Fabrication of hollow SiC ultrafine fibers by single-nozzle electrospinning for high-temperature thermal insulation application

Tian, Qiong; Wu, Nan; Wang, Bing; Wang, Kunjie

doi:10.1016/j.matlet.2018.12.077

Cited by 36 publications

(16 citation statements)

References 12 publications

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“…(e) Schematic diagram illustrated the formation mechanism of hollow fibers with multi‐channels . (f) Schematic diagram showed the fabrication procedure of HSiC fibers …”

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 85%

“…Hollow fibers have attracted growing awareness of researchers due to their numerous applications, including sensors, catalysts carriers, gas storage, wave absorption materials, energy harvesting, thermal insulation composite materials, drug release, environmental protection, and nanofluidics . Hollow fibers can be generated from various polymers such as polyvinylpyrrolidone (PVP), PVDF, PAN, PVA, poly(e‐caprolactone), polyethersulfone, PVC, polyethersulfone, polyetherimide, polyimides, and polysulphone …”

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

“…Wu et al . fabricated ultrafine hollow silicon carbide fibers (HSiC) with the well‐distributed inner structure using single nozzle electrospinning to form core‐shell PS/polycarbosilane fibers first followed by pre‐oxidation and pyrolysis (Figure f).…”

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

“…Belt‐like fibers could be used in filtration media and separators in batteries and supercapacitors . Hollow fibers have been used in the high‐temperature thermal insulation applications, biomedical applications, and energy harvesting applications, and so on.…”

Section: Introductionmentioning

confidence: 99%

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A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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Engineering the secondary surface morphology of fibers (fibers without smooth surface and solid interior) has been attracting significant awareness in various areas and applications. Among different methods of forming nanofibers, electrospinning is the most widely adopted technique due to the ease of forming fibers with a broad range of properties and its unique advantages such as the flexibility to spin into a variety of shapes and sizes as well as adjustable porosity of electrospun structures. In this review paper, more emphasis is put on the secondary surface morphology. A comprehensive overview of the basic principles about the electrospinning process, types of electrospinning, materials, formation mechanisms, characterizations, and applications of electrospun fibers with the secondary surface morphology (e. g. the porous structure, grooved structure, wrinkled structure, rough structure, cactus structure, and hollow structure) are discussed in detail. Importantly, we believe our work can serve as guidelines for the preparations, characterizations, and applications of electrospun fibers with the secondary surface morphology.

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“…(e) Schematic diagram illustrated the formation mechanism of hollow fibers with multi‐channels . (f) Schematic diagram showed the fabrication procedure of HSiC fibers …”

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 85%

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

Section: Secondary Surface Morphologies Of Electrospun Nanofibersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

2020

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“…The liquid polycarbosilane precursors (L-PCS, whose molecular chain consists mainly of carbon and silicon atoms with the rest comprised of hydrogen atoms) were provided from the National University of Defense Technology (Changsha, China) and the number average molecular weight and weight average molecular weight of L-PCS were 1800 and 3500, respectively [24,25]. Both acetone solvent (99.6%) and Karstedt's Catalyst (which contributes to the curing process) were obtained from Shanghai Aladdin Chemical Reagent Co., LTD (Shanghai, China).…”

Section: Raw Materialsmentioning

confidence: 99%

Effect of Acetone Content on the Preparation Period and Curing/Pyrolysis Behavior of Liquid Polycarbosilane

Liu

2020

Applied Sciences

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A novel approach was proposed to increase the compactness, shorten the preparation period, and reduce the preparation cost by introducing acetone to optimize the polycarbosilane impregnation process. The porosity in internally derived SiC ceramics decreased and pore size was limited by using this new method, which led to higher compactness. Meanwhile, with the increase in acetone content, the viscosities of polycarbosilane and the wetting angles of polycarbosilane/graphite decreased appreciably, and the viscosity was 6.0 mPa·s with 40 wt.% acetone added—a factor of about 30 lower than that of original polycarbosilane. The wetting angle between polycarbosilane and graphite significantly decreased by 40%, which resulted in an enhancement in the impregnation efficiency of liquid polycarbosilane and a much shorter preparation period. This work provides a convenient and efficient method that is assistant during the practical production process of carbon fiber reinforced ceramic matrix composites (CMCs).

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Elastic SiC Aerogel for Thermal Insulation: A Systematic Review

Zhang,

Yu,

Zhao

et al. 2024

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SiC aerogels with their lightweight nature and exceptional thermal insulation properties have emerged as the most ideal materials for thermal protection in hypersonic vehicles; However, conventional SiC aerogels are prone to brittleness and mechanical degradation when exposed to complex loads such as shock and mechanical vibration. Hence, preserving the structural integrity of aerogels under the combined influence of thermal and mechanical external forces is crucial not only for stabling their thermal insulation performance but also for determining their practicality in harsh environments. This review focuses on the optimization of design based on the structure‐performance of SiC aerogels, providing a comprehensive review of the inherent correlations among structural stability, mechanical properties, and insulation performance. First, the thermal transfer mechanism of aerogels from a microstructural perspective is studied, followed by the relationship between the building blocks of SiC aerogels (0D particles, 1D nanowires/nanofibers) and their compression performance (including compressive resilience, compressive strength, and fatigue resistance). Moreover, the strategy to improve the high‐temperature oxidation resistance and insulation performance of SiC aerogels is explored. Lastly, the challenges and future breakthrough directions for SiC aerogels are presented.

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Fabrication of hollow SiC ultrafine fibers by single-nozzle electrospinning for high-temperature thermal insulation application

Cited by 36 publications

References 12 publications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

A Review on the Secondary Surface Morphology of Electrospun Nanofibers: Formation Mechanisms, Characterizations, and Applications

Effect of Acetone Content on the Preparation Period and Curing/Pyrolysis Behavior of Liquid Polycarbosilane

Elastic SiC Aerogel for Thermal Insulation: A Systematic Review

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