Optimization of stabilization and carbonization treatment of PAN fibres and structural characterization of the resulting carbon fibres

Fitzer, E.; Frohs, Wilhelm; Heine, M.

doi:10.1016/0008-6223(86)90257-5

Cited by 408 publications

(288 citation statements)

References 4 publications

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“…Also, a second exothermic peak can be seen at 307°C. This small hump probably resulted from undesirable oxidation reactions [17] or additional intermolecular cross-linking reactions [18,19].…”

Section: Resultsmentioning

confidence: 99%

Stabilization of commercial polyacrylonitrile fibres for fabrication of low-cost medium-strength carbon fibres

2006

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Abstract:The process of fabrication of carbon fibres from polyacrylonitrile (PAN) fibres is composed of two steps including oxidative stabilization at low temperature and carbonization at high temperature in an inert atmosphere. Due to the high price of the raw material (special PAN fibres), carbon fibres are still expensive. It is shown that it is possible to produce desirable carbon fibres from (cheaper) commercial PAN fibres. In order to achieve this, it is necessary to make some changes in the conventional stabilization procedure to reach complete stabilization.

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Section: Resultsmentioning

confidence: 99%

Stabilization of commercial polyacrylonitrile fibres for fabrication of low-cost medium-strength carbon fibres

2006

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“…It must be pointed out that, the thermal treatment of the PAN fibres has been extensively studied due to the final mechanical features of the obtained CF are hardly dependent of the conditions in which it is realized. Therefore, and taking into account that it is not the main goal of this work and the existence of a wide literature about it (Fitzer et al 1986, Rahaman et al 2007, Yusofa et al 2012), a strict analysis of the results presented in Figures 1 and 2 will not be realized. In summary, PANOX fibres carbonization produces an important loss of mass, higher than 50 % (Figure 1), which takes place mainly through the volatile release, above all as oxygen-containing compounds (CO, CO2, H2O) and nitrogen-containing compounds (NH3, HCN, CH3CN) (Figure 2), which leads to a carbon enrichment of the final CF.…”

Section: Carbonization Of Panox Fibresmentioning

confidence: 99%

“…This behaviour is owed to the existence of restrictions, which hinder the N2 diffusion in the microporosity bulk (Fitzer et al 1986, Rahaman et al 2007). This behaviour has been observed in other PCF and for carbonized (Cazorla-Amorós et al 1996, Rahaman et al 2007Rhyu et al 1990).…”

Section: Acf Pan Porous Texture Characterizationmentioning

confidence: 99%

Unusual pre-oxidized polyacrylonitrile fibres behaviour against their activation with CO2: carbonization effect

2016

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Abstract.The CF-PAN activation process with CO2 has been analysed. Activation of CF-PAN with CO2 leads to unusual results both, activation percentage evolution over the time and generated porosity development. In the explanation has been highlighted the role of the carbonization step in the CF-PAN activation process. The analysed results point to the fact that part of the released nitrogen-containing compounds during PANOX fibres carbonization are deposited on the CF surface, which affects to carbonized PAN fibres, decreasing actives sites, or acting as inhibitors of the gasification reaction.* Corresponding

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“…PAN molecules are cyclized to transform into a non-meltable ladder structure, which is critical to avoid melting during carbonization [4]. It is known that nitrile groups in homo PAN are initiated thermally through a free radical mechanism, leading to cyclized network of hexagonal carbon-nitrogen rings [5].…”

Section: Introductionmentioning

confidence: 99%

“…Stabilization is one of the most important factors to determine mechanical strength of PAN based CFs. Fitzer et al [4] reported optimization of stabilization for PAN fibers and effect of carbonization of resulting stabilized fibers on tensile strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Condition on Tensile Properties of Carbon Fiber

Lee¹,

Kim²,

Ku³

et al. 2011

Carbon letters

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For polyacrylonitrile (PAN) based carbon fiber (CF) process, we developed a lab scale wet spinning line and a continuous tailor-made stabilization system with ten columns for controlling temperature profile. PAN precursor was spun with a different spinning rate. PAN spun fibers were stabilized with a total duration of 45 to 110 min at a given temperature profile. Furthermore, a stabilization temperature profile was varied with the last column temperature from 230 to 275 o C. Stabilized fibers were carbonized in nitrogen atmosphere at 1200 o C in a furnace. Morphologies of spun and CFs were observed using optical and scanning electron microscopy, respectively. Tensile properties of resulting CFs were measured. The results revealed that process conditions such as spinning rate, stabilization time, and temperature profile affect microstructure and tensile properties of CFs significantly.

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Optimization of stabilization and carbonization treatment of PAN fibres and structural characterization of the resulting carbon fibres

Cited by 408 publications

References 4 publications

Stabilization of commercial polyacrylonitrile fibres for fabrication of low-cost medium-strength carbon fibres

Stabilization of commercial polyacrylonitrile fibres for fabrication of low-cost medium-strength carbon fibres

Unusual pre-oxidized polyacrylonitrile fibres behaviour against their activation with CO2: carbonization effect

Effect of Process Condition on Tensile Properties of Carbon Fiber

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