizing

Zhang

Qian

et al. 2021

Appl Compos Mater

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A two-step surface treatment was conducted on high strength and high modulus carbon fibers (HSHM-CFs) to enhance the interfacial properties of polyetherketoneketone (PEKK) matrix composites. In the two-step surface treatment, the surfaces of HSHM-CFs were electrochemically oxidized followed by sizing treatment. Thermoset epoxy (EP) sizing agents and thermoplastic polyetherimide (PEI) sizing agents were utilized for comparison. Results showed that PEI sizing agents had better wetting effects than EP sizing agents. The sizing process led to increases in fiber strength due to healed surface flaws and inhibited micro-crack initiation. Although EP sizing agents were incompatible with PEKK matrix, the interlaminar shear strength (ILSS) of PEKK matrix composites reinforced by EP-sized fibers still increased, compared with that by untreated fibers, due to hydrogen bond and weak chemical reactions between HSHM-CFs and PEKK matrix. The strong interaction between PEI sizing agents and HSHM-CFs, diffusion and entanglement as well as the noncovalent π-π interaction between PEI sizing agents and PEKK matrix resulted in highest ILSS value of PEI-sized HSHM-CF/PEKK composites.

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Heredity and difference of multiple‐scale microstructures in PAN‐based carbon fibers and their precursor fibers

Cited by 20 publications

References 30 publications

Fuel Cell Electrocatalyst Using Polybenzimidazole‐Modified Carbon Nanotubes As Support Materials

Fuel Cell Electrocatalyst Using Polybenzimidazole‐Modified Carbon Nanotubes As Support Materials

Review on Carbon Black and Graphite Derivatives-based Natural Rubber Composites

Enhanced Interfacial Properties of High-Modulus Carbon Fiber Reinforced PEKK Composites by a Two-Step Surface Treatment: Electrochemical Oxidation Followed by Thermoplastic Sizing

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