Recycled Tire Fibers used as Reinforcement for Recycled Polyethylene Composites

IF 4 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Fibers Pub Date : 2023-08-31 DOI:10.3390/fib11090074

H. Kazemi, A. Fazli, Jean Philippe Ira, D. Rodrigue

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Abstract

This study proposes a simple approach to separate most rubber particles from recycled tire fibers (RTFs) and to determine their rubber content using thermogravimetric analysis (TGA)/calcination. Furthermore, scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDAX), and Fourier transform infrared spectroscopy (FTIR) analyses are used to investigate the separation process and materials compositions. Afterwards, a series of composites based on recycled post-consumer low-density polyethylene (rLDPE) with clean fiber (CF) and residual ground rubber particles (GR) is prepared at different filler concentrations (0–30%) via extrusion compounding before using compression molding and injection molding for comparison. In all cases, injection molding leads to higher strength and modulus but lower elongation at break. The results show that incorporating 30 wt.% of CF into rLDPE yields a remarkable improvement in tensile strength (15%), tensile modulus (192%) and flexural modulus (142%). On the other hand, the incorporation of up to 30 wt.% of GR results in a reduction in both tensile strength and flexural modulus by 15%, confirming the critical role of the cleaning process for RTF in achieving the best results.

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再生轮胎纤维用于再生聚乙烯复合材料的增强

本研究提出了一种简单的方法，可以从回收轮胎纤维（RTF）中分离出大多数橡胶颗粒，并使用热重分析（TGA）/煅烧法测定其橡胶含量。此外，还使用扫描电子显微镜（SEM）、能量色散X射线光谱（EDAX）和傅里叶变换红外光谱（FTIR）分析来研究分离过程和材料组成。然后，在使用压缩成型和注射成型进行比较之前，通过挤出复合，在不同填料浓度（0–30%）下，制备了一系列基于回收消费后低密度聚乙烯（rLDPE）、清洁纤维（CF）和残余研磨橡胶颗粒（GR）的复合材料。在所有情况下，注射成型导致较高的强度和模量，但较低的断裂伸长率。结果表明，在rLDPE中加入30wt%的CF可显著提高拉伸强度（15%）、拉伸模量（192%）和弯曲模量（142%）。另一方面，高达30wt.%的GR的加入导致拉伸强度和弯曲模量降低15%，证实了RTF清洁过程在获得最佳结果方面的关键作用。

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