Factors limiting the tensile strength of PBO-based carbon fibers

Newell, James A.; Edie, D.D.

doi:10.1016/0008-6223(95)00216-2

Cited by 30 publications

(17 citation statements)

References 6 publications

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“…The carbonized fiber (heat‐treated up to 1200 °C) showed a carbon yield of 75%, a tensile strength of 2.5 GPa and a modulus of 139 GPa 69. Polybenzoxazole (PBO) was investigated by Newell and Edie70 PBO can be carbonized through a regular process into carbon fibers without stabilization. The resulting carbon fibers show moderate mechanical properties with a tensile strength of 1 GPa and moduli up to 245 GPa.…”

Section: Carbon Fibers Derived From Fully Synthetic Precursorsmentioning

confidence: 99%

Carbon Fibers: Precursors, Manufacturing, and Properties

Frank

Hermanutz

Buchmeiser

2012

Macro Materials & Eng

395

258

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The properties, structure, and processing of carbon fibers are reviewed. Carbon fibers are made from several precursors, with PAN being the dominating precursor in the market. Carbon fibers have high tensile strength, high modulus (up to the theoretical limit of around 1000 GPa), and low density, depending on the structure and processing in very limited combinations. Both the structure and composition of the precursor affect the properties of the resulting carbon fibers significantly. Although the essential processes for carbon fiber production are similar, different precursors require different processing conditions in order to achieve improved performance. Future developments are discussed.

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Section: Carbon Fibers Derived From Fully Synthetic Precursorsmentioning

confidence: 99%

Carbon Fibers: Precursors, Manufacturing, and Properties

Frank

Hermanutz

Buchmeiser

2012

Macro Materials & Eng

395

258

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“…Newell et al. legten dar, dass die verminderte Zugfestigkeit PBO‐basierter CF mit Defekten in der ursprünglichen PBO‐Faser zusammenhängt 199. Entsprechend verbessert jede Optimierung im Spinnprozess für PBO‐Fasern auch die Zugfestigkeit der resultierenden CF.…”

Section: Präkursor‐systemeunclassified

Carbonfasern: Präkursor‐Systeme, Verarbeitung, Struktur und Eigenschaften

et al. 2014

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Dieser Aufsatz gibt einen Überblick über Präkursorsysteme, deren Verarbeitung und die resultierenden Eigenschaften der Carbonfasern (CF) in Abhängigkeit des Präkursors und berücksichtigt dabei die neuesten Entwicklungen auf dem Gebiet der alternativen Präkursoren für die Herstellung von preisgünstigeren CF. Es werden folgende Präkursoren behandelt: Polyacrylnitril‐basierte Copolymere, Pech, Cellulose, Lignin, Polyethylen und neue synthetische Polymerpräkursoren für hochwertige CF. Außerdem werden Zusammenhänge zwischen Struktur und Eigenschaften aufgezeigt, und es werden verschiedene Modelle vorgestellt, die sowohl die Struktur als auch die Morphologie von CF beschreiben.

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“…Table 6 shows that the porosity values evaluated using equation (2) were found to vary between 25 and 27 %, respectively, as a function of heat-treatment temperature. It seems that with rising temperature, there is a tendency for the porosity values to decrease.…”

Section: Assessment Of Tensile Testing Measurementsmentioning

confidence: 99%

“…The porosity (%) = (2) where ρ is the carbon fiber density and d 002 is the interplanar d-spacing of the carbon fiber. ρ g is the density of graphite (2.26 g/cm 3 ) and d g is the dspacing of the (002) reflection of graphite (0.3354 nm).…”

Section: Evaluation Of Apparent Crystallite Sizementioning

confidence: 99%

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Formation of non-graphitizing carbon fibers prepared from poly(p-phenylene terephthalamide) precursor fibers

Karacan

Erzurumluoğlu

2015

Fibers Polym

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The effect of carbonization temperature on the structure and properties of poly(p-phenylene terephthalamide)-based carbon fibers from commercially available Twaron ® (PPTA) presursor is reported. Turbostratic PPTA-based carbon fibers were produced using a single step procedure in an inert atmosphere at temperatures ranging from 600 to 1100 o C. In the present study, fiber diameter, mass yield, density, elemental analysis, X-ray diffraction, Raman spectroscopy, tensile testing and electrical conductivity measurements were performed and evaluated to follow and monitor the properties and structural transformations of carbon fibers with rising temperature. The increase of heat-treatment temperature to 1100 o C decreased the interlayer d-spacing (d 0 0 2 ) and increased the in-plane size (L a ) and thickness (L c ) of the graphene layers. The intensity ratios of D to G bands in the Raman spectra increased with rising temperature, suggesting, in agreement with the X-ray diffraction measurements, that the in-plane size (L a ) of the graphene planes increased with temperature. The density, carbon content, C/H ratio, apparent crystallite size (L a and L c ), electrical conductivity and tensile properties of the resultant carbon fibers were enhanced with rising temperature. It has been shown that the gage length of the carbon fibers tested has a significant effect on the tensile strength obtained. After taking into account the effects of gage length and porosity dependence, the carbonization of PPTA precursor fibers prepared at 1100 o C gave a tensile strength of 191 MPa and a tensile modulus of 83 GPa, respectively.

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Factors limiting the tensile strength of PBO-based carbon fibers

Cited by 30 publications

References 6 publications

Carbon Fibers: Precursors, Manufacturing, and Properties

Carbon Fibers: Precursors, Manufacturing, and Properties

Carbonfasern: Präkursor‐Systeme, Verarbeitung, Struktur und Eigenschaften

Formation of non-graphitizing carbon fibers prepared from poly(p-phenylene terephthalamide) precursor fibers

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