Time dependent structure and property evolution in fibres during continuous carbon fibre manufacturing

Nunna, Srinivas, Maghe, Maxime, Rana, Rohit, Varley, Russell, Knorr Jr, Daniel B, Sands, James M, Creighton, Claudia, Henderson, Luke C and Naebe, Minoo 2019, Time dependent structure and property evolution in fibres during continuous carbon fibre manufacturing, Materials, vol. 12, no. 7, pp. 1-10, doi: 10.3390/ma12071069.

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Title Time dependent structure and property evolution in fibres during continuous carbon fibre manufacturing
Author(s) Nunna, Srinivas
Maghe, Maxime
Rana, Rohit
Varley, RussellORCID iD for Varley, Russell orcid.org/0000-0002-3792-1140
Knorr Jr, Daniel B
Sands, James M
Creighton, Claudia
Henderson, Luke CORCID iD for Henderson, Luke C orcid.org/0000-0002-4244-2056
Naebe, MinooORCID iD for Naebe, Minoo orcid.org/0000-0002-0607-6327
Journal name Materials
Volume number 12
Issue number 7
Article ID 1069
Start page 1
End page 10
Total pages 10
Publisher MDPI
Place of publication Basel, Switzerland
Publication date 2019
ISSN 1996-1944
Keyword(s) carbon fibres
microstructure
polyacrylonitrile fibres
tensile properties
thermal stabilization
Summary Here we report on how residence time influences the evolution of the structure and properties through each stage of the carbon fibre manufacturing process. The chemical structural transformations and density variations in stabilized fibres were monitored by Fourier Transform Infrared Spectroscopy and density column studies. The microstructural evolution and property variation in subsequent carbon fibres were studied by X-ray diffraction and monofilament tensile testing methods, which indicated that the fibres thermally stabilized at longer residence times showed higher degrees of structural conversion and attained higher densities. Overall, the density of stabilized fibres was maintained in the optimal range of 1.33 to 1.37 g/cm³. Interestingly, carbon fibres manufactured from higher density stabilized fibres possessed lower apparent crystallite size (1.599 nm). Moreover, the tensile strength of carbon fibres obtained from stabilized fibres at the high end of the observed range (density: 1.37 g/cm³) was at least 20% higher than the carbon fibres manufactured from low density (1.33 g/cm³) stabilized fibres. Conversely, the tensile modulus of carbon fibres produced from low density stabilized fibres was at least 17 GPa higher than those from high density stabilized fibres. Finally, it was shown that there is potential to customize the required properties of resultant carbon fibres suiting specific applications via careful control of residence time during the stabilization stage.
Language eng
DOI 10.3390/ma12071069
Indigenous content off
Field of Research 030603 Colloid and Surface Chemistry
030306 Synthesis of Materials
03 Chemical Sciences
09 Engineering
HERDC Research category C1 Refereed article in a scholarly journal
Grant ID IH140100018
DP180100094
IC160100032
N62909-18-1-2024
Free to Read? Yes
Persistent URL http://hdl.handle.net/10536/DRO/DU:30120780

Document type: Journal Article
Collection: GTP Research
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