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Polymers
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High-Performance Fiber-Reinforced Polymer Composites
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High-Performance Fiber-Reinforced Polymer Composites

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: closed (31 December 2024) | Viewed by 3768

Special Issue Editor

Prof. Dr. Tao Sun

E-Mail Website
Guest Editor
College of Textile Science and Engineering, Jiangnan University, Wuxi, China
Interests: nanocomposites; polymer composites; fiber-reinforced nanocomposites

Special Issue Information

Dear Colleagues,

Fiber-based composites have attracted wide attention due to their low weight, high strength, corrosion resistance, and high durability. By functionally modifying the fiber materials, fibers-based composite materials can not only maintain their original properties but also improve or overcome the weaknesses of any single material. Therefore, fiber-reinforced composites have been among the most important developed industrial materials for modern science and technology. This Special Issue of the open-access journal Polymers aims to collect cutting-edge original research papers and reviews on the topic of “High-Performance Fiber-Reinforced Polymer Composites”. Special emphasis will be placed on but not limited to the following:

  • Surface modification of fibers;
  • Synthesis of fiber-based nanocomposites;
  • Characterization of fiber-based composites;
  • Failure simulation of fiber-based nanocomposites;
  • Interface regulation of fiber-based nanocomposites;
  • Performance evaluation of fiber-based nanocomposites;
  • Application of fiber-based nanocomposites in special fields.

Prof. Dr. Tao Sun
Guest Editor

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • tailored structures
  • structural battery
  • interface debonding
  • structural composites
  • fiber surface treatment
  • fiber-reinforced polymer matrix
  • ultra-low-temperature environment

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Published Papers (4 papers)

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Research

19 pages, 10478 KiB  
Article
Fracture Resistance of Glass-Fiber-Reinforced Direct Restorations on Endodontically Treated Molar Teeth with Furcal Perforation
by Ecehan Hazar and Ahmet Hazar
Polymers 2025, 17(3), 370; https://doi.org/10.3390/polym17030370 - 29 Jan 2025
Viewed by 412
Abstract
This in vitro study evaluated short-fiber-reinforced composite materials and fiber-reinforced restorations of endodontically treated molars with furcal perforation. The endodontic treatment and mesio-occlusal–distal cavity preparation of 126 two-rooted mandibular third molars were performed. Eighteen non-perforated teeth were restored with resin composite as the [...] Read more.
This in vitro study evaluated short-fiber-reinforced composite materials and fiber-reinforced restorations of endodontically treated molars with furcal perforation. The endodontic treatment and mesio-occlusal–distal cavity preparation of 126 two-rooted mandibular third molars were performed. Eighteen non-perforated teeth were restored with resin composite as the control group. Furcal perforations and repair were performed on 108 teeth that were divided into six experimental groups: resin composite (RC), everX Flow (EXF), everX Posterior (EXP), Bioblock (BB), modified transfixed (MT), and horizontal glass-fiber (HGF) groups (n = 18). Fracture resistance tests were performed at an angle of 30◦ using a universal testing machine under static loading, and fracture patterns were classified. Welch’s analysis of variance, Pearson chi-square, and Tamhane post hoc tests (p = 0.05) were used to analyze the data (p = 0.05). The highest fracture resistance values were seen with the HGF (596.305 N), followed by MT (540.365 N), BB (477.906 N), EXP (476.647 N), EXF (414.462 N), control (413.811 N), and RC (335.325 N) groups (p < 0.001). There was no significant difference between the BB and EXP groups or between the EXF and control groups (p > 0.05). In terms of the dominant fracture pattern, the HGF and MT groups were repairable and possibly repairable, whereas the control, RC, and EXP groups were unrepairable. The EXF and BB groups were almost equally divided between possibly repairable and unrepairable. Restorations using horizontal fiber techniques and short-fiber-reinforced materials increased the fracture resistance of endodontically treated teeth with furcal perforation. Full article
(This article belongs to the Special Issue High-Performance Fiber-Reinforced Polymer Composites)
26 pages, 18063 KiB  
Article
Dynamic Tensile Response of Basalt Fibre Grids for Textile-Reinforced Mortar (TRM) Strengthening Systems
by Amrita Milling, Giuseppina Amato, Su Taylor, Pedro Moreira and Daniel Braga
Polymers 2025, 17(2), 132; https://doi.org/10.3390/polym17020132 - 8 Jan 2025
Viewed by 469
Abstract
The present work constitutes the initial experimental effort to characterise the dynamic tensile performance of basalt fibre grids employed in TRM systems. The tensile behaviour of a bi-directional basalt fibre grid was explored using a high-speed servo-hydraulic testing machine with specialised grips. Deformation [...] Read more.
The present work constitutes the initial experimental effort to characterise the dynamic tensile performance of basalt fibre grids employed in TRM systems. The tensile behaviour of a bi-directional basalt fibre grid was explored using a high-speed servo-hydraulic testing machine with specialised grips. Deformation and failure modes were captured using a high-speed camera. Tensile strain values were extracted from the recorded images using the MATLAB computer vision tool, ‘vision.PointTracker’. The specimens, consisting of one and four rovings, were tested at intermediate (1–8/s) and quasi-static (10−3/s) strain rates. After the tensile tests, scanning electron microscopy (SEM) analyses were performed to examine the microscopic failure of the material. Linear and non-linear stress–strain behaviours were observed in the range of 10−3 to 1/s and 4 to 8/s, respectively. Tensile strength, ultimate strain, toughness, and elastic modulus increased at intermediate strain rates. Overall, the dynamic increase factors for these properties, except for the latter, were between 1.4 and 2.3. At the macroscopic level, the grid failed in a brittle manner. However, microscopic analyses revealed that the failure modes of the fibre and polymer coating were strain-rate sensitive. The enhanced tensile performance of the grid under dynamic loading conditions rendered it suitable for retrofitting structures prone to extreme loading conditions. Full article
(This article belongs to the Special Issue High-Performance Fiber-Reinforced Polymer Composites)
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13 pages, 8313 KiB  
Article
Influence of Modified PVA Fiber on Ultra-High Performance Concrete and Its Enhancing Mechanism
by Zhiyuan Chen, Hongyu Fan, Wanying Zheng, Siheng Zhang, Xi Wu, Tengfei Fu and Demei Yu
Polymers 2024, 16(23), 3449; https://doi.org/10.3390/polym16233449 - 9 Dec 2024
Viewed by 799
Abstract
In this study, the properties of ultra-high-performance concrete (UHPC) were enhanced by adding modified polyvinyl alcohol (PVA) fibers. The specimens with different curing ages were evaluated in various aspects to investigate the effects of different dosages, lengths, and surface treatments of PVA fibers [...] Read more.
In this study, the properties of ultra-high-performance concrete (UHPC) were enhanced by adding modified polyvinyl alcohol (PVA) fibers. The specimens with different curing ages were evaluated in various aspects to investigate the effects of different dosages, lengths, and surface treatments of PVA fibers on the performance of UHPC. The performance was compared with that of steel fiber-reinforced UHPC with the same ratio and multiple dosages. At the same time, the distribution of fibers and the morphology of fibers were observed by a scanning electron microscope, and the mechanism of fiber reinforcement was discussed. The results showed that the mechanical properties were significantly affected by the fiber dosage, length, and surface treatment. Based on the test results, the optimum PVA fiber addition can increase the compressive strength and flexural strength by 12.0% and 6.0% compared to the control UHPC without fibers. A comprehensive evaluation was carried out and indicated that the optimum PVA fiber addition has the potential to replace 0.5% steel fiber in certain conditions. Full article
(This article belongs to the Special Issue High-Performance Fiber-Reinforced Polymer Composites)
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19 pages, 3703 KiB  
Article
Freeze–Thaw Damage Mechanism Analysis of SBS Asphalt Mixture Containing Basalt Fiber and Lignocellulosic Fiber Based on Microscopic Void Characteristics
by Wensheng Wang, Liansheng Yang, Honghai Cui, Fei Wu, Yongchun Cheng and Chunyu Liang
Polymers 2023, 15(19), 3887; https://doi.org/10.3390/polym15193887 - 26 Sep 2023
Cited by 6 | Viewed by 1370
Abstract
Freeze–thaw effects pose the significant challenge to asphalt pavement durability, leading to various types of distress and deterioration. This study investigates the freeze–thaw damage mechanism of Styrene–Butadiene–Styrene (SBS) asphalt mixtures containing reinforcement fibers, specifically basalt fiber as well as lignocellulosic fiber, through a [...] Read more.
Freeze–thaw effects pose the significant challenge to asphalt pavement durability, leading to various types of distress and deterioration. This study investigates the freeze–thaw damage mechanism of Styrene–Butadiene–Styrene (SBS) asphalt mixtures containing reinforcement fibers, specifically basalt fiber as well as lignocellulosic fiber, through a microscopic void characteristics analysis. This investigation aims to understand how the presence of basalt fiber as well as lignocellulosic fiber influences void characteristics for SBS asphalt mixtures during freeze–thaw cycles. A comprehensive experimental program was conducted for the void and mechanical characteristics, which involved the preparation of SBS asphalt mixtures containing basalt fiber as well as lignocellulosic fiber. The mechanical performances of the two types of asphalt mixtures decrease with more freeze–thaw cycles. The decline is faster initially and gradually slows down. Basalt-fiber-modified SMA-13 has higher air void content and mechanical properties compared to lignocellulosic-fiber-modified SMA-13, indicating that adding basalt fibers improves the mechanical performances of SMA-13 asphalt mixture. Both types of asphalt mixtures experience increasing damage with more freeze–thaw cycles, indicating irreversible damage. The stability damage levels are similar, but basalt-fiber-modified SMA-13 has lower splitting strength damage and stiffness modulus damage compared to lignocellulosic-fiber-modified SMA-13. This suggests that adding basalt fibers enhances the resistance to freeze–thaw damage. Surface wear of asphalt mixtures under repeated freeze–thaw cycles is a complex and dynamic process. Fractal theory can uncover the mechanism of surface wear, while describing surface wear behavior and void deformation characteristics using fractal dimension, angularity, roundness, and aspect ratio is a logical and effective approach. The findings provide insights into freeze–thaw damage mechanisms at the microscopic level, highlighting the effects of reinforcement fibers. They provide valuable insights that can be used to optimize the design and maintenance of asphalt pavements. Full article
(This article belongs to the Special Issue High-Performance Fiber-Reinforced Polymer Composites)
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