Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review
Mechanism and application of halogenation–dehalogenation in the development of pitch-based carbon fiber: A review
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DOI：
10.1177/15589250231186945
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发表时间：
2023-01
影响因子：
2.9
通讯作者：
Jinchang Liu;Q. Liu;Xiaoya An;Tong Wang;Dingcheng Liang;Q. Xie
中科院分区：
文献类型：
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作者：
Jinchang Liu;Q. Liu;Xiaoya An;Tong Wang;Dingcheng Liang;Q. Xie
沥青基碳纤维作为重要的工程材料之一，已广泛应用于航空航天、国防、体育等领域。在沥青基碳纤维的长期生产过程中，沥青原丝的性能对所制得的碳纤维的力学性能有着重要的影响。因此，采用有效的手段提高沥青前驱体的性能是至关重要的。卤化脱卤法是近年来发展起来的一种从分子尺度上可控合成沥青前驱体的新方法，包括氟化脱卤法、氯化脱氯法和溴化脱溴法。本文综述了各种卤化脱卤方法的机理、应用及优缺点。
Pitch-based carbon fiber, as one of the important engineering materials, has been widely used in aerospace, defense, sports, and other fields. In the long production process of pitch-based carbon fiber, the property of pitch precursor is significant for the mechanical performance of obtained carbon fiber. Thus, it is crucial to improve the property of pitch precursor by efficient means. Halogenation–dehalogenation is a newly developed method for the controllable synthesis of a pitch precursor from the molecular dimension, including fluorination–defluorination, chlorination–dechlorination, and bromination–debromination. This work reviewed the mechanism and application, as well as the advantages and disadvantages of each halogenation–dehalogenation method.