Continuous stabilization of polyacrylonitrile (PAN) - carbon nanotube (CNT) fibers by Joule heating

Lu, Mingxuan; Xu, Jiawei; Arias‐Monje, Pedro J.; Gulgunje, Prabhakar; Gupta, Kishor; Shirolkar, Narayan; Maffe, Adam P.; DiLoreto, Edward; Ramachandran, Jyotsna; Sahoo, Yudhisthira; Agarwal, Sandip; Meredith, Carson; Kumar, Satish

doi:10.1016/j.ces.2021.116495

Cited by 9 publications

(5 citation statements)

References 23 publications

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“…The model calculates the temperature distribution of the moving tow due to the power generated from the Joule heating and contact resistance heating separately. The heat produced by Joule heating in the carbon fibre tow Q JH (W m −3 ) can be expressed by Equation (2) [26]: where I is the current passing through the carbon fibre (A), σ is the electrical conductivity of carbon fibre (S/m) and V is the volume of the heated section of carbon fibre (m 3 ). The heat equation then can be rewritten as Equation (3) [15]: where c is the specific heat capacity (kJ kg −1 K), ρ is the density (kg m −3 ), T is the temperature (K), t is the time (s) and k is the thermal conductivity tensor of the carbon fibre tow (W m K −1 ).…”

Section: Resultsmentioning

confidence: 99%

“…The heat produced by Joule heating in the carbon fibre tow QJH (W/m 3 ) can be expressed by Eq. 2 [27]:…”

Section: Computational Modelmentioning

confidence: 99%

Section: Contact Resistance Valuesmentioning

confidence: 99%

“…In most Joule heating systems of composite materials, electrodes and the composite material are stationary [1,2,4,5,[26][27][28][29][30]. In these systems, contact resistances can be reduced by improving the contact interface, such as sanding the electrode/composite surfaces [9] or applying silver paste [5,26,30]. However, the towpregging line is a dynamic system with rotating roller electrodes and moving carbon fibre tow, which was designed to have high production speeds (up to 30 m min −1 ).…”

Section: Contact Resistance Valuesmentioning

confidence: 99%

Section: Computational Modelmentioning

confidence: 99%

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Contact resistance heating of unidirectional carbon fibre tows in a powder-epoxy towpregging line

Çelik

Noble

Haseeb

et al. 2022

Plastics, Rubber and Composites

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Joule heating is a promising heating method used in the composites industry, which is characterised by high heating efficiencies and low power consumption. However, imperfect contact at the electrode/material interfaces results in contact resistances. Contact resistances play a major role in Joule heating systems, therefore, identifying contact resistances provides a better understanding of the heating process. Furthermore, the accuracy of the process models of heating systems can be increased by taking contact resistances into account. In this study, contact resistances of the Joule heating section in a powder-epoxy based towpregging line were explored. For different process parameters, such as production speed, tension and temperature, contact resistances occurring between metal roller electrodes and dry carbon fibre tows (i.e. without powder-epoxy) were measured to gain an insight into the heating process. Moreover, the effect of contact resistance heating on the overall temperature profile of the carbon fibre tows was determined with an infrared thermal camera. A simplified finite element model was developed to calculate the temperature distribution along the moving carbon fibre tow, which showed a good agreement with the experimental data. Results suggest that contact resistances in the towpregging line were significant and contact resistance heating changed the heating profile.

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Section: Resultsmentioning

confidence: 99%

“…The heat produced by Joule heating in the carbon fibre tow QJH (W/m 3 ) can be expressed by Eq. 2 [27]:…”

Section: Computational Modelmentioning

confidence: 99%

Section: Contact Resistance Valuesmentioning

confidence: 99%

Section: Contact Resistance Valuesmentioning

confidence: 99%

Section: Computational Modelmentioning

confidence: 99%

See 3 more Smart Citations

Contact resistance heating of unidirectional carbon fibre tows in a powder-epoxy towpregging line

Çelik

Noble

Haseeb

et al. 2022

Plastics, Rubber and Composites

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Carbon Fibers

Newcomb

2021

Encyclopedia of Polymer Science and Technology

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Carbon fibers are primarily used as reinforcing materials to increase the strength and stiffness of advanced composites and are commonly manufactured using polyacrylonitrile (PAN), isotropic pitch, mesophase pitch, or regenerated cellulose as a precursor fiber material. Commercially available carbon fibers from PAN or pitch possess low density (1.75–2.20 g/cm 3 ), high tensile strength (3–7 GPa) and tensile modulus (200–935 GPa), as well as high compressive strength (1–3 GPa) and compressive modulus (100–300 GPa). Continued development of alternative precursor materials and lower energy intensive stabilization and carbonization process improvements in the carbon fiber manufacturing process are underway.

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Effects of KBrO3 on Chemical, Aggregation and Morphological Structure of Polyacrylonitrile (PAN) Precursor Fibers

Chen

et al. 2023

Fibers Polym

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Continuous stabilization of polyacrylonitrile (PAN) - carbon nanotube (CNT) fibers by Joule heating

Cited by 9 publications

References 23 publications

Contact resistance heating of unidirectional carbon fibre tows in a powder-epoxy towpregging line

Contact resistance heating of unidirectional carbon fibre tows in a powder-epoxy towpregging line

Carbon Fibers

Effects of KBrO3 on Chemical, Aggregation and Morphological Structure of Polyacrylonitrile (PAN) Precursor Fibers

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