High strength and high modulus carbon fibers

Chae, Han Gi; Newcomb, Bradley A.; Gulgunje, Prabhakar; Liu, Yaodong; Gupta, Kishor; Kamath, Manjeshwar G.; Lyons, Kent; Ghoshal, Sushanta; Pramanik, Chandrani; Giannuzzi, Lucille A.; Şahin, Korhan; Chasiotis, Ioannis; Kumar, Satish

doi:10.1016/j.carbon.2015.05.016

Cited by 191 publications

(141 citation statements)

References 20 publications

(16 reference statements)

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“…This should not only include a downsizing of carbon fibres down to less than 1 µm, but also a property improvement of carbon fibres with diameter sizes of several micrometres , Figure . Tensile strengths of 9 GPa at a gauge length of 1 mm have been recently reported . This shows that by developing carbon fibres with homogeneous structure, small void sizes, homogeneous and narrow void distributions, tensile strengths up to approx.…”

Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 86%

“…Another approach is to reduce the fibre diameter which leads to statistically less voids of critical flaw size , Figure . Void sizes in the range of 20–30 nm result in tensile strengths about 6 GPa .…”

Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 99%

“…This shows that by developing carbon fibres with homogeneous structure, small void sizes, homogeneous and narrow void distributions, tensile strengths up to approx. 16 GPa or 20.9 GPa (for 100 µm and 1 nm gauge length, respectively) could be reached by the improvement of already existing manufacturing procedures . These improvements include purification of raw materials and stabilisation of thermal decompositions preventing bubble developments within the fibre core.…”

Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 99%

See 2 more Smart Citations

Influence of processing parameters on the properties of carbon fibres – an overview

Jäger

Cherif

Kirsten

et al. 2016

Materialwissenschaft Werkst

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Several studies have shown the importance of carbon fibres (CF) for different high technology markets. In recent years, different fibre types with improved properties have been developed for those markets. Polyacrylonitrile (PAN) copolymers are the basic raw material (precursor) for these fibres in the predominant case. Improvements of the mechanical fibre properties have mainly been achieved by defect reduction during the manufacturing process. Thus, commercial carbon fibres with tensile strengths up to approx. 7000 MPa are currently available. It can be shown that the strengths can be further increased (in the direction of graphene properties) when the relationship between process conditions and defects due to manufacturing of the fibres is better understood. In this context, novel processes like electron beam crosslinking or UV‐activation have proven to be very promising. The article gives an overview about the current situation in the field of carbon fibres development and particularly shows recent shortcomings with respect to novel applications.

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Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 86%

Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 99%

Section: Structure‐property‐relations Of Carbon Fibresmentioning

confidence: 99%

See 1 more Smart Citation

Influence of processing parameters on the properties of carbon fibres – an overview

Jäger

Cherif

Kirsten

et al. 2016

Materialwissenschaft Werkst

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“…Carbon fiber (CF) has attracted great interest in both research and industrial fields because of its excellent mechanical properties, especially its tensile strength12. Currently, carbon fibers provide reinforcement in composites with suitable resins3, which are applied as structural materials in aircraft, spacecraft, sports equipment, etc456.…”

mentioning

confidence: 99%

Comprehensive stabilization mechanism of electron-beam irradiated polyacrylonitrile fibers to shorten the conventional thermal treatment

Park

Yoo

Kang

et al. 2016

Sci Rep

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An electron beam was irradiated on polyacrylonitrile (PAN) fibers prior to thermal stabilization. The electron-beam irradiation effectively shortened the thermal stabilization process by one fourth compared with the conventional thermal stabilization process. A comprehensive mechanistic study was conducted regarding this shortening of the thermal stabilization by electron-beam irradiation. Various species of chain radicals were produced in PAN fibers by electron-beam irradiation and existed for a relatively long duration, as observed by electron spin resonance spectroscopy. Subsequently, these radicals were gradually oxidized to peroxy radicals in the presence of oxygen under storage or heating. We found that these peroxy radicals (CO) enabled such an effective shortcut of thermal stabilization by acting as intermolecular cross-linking and partial aromatization points in the low temperature range (100–130 °C) and as earlier initiation seeds of successive cyclization reactions in the next temperature range (>130–140 °C) of thermal stabilization. Finally, even at a low irradiation dose (200 kGy), followed by a short heat treatment (230 °C for 30 min), the PAN fibers were sufficiently stabilized to produce carbon fibers with tensile strength and modulus of 2.3 and 216 GPa, respectively, after carbonization.

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“…Over the past two decades, many polymers, such as PE and lignin, have been evaluated as low-cost CF precursor materials. A significant amount of work has been done on engineering new precursors and processing technologies, relating fiber structure to properties, and translating the relationship into production for either reducing production cost [2,5,6] or increasing fiber properties [7][8][9]. Potentially low-cost CF has been produced from solvated MP pitch using a highly efficient meltblowing process [10].…”

Section: Introductionmentioning

confidence: 99%

Meltblown Solvated Mesophase Pitch-Based Carbon Fibers: Fiber Evolution and Characteristics

Yue

Liu

Vakili

2017

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Potentially low-cost continuous carbon fibers are produced from solvated mesophase pitch through a patented meltblowing process. The structural evolution and properties of the fibers are characterized by various analytical methods. The meltblown fibers are continuous fibers which are collected into a fibrous web form, and the diameter of the filaments is attenuated by the flow rate of air streams. The spun fibers can be rapidly stabilized in air due to the high melting mesogens and the removable solvent. The carbonized fibers show a high carbon yield of 75 wt % (or 86 wt % if the solvents are neglected) and a mean diameter of 8-22 µm with typical fiber diameter distribution and variation. The evolution of the fiber structure depends not only on the processing temperature but also on the fiber diameter. The processed carbon fibers retain the same form as the spun fibers and have a low packing density and reasonable mechanical properties.

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High strength and high modulus carbon fibers

Cited by 191 publications

References 20 publications

Influence of processing parameters on the properties of carbon fibres – an overview

Influence of processing parameters on the properties of carbon fibres – an overview

Comprehensive stabilization mechanism of electron-beam irradiated polyacrylonitrile fibers to shorten the conventional thermal treatment

Meltblown Solvated Mesophase Pitch-Based Carbon Fibers: Fiber Evolution and Characteristics

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