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Applied Sciences
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Trends and Prospects in Fibre Composites
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Trends and Prospects in Fibre Composites

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 9666

Special Issue Editor

Prof. Dr. Han-Yong Jeon

E-Mail Website
Guest Editor
Department of Chemical Engineering, Inha University, Incheon 22212, Republic of Korea
Interests: polymers on civil engineering; geosynthetics polymers; technical polymers; sustainable polymer materials
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Fibre-based composites are widely utilised in a broad range of applications, due to their specific properties, such as low prices, great availability, health advantages, easy processing, renewability, biodegradability and recyclability. These have made fibre composites popular in diverse applications.

Composite fibres are built up of two or more different components, of which the main component is the foundation of the fibre, and other components are responsible for functionalization.

The aim of this Special Issue should be discussed in articles on fibres and their composites, including, but not limited to, the following aspects:

  • Manufacturing processes of fiber composites;
  • Characterisation of fiber composite properties;
  • Fibre treatments;
  • Properties of composite fibre;
  • Application to engineering fields.

Prof. Dr. Han-Yong Jeon
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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. Applied Sciences 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 2400 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

  • fibre composites
  • mechanical characterisation
  • manufacturing
  • engineering fields

Published Papers (3 papers)

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Research

11 pages, 4269 KiB  
Article
Development of PA6/GF Long-Fiber-Reinforced Thermoplastic Composites Using Pultrusion and Direct Extrusion Manufacturing Processes
by Sung-Eun Kim, Jun-Geol Ahn, Seungjae Ahn, Do-Hyung Park, Da-Hee Choi, Jae-Chul Lee, Hyun-Ik Yang and Ki-Young Kim
Appl. Sci. 2022, 12(10), 4838; https://0-doi-org.brum.beds.ac.uk/10.3390/app12104838 - 10 May 2022
Cited by 5 | Viewed by 3128
Abstract
The mechanical properties of polyamide 6 glass fiber (PA6/GF) long-fiber-reinforced thermoplastic (LFT) composites were characterized by studying the process conditions in terms of manufacturing methods (direct extrusion and pultrusion) and material characteristics (void content and fiber volume fraction). The LFT composites prepared through [...] Read more.
The mechanical properties of polyamide 6 glass fiber (PA6/GF) long-fiber-reinforced thermoplastic (LFT) composites were characterized by studying the process conditions in terms of manufacturing methods (direct extrusion and pultrusion) and material characteristics (void content and fiber volume fraction). The LFT composites prepared through the pultrusion process have higher mechanical properties than those prepared via the direct extrusion process. The PA6/GF composite prepared via pultrusion had the tensile and flexural strengths of 233 MPa and 338 MPa, respectively. The impact strength measured using the Izod method was 296 J/m, which is 64% higher than that of the composite fabricated via the direct process. The optical microscope images showed that the glass fiber length of the pultruded composites is longer than the fiber length of the direct composites, leading to higher mechanical properties of the LFT composites prepared through the pultrusion process. Moreover, the interfacial shear strength between the resin and the fiber, measured via single fiber pullout tests, can account for the higher fiber reinforcing efficiency. If the void content of a composite is sufficiently small to not be detrimental to the composites, the mechanical properties are observed to be proportional to the fiber volume fraction of the composites. Full article
(This article belongs to the Special Issue Trends and Prospects in Fibre Composites)
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12 pages, 865 KiB  
Article
Analysis of Factors Affecting Field Applicability and Long-Term Performance Analysis of LCP Woven Geotextile for Soft Ground Reinforcement
by Yu Yan, Wangyu Hahm, Seunghyun Kim, Jiho Youk and Hanyong Jeon
Appl. Sci. 2022, 12(3), 1345; https://0-doi-org.brum.beds.ac.uk/10.3390/app12031345 - 27 Jan 2022
Viewed by 2040
Abstract
In recent years, natural disasters have been increasing worldwide due to rapid climate change, and the damage to ground structures is increasing due to the destruction of the ground. Damage to the ground structure can be reduced or eliminated by using LCP woven [...] Read more.
In recent years, natural disasters have been increasing worldwide due to rapid climate change, and the damage to ground structures is increasing due to the destruction of the ground. Damage to the ground structure can be reduced or eliminated by using LCP woven geotextiles as ground reinforcement. Therefore, in this study, the tensile properties, reduction factor affecting long-term performance, creep behavior, and fatigue properties of LCP woven geotextile were tested and analyzed. As a result, in the case of tensile properties, the maximum tensile strength of the LCP woven geotextile was 192.94 kN/m2 in the MD direction, and it was generally constructed so that the load was transmitted. The total reduction factor is 1.86, which could be applied within 53.8% of the design strength when applied to the field. In addition, it was considered that the effect of the reduction factor for creep deformation on the long-term performance was dominant. Through the analysis of the creep behavior and fatigue characteristics, considering that the creep limit strain was 10%, if an earthquake occurred after 50 years of construction, it can be predicted that up to 90% of UTS would exhibit seismic performance. When LCP woven geotextile was applied as reinforcement, if the cyclic load due to fatigue failure was less than 478,000 times per year, it was considered that there was little possibility of the collapse of the ground structure. Full article
(This article belongs to the Special Issue Trends and Prospects in Fibre Composites)
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13 pages, 5984 KiB  
Article
Preparation and Characterization of Glass-Fiber-Reinforced Modified Polyphenylene Oxide by a Direct Fiber Feeding Extrusion Process
by SeungJae Ahn, Jae-Chul Lee and Ki-Young Kim
Appl. Sci. 2021, 11(21), 10266; https://0-doi-org.brum.beds.ac.uk/10.3390/app112110266 - 01 Nov 2021
Cited by 10 | Viewed by 2959
Abstract
Polyphenylene oxide (PPO) polymers have good mechanical, electrical, and thermal properties, but they have poor processability owing to their quite high melt viscosity. This hinders the manufacturing processes of fiber-reinforced thermoplastics that have enhanced mechanical and physical properties. Although PPO was modified by [...] Read more.
Polyphenylene oxide (PPO) polymers have good mechanical, electrical, and thermal properties, but they have poor processability owing to their quite high melt viscosity. This hinders the manufacturing processes of fiber-reinforced thermoplastics that have enhanced mechanical and physical properties. Although PPO was modified by blending with polystyrene (PS) or polyamide to improve processability, the modified PPO (mPPO) still had a high melt viscosity compared with other polymers. Thus, the fiber-reinforced mPPO is manufactured by compounding with chopped fiber, while various methods are applied to manufacture the fiber-reinforced polypropylene and polyamide in order to improve properties. One of the methods is a direct fiber feeding method, which can keep the longer fiber length because of a direct and continuous roving yarn feeding without chopping. Therefore, the composite manufactured by the direct fiber feeding method is expected to improve the mechanical properties. Hence, this study aims to investigate the feasibility of a direct fiber feeding extrusion process for manufacturing glass-fiber-reinforced mPPO or GFmPPO. The manufactured GF/mPPO composites exhibited increased tensile and flexural properties as the fiber content increased up to 50 wt% of GF owing to the predominant effects of fiber content. Nevertheless, the larger core area in the cross-section micrograph of the tensile specimen of the GF/mPPO composite with 50 wt% of GF was observed to reduce the fiber efficiency factor for tensile strength. Meanwhile, the impact strength of the GF/mPPO composites decreased with increasing GF content. This is attributed to the insufficient fiber length for the impact strength. As the GF content increased, the glass transition temperature slightly decreased. This result was interpreted as being a result of thermal degradation during the extrusion process to manufacture the GF/mPPO masterbatch. The results of the dynamic mechanical analyses, e.g., storage modulus and tan δ, show the good correlation with the increased flexural modulus, the decreased glass transition temperature, and the impact strength as the GF content increased. Full article
(This article belongs to the Special Issue Trends and Prospects in Fibre Composites)
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