Excellent interfacial structural integrity of pre-oxidized carbon fiber-reinforced carbon-carbon composites

Li, Xiang; Yang, Zefeng; Li, Jie; Wei, Wenfu; Yin, Guofeng; Gao, Guoqiang; Tu, Chuanjun; Wu, Guangning

doi:10.1080/09276440.2021.1943141

Cited by 9 publications

(5 citation statements)

References 36 publications

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“…Li et al [133] used pre-oxidized CF as the reinforcing phase of CF-C/Cs composites. Due to the abundant oxygencontaining functional groups on the surface of the pre-oxidized CF and the adaptive expansion when carbonized with pitch, the pre-oxidized CF reinforced C/Cs obtains an excellent fiber/matrix interfacial structure.…”

Section: Fiber Reinforced Composite Slide Platementioning

confidence: 99%

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Pantograph–catenary electrical contact system of high-speed railways: recent progress, challenges, and outlooks

Dong

et al. 2022

Rail. Eng. Science

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As the unique power entrance, the pantograph–catenary electrical contact system maintains the efficiency and reliability of power transmission for the high-speed train. Along with the fast development of high-speed railways all over the world, some commercialized lines are built for covering the remote places under harsh environment, especially in China; these environmental elements including wind, sand, rain, thunder, ice and snow need to be considered during the design of the pantograph–catenary system. The pantograph–catenary system includes the pantograph, the contact wire and the interface—pantograph slide. As the key component, this pantograph slide plays a critical role in reliable power transmission under dynamic condition. The fundamental material characteristics of the pantograph slide and contact wire such as electrical conductivity, impact resistance, wear resistance, etc., directly determine the sliding electrical contact performance of the pantograph–catenary system; meanwhile, different detection methods of the pantograph–catenary system are crucial for the reliability of service and maintenance. In addition, the challenges brought from extreme operational conditions are discussed, taking the Sichuan–Tibet Railway currently under construction as a special example with the high-altitude climate. The outlook for developing the ultra-high-speed train equipped with the novel pantograph–catenary system which can address the harsher operational environment is also involved. This paper has provided a comprehensive review of the high-speed railway pantograph–catenary systems, including its progress, challenges, outlooks in the history and future.

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Section: Fiber Reinforced Composite Slide Platementioning

confidence: 99%

“…Fig. 24 a Interfacial bonding mechanism of C/Cs and OPF-C/Cs; b-d mechanical properties of pure-C/Cs, CF-C/Cs, and OPF-C/Cs (b compressive strength, c flexural strength, and d impact strength); e cross-sectional SEM images of CF-C/Cs; and f OPF-C/Cs[133] …”

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confidence: 99%

Pantograph–catenary electrical contact system of high-speed railways: recent progress, challenges, and outlooks

Dong

et al. 2022

Rail. Eng. Science

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“…Therefore, exploring thermal interface materials (TIMs) with high thermal conductivity has become crucial. − Ideal TIM materials require good mechanical properties to match the inherent surface roughness and maintain good contact of heater and heat sink during thermal cycling along with excellent heat transfer performance. − Polymer-based materials are widely used in TIMs due to their excellent mechanical properties and processability. However, their thermal conductivity is low and unstable at high temperatures, which has led to the development of alternative methods to enhance the performance of the high polymer matrix-based TIMs by adding high thermal conductivity materials, such as metal (Al, Ag, and Cu), ceramic (Al 2 O 3 , BN, and SiC , ), and carbon-based fillers (diamond, carbon fiber, − and graphene − ).…”

Section: Introductionmentioning

confidence: 99%

Sandwich-Structured Thermal Interface Materials with High Thermal Conductivity

Xu,

Zhang,

Wang

et al. 2024

ACS Appl. Eng. Mater.

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As modern electronics advance toward miniaturization and integration, there is an increased demand for effective thermal management solutions. One of the most promising strategies to achieve this is to enhance the thermal transport capacity of thermal interface materials (TIMs) by incorporating fillers. In this study, carbon fiber was used as the framework, and a simple shear stress-oriented approach was employed to orient graphene flatly onto the carbon fiber surface, yielding high thermal conductivity ordered carbon fiber and graphene (OCF/G) films. A sandwich-structured thermal interface material was fabricated by vertically embedding laser-processed optical fibers (OCF/G) into a silicone gel matrix. The vertically arranged OCF/G films, as the heat transfer path, retained their high thermal conductivity, while the interconnected silicone gel network offered superior mechanical properties. The through-plane thermal conductivity of the composites is 37.26 W m–1 K–1, which is 226 times higher than pure PDMS and 68 times higher than the composite with only carbon fibers loading. Additionally, thermal management applications of the composites as thermal interface materials for electronic device cooling are demonstrated. This construction method provides an effective approach for designing thermal interface materials with enhanced thermal and mechanical performance.

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“…Carbon fiber (CF) is widely used as an ideal reinforcement material in the aerospace, construction, sports, and automotive industries due to its excellent tensile strength, low density, high-temperature resistance, good fatigue resistance, and friction resistance. − The mechanical properties of CF composites are related to many factors, such as the number of fibers, the orientation of the fibers, and the forming process, especially the interfacial bond between the fibers and the matrix. , However, the surface of CF is smooth and chemically inert, resulting in poor compatibility with the matrix and insufficient interfacial bonding strength, which limits the effect of CF as a reinforcement material . It is necessary to modify CF to improve its bond strength with the matrix.…”

Section: Introductionmentioning

confidence: 99%

Improving the Tribological Performance of Phosphate-Bonded Coatings Reinforced by Carbon Fiber/Graphene Oxide

Zheng

Bian

et al. 2023

ACS Appl. Nano Mater.

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To enhance the interfacial bond strength of carbon fiber (CF), graphene oxide (GO) was grafted onto the CF surface byγ-aminopropyl triethoxysilane, and CF modified with GO (CF-GO) was added into the phosphate-bonded coating as a reinforcement to improve the tribological properties of the coating. In addition, the evolution of the physiochemical structure of CF before and after the modification was investigated by Fourier transform infrared spectroscopy, X-ray diffraction analysis, X-ray photoelectron spectroscopy, and scanning electron microscopy. The results show that GO and CF are chemically bonded together, and the CF surface becomes rough due to the presence of GO, enhancing mechanical engagement to improve the interfacial bond between CF-GO and the coating matrix, which is improved by the CF pull-out test. Tribological tests were conducted to investigate the wear behavior of the coating. The friction coefficient of the coating decreases with the increase of CF-GO. Besides, the wear rate of the coating shows similar trends with the addition of CF-GO. The addition of 15 wt % CF-GO has reduced the coefficient of friction and wear rate of the coating by approximately 18 and 40%, respectively, when compared to those of the coating without GO-CF. The related mechanisms are also clarified.

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Excellent interfacial structural integrity of pre-oxidized carbon fiber-reinforced carbon-carbon composites

Cited by 9 publications

References 36 publications

Pantograph–catenary electrical contact system of high-speed railways: recent progress, challenges, and outlooks

Pantograph–catenary electrical contact system of high-speed railways: recent progress, challenges, and outlooks

Sandwich-Structured Thermal Interface Materials with High Thermal Conductivity

Improving the Tribological Performance of Phosphate-Bonded Coatings Reinforced by Carbon Fiber/Graphene Oxide

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