Investigation of recycled carbon fiber-reinforced ultrafine-grain carbon-matrix composites

IF 8.6 2区工程技术 Q1 ENERGY & FUELS

Sustainable Materials and Technologies Pub Date : 2024-07-01 DOI:10.1016/j.susmat.2024.e01033

Xiangbao Lin , Lei Zheng , Xiaodong Wang , Ping Xu , Chen Zeng , Mingdong Liao , Mingyu Zhang , Qizhong Huang

{"title":"Investigation of recycled carbon fiber-reinforced ultrafine-grain carbon-matrix composites","authors":"Xiangbao Lin , Lei Zheng , Xiaodong Wang , Ping Xu , Chen Zeng , Mingdong Liao , Mingyu Zhang , Qizhong Huang","doi":"10.1016/j.susmat.2024.e01033","DOIUrl":null,"url":null,"abstract":"<div><p>To broaden the usefulness of recycled carbon fibers and develop the high value-added product, the recycled carbon fiber-reinforced carbon-matrix composites were prepared using ultrafine-grain coke as a filler and coal tar pitch as a binder via a liquid mixing process. A comprehensive study and investigation of the microstructures and properties of recycled carbon fibers and composites were conducted. It was found that the recycled PAN-based carbon fiber (rPCF) outperformed the recycled rayon-based carbon fiber (rRCF) in terms of fiber integrity and pitch-coated effect in the recycling and forming processes. By relieving thermal stress, lowering stacking pores, and inhibiting the growth of shrinkage pores, the rCF can promote the sintering of the green body. The flexural strength of rPCF-reinforced carbon-matrix composite (30.70 MPa) and rRCF-reinforced carbon-matrix composite (20.75 MPa) increased by 60.6% and 8.6% than that of pristine carbon-matrix composite (19.11 MPa), respectively. The difference in mechanical properties between rPCF-reinforced carbon-matrix composite and rRCF-reinforced carbon-matrix composite is attributed to the mechanical interlock mechanism and fiber pull-out mechanism. This work provides a propagable, affordable, and environment-friendly idea for recycling waste carbon fiber and producing recycled carbon fiber reinforced composites.</p></div>","PeriodicalId":22097,"journal":{"name":"Sustainable Materials and Technologies","volume":null,"pages":null},"PeriodicalIF":8.6000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sustainable Materials and Technologies","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214993724002136","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENERGY & FUELS","Score":null,"Total":0}

引用次数: 0

Abstract

To broaden the usefulness of recycled carbon fibers and develop the high value-added product, the recycled carbon fiber-reinforced carbon-matrix composites were prepared using ultrafine-grain coke as a filler and coal tar pitch as a binder via a liquid mixing process. A comprehensive study and investigation of the microstructures and properties of recycled carbon fibers and composites were conducted. It was found that the recycled PAN-based carbon fiber (rPCF) outperformed the recycled rayon-based carbon fiber (rRCF) in terms of fiber integrity and pitch-coated effect in the recycling and forming processes. By relieving thermal stress, lowering stacking pores, and inhibiting the growth of shrinkage pores, the rCF can promote the sintering of the green body. The flexural strength of rPCF-reinforced carbon-matrix composite (30.70 MPa) and rRCF-reinforced carbon-matrix composite (20.75 MPa) increased by 60.6% and 8.6% than that of pristine carbon-matrix composite (19.11 MPa), respectively. The difference in mechanical properties between rPCF-reinforced carbon-matrix composite and rRCF-reinforced carbon-matrix composite is attributed to the mechanical interlock mechanism and fiber pull-out mechanism. This work provides a propagable, affordable, and environment-friendly idea for recycling waste carbon fiber and producing recycled carbon fiber reinforced composites.

查看原文本刊更多论文

再生碳纤维增强超细晶粒碳基质复合材料的研究

为拓宽再生碳纤维的用途，开发高附加值产品，以超细晶粒焦炭为填料，煤沥青为粘结剂，通过液态混合工艺制备了再生碳纤维增强碳基质复合材料。对再生碳纤维及复合材料的微观结构和性能进行了全面的研究和调查。研究发现，在回收和成型过程中，再生 PAN 基碳纤维（rPCF）在纤维完整性和沥青涂层效果方面优于再生人造丝基碳纤维（rRCF）。通过缓解热应力、降低堆积孔隙和抑制收缩孔隙的生长，rCF 可以促进生坯的烧结。与原始碳基复合材料（19.11 兆帕）相比，rPCF 增强碳基复合材料（30.70 兆帕）和 rRCF 增强碳基复合材料（20.75 兆帕）的抗弯强度分别提高了 60.6% 和 8.6%。rPCF 增强碳基复合材料与 rRCF 增强碳基复合材料在力学性能上的差异归因于机械互锁机制和纤维拉出机制。这项工作为回收废旧碳纤维和生产再生碳纤维增强复合材料提供了一种可推广、经济实惠且环保的思路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Sustainable Materials and Technologies Energy-Renewable Energy, Sustainability and the Environment

CiteScore

13.40

自引率

4.20%

发文量

158

审稿时长

45 days

期刊介绍： Sustainable Materials and Technologies (SM&T), an international, cross-disciplinary, fully open access journal published by Elsevier, focuses on original full-length research articles and reviews. It covers applied or fundamental science of nano-, micro-, meso-, and macro-scale aspects of materials and technologies for sustainable development. SM&T gives special attention to contributions that bridge the knowledge gap between materials and system designs.