Investigation of the Influence of Hexabenzocoronene in Polyacrylonitrile-Based Precursors for Carbon Fibers

IF 4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Fibers Pub Date : 2023-01-28 DOI:10.3390/fib11020014

Romy Peters, Dawon Jang, D. S. Wolz, Sungho Lee, H. Jäger, Mirko Richter, C. Cherif, Kiryl Vasiutovich, Marcus Richter, Xinliang Feng, T. Behnisch, M. Gude

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引用次数: 0

Abstract

For several decades, carbon fibers have been used for lightweight engineering in aircraft automotive and sports industries, mostly based on high-quality polyacrylonitrile (PAN). We investigated a novel PAN-based precursor fiber (PF) modified with a polycyclic aromatic hydrocarbon, namely hexabenzocoronene (HBC), which is expected to improve the thermal conversion process and to create a carbon fiber (CF) with enhanced mechanical properties. For this purpose, the novel PF and a spun-like homopolymeric PAN-based PF were thermally stabilized and carbonized in continuous lab-scale plants. The effect of the additive HBC on the conversion processes, fiber diameter and shape, density, and mechanical properties were investigated. The results showed that HBC seems to support stabilization reactions, and HBC/PAN-based PF show potentially higher stretchability of PF and stabilized fiber. The modified CF showed an improvement in Young’s modulus of about 25% at the same tensile strength compared to the unmodified PAN-based CF, resulting from enhanced crystalline orientation. The results showed a high potential of the HBC/PAN for energy-efficient production. In particular, the influence on tensile strength and modulus under optimized process conditions, as well as the possibility to use low quality PAN, need to be further investigated.

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聚丙烯腈基碳纤维前体中六苯并呋喃的影响研究

几十年来，碳纤维一直被用于飞机、汽车和体育行业的轻质工程，主要基于高质量聚丙烯腈（PAN）。我们研究了一种用多环芳烃改性的新型PAN基前体纤维（PF），即六苯并呋喃酮（HBC），该纤维有望改善热转化过程，并制备出具有增强机械性能的碳纤维（CF）。为此，在连续实验室规模的装置中对新型PF和类纺丝均聚PAN基PF进行热稳定和碳化。研究了添加剂HBC对转化过程、纤维直径和形状、密度以及力学性能的影响。结果表明，HBC似乎支持稳定反应，并且基于HBC/PAN的PF显示出潜在的更高的PF和稳定纤维的拉伸性。与未改性的PAN基CF相比，在相同的拉伸强度下，改性的CF显示出约25%的杨氏模量的改善，这是由于结晶取向的增强。结果表明，HBC/PAN在节能生产方面具有很高的潜力。特别是，在优化的工艺条件下对拉伸强度和模量的影响，以及使用低质量PAN的可能性，需要进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fibers Engineering-Civil and Structural Engineering

CiteScore

7.00

自引率

7.70%

发文量

审稿时长

11 weeks

期刊介绍： Fibers (ISSN 2079-6439) is a peer-reviewed scientific journal that publishes original articles, critical reviews, research notes and short communications on the materials science and all other empirical and theoretical studies of fibers, providing a forum for integrating fiber research across many disciplines. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Electronic files or software regarding the full details of the calculation and experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. The following topics are relevant and within the scope of this journal: -textile fibers -natural fibers and biological microfibrils -metallic fibers -optic fibers -carbon fibers -silicon carbide fibers -fiberglass -mineral fibers -cellulose fibers -polymer fibers -microfibers, nanofibers and nanotubes -new processing methods for fibers -chemistry of fiber materials -physical properties of fibers -exposure to and toxicology of fibers -biokinetics of fibers -the diversity of fiber origins