1. Stabilization of polyacrylonitrile-based fiber with a quasi-traveling microwave applicator.
- Author
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Hsu, Hung-Chun, Chao, Hsien-Wen, Huang, Wen-Chang, and Chang, Tsun-Hsu
- Subjects
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CARBON fiber-reinforced plastics , *PERMITTIVITY measurement , *STANDING waves , *DIFFERENTIAL scanning calorimetry , *CLEAN energy , *POLYACRYLONITRILES - Abstract
This study introduces a novel microwave applicator and optimized processing conditions to enhance the stability of Polyacrylonitrile (PAN)-based precursor fiber (PF). The innovative microwave applicator facilitates the propagation of the electromagnetic (EM) field akin to a quasi-traveling wave, thus circumventing standing wave nodes. This ensures a uniform thermal distribution and broadens the heating zone. Utilizing this applicator, the PF undergoes thermal stabilization in a streamlined two-step process, completing in just 13 min, a significant improvement over the conventional 90-min process. This not only saves manufacturing time, promoting energy efficient manufacturing but also aligns with the global trend towards green energy and lightweight carbon fiber-reinforced polymer matrix composites, potentially catalyzing rapid economic growth. Fiber characterization through Raman spectroscopy (RS), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and complex permittivity measurements reveals that the microwave-processed fiber meets the standard of commercial stabilization fiber (SF). [ABSTRACT FROM AUTHOR]
- Published
- 2024
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