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Open AccessArticle

Rapid and Continuous Preparation of Polyacrylonitrile-Based Carbon Fibers with Electron-Beam Irradiation Pretreatment

1
Key Laboratory of Carbon Fiber and Functional Polymers, Ministry of Education, Beijing University of Chemical Technology, Chao-Yang District, Beijing 100029, China
2
SINOPEC Shanghai Research Institute of Petrochemical Technology, 1658 Pudong North Road, Pudong District, Shanghai 201208, China
*
Authors to whom correspondence should be addressed.
Materials 2018, 11(8), 1270; https://doi.org/10.3390/ma11081270
Received: 19 June 2018 / Revised: 16 July 2018 / Accepted: 18 July 2018 / Published: 24 July 2018
(This article belongs to the Section Manufacturing Processes and Systems)
Thermal stabilization is a critical, yet time- and energy-consuming process during the preparation of PAN-based carbon fibers. In this work, automobile-grade carbon fibers with a 2.85 GPa tensile strength and a 203 GPa modulus are continuously produced with electron-beam (e-beam) irradiation pretreatment and 24 min thermal stabilization. Thermal and structural analyses reveal that e-beam irradiation can lower the onset temperature of the cyclization reaction and mitigate the heat release. Meanwhile, during the process of stabilization, e-beam irradiation can facilitate the evolution of both the chemical structure and the crystalline structure of polyacrylonitrile (PAN) fibers. Comparing to the industrial production of carbon fiber with a 40 min stabilization time, e-beam irradiated PAN fibers can achieve the same degree of stabilization with a 40% time savings. View Full-Text
Keywords: carbon fibers; rapid stabilization; electron-beam irradiation; continuous production carbon fibers; rapid stabilization; electron-beam irradiation; continuous production
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MDPI and ACS Style

Yang, J.; Liu, Y.; Liu, J.; Shen, Z.; Liang, J.; Wang, X. Rapid and Continuous Preparation of Polyacrylonitrile-Based Carbon Fibers with Electron-Beam Irradiation Pretreatment. Materials 2018, 11, 1270.

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