Article
Polymer Science
Jose Antonio Butenegro, Mohsen Bahrami, Yentl Swolfs, Jan Ivens, Miguel Angel Martinez, Juana Abenojar
Summary: The study focused on the fiber distribution and mechanical, dynamic, and thermomechanical properties of composites manufactured using hot pressing. The viability of recycling and reuse route for preventing the deterioration of carbon fibers by employing polyamides and mechanically recycled carbon fiber-reinforced polymers as reinforcement was illustrated.
Article
Engineering, Environmental
Frida Hermansson, Sara Heimersson, Matty Janssen, Magdalena Svanstrom
Summary: The study indicates that by combining different development routes such as using bio-based raw materials, microwave technology, and recycling of composites with recovery of fibers, carbon fiber composites may have a lower environmental impact than fiberglass composites in the future.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Construction & Building Technology
Gessica Zila Batista dos Santos, Lucas Rosse Caldas, Joao de Almeida Melo Filho, Nathalie Barbosa Reis Monteiro, Sandra Isabel Moreira Rafael, Neliton Marques da Silva
Summary: The use of residues and renewable materials are important strategies for more sustainable production. This study evaluated and compared the environmental performance of two sisal fiber composites using life cycle assessment (LCA). The results showed that the composite with the Portland cement matrix had less environmental impact compared to the geopolymeric composite.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Environmental
Pandeng Li, Cheng Hao, Huihui Wang, Tian He, Tong Shu, Cong Li, Longjiang Yu, Ning Yan
Summary: This study developed a high-performance ramie yarn-reinforced polyimine vitrimer composite (RY-PI) that can be chemically and physically recycled, with excellent mechanical and plasticity properties. RY-PI has high tensile strength and can replace most natural fiber-reinforced plastic composites available in the market. It is also lightweight, solvent-resistant, and moisture-proof. This material has high recyclability and promising potential as an environmentally-friendly alternative.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Zhixiong Huang, Zongyi Deng, Chuang Dong, Jiamin Fan, Yilin Ren
Summary: This paper proposes a solvothermal method to degrade carbon fiber reinforced vinyl ester resin composite (CF/VER), achieving a degradation ratio of up to 99.96%. The study also explores the reuse of degradation products and recycled carbon fibers (RFs), demonstrating their potential for applications in epoxy resin composites with superior mechanical strength.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Construction & Building Technology
Zhexin Hao, Cong Lu
Summary: This study presents a general and user-friendly method for fiber identification in fiber-reinforced cementitious composites (FRCC) using deep learning, which achieves accurate semantic segmentation of fibers with an ordinary camera. The study also analyzes the effect of pore interference and visualizes and discusses the extracted features. A case study on fiber distribution and orientation using the proposed method shows new advances in modeling simplicity, result accuracy and intuitiveness, and user experience.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Essam Shehab, Arshyn Meiirbekov, Akniyet Amantayeva, Aidar Suleimen, Serik Tokbolat, Shoaib Sarfraz
Summary: This study proposed a novel knowledge-based system for cost modeling of recycling CFRP, which does not require in-depth knowledge from users. The system can select appropriate recycling techniques based on user needs with the help of an optimization module using the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS). Various factors such as different material types in different industries, transportation, and dismantling costs were taken into consideration in estimating recycling costs.
Review
Polymer Science
Jie Wu, Xing Gao, Yueting Wu, Yutong Wang, Tat Thang Nguyen, Minghui Guo
Summary: Driven by environmental and economic factors, there is a growing need to efficiently and sustainably recycle carbon fibers (rCFs) from carbon fiber-reinforced polymer (CFRP) wastes and reuse them in valuable applications. This review summarizes the latest progress in CFRP waste recycling methods (mechanical, chemical, and thermal), discusses their advantages and disadvantages, influence parameters, environmental effects, and their impact on the mechanical and surface chemical properties of rCFs. The review also highlights the possibility and potential value of reusing recovered fibers for developing recyclable photocatalytic products, a new way of reuse often overlooked in the CF field.
Article
Engineering, Multidisciplinary
Arslan Akbar, K. M. Liew
Summary: This study evaluated and compared the performance of different fiber reinforced cement composites, with recycled carbon fiber reinforced cement composite showing the highest flexural strength, lowest environmental impact, and minimum production cost. Based on the performance score, the FRCCs were ranked as follows: M-rCF > M-PPF > M-BF > M-GF > M-PVAF > M-vCF.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Polymer Science
Essam Shehab, Arshyn Meiirbekov, Akniyet Amantayeva, Serik Tokbolat
Summary: Fiber-reinforced composites, such as carbon and glass fibers, are widely used due to their superior properties compared to traditional materials. Recycling methods, including mechanical, thermal, and chemical recycling, have been developed in response to environmental regulations. However, these methods face challenges such as material heterogeneity, recycled product quality, high recycling costs, and a lack of market. This paper reviews the cost modeling techniques for composites recycling and identifies research gaps for future directions.
Article
Polymer Science
Alexander Lopez-Urionabarrenechea, Naia Gastelu, Alberto Jimenez-Suarez, Silvia G. Prolongo, Adriana Serras-Malillos, Esther Acha, Blanca Maria Caballero
Summary: This paper introduces a process for recovering carbon fibers and hydrogen simultaneously from an epoxy-carbon fiber composite through a two-stage thermal treatment. The recovered carbon fiber fabrics retain a significant amount of their mechanical properties and a gaseous stream with a high hydrogen content can be obtained.
Article
Materials Science, Multidisciplinary
Luxia Yu, Zepeng Lei, Xiaohao Sun, Peiran Ding, Aaron Wesche, Yinghua Jin, Wei Zhang, Rong Long
Summary: Polyimine is a covalent adaptable network with dynamic imine bonds, suitable for recycling, reprocessing, and repair. Through a powder-based compression molding method, carbon fiber-reinforced polyimine composites can be rapidly fabricated with mechanical properties similar to those produced through traditional methods. Additionally, in situ, mold-free repair of polyimine composites at low temperature and pressure was demonstrated, showcasing the malleability, weldability, and full recyclability of the material.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Mladen Bosnjakovic, Mato Galovic, Jasmin Kupresak, Tomislav Bosnjakovic
Summary: The handling of photovoltaic waste is a significant issue as the amount of waste generated continues to increase. Recycling is the best option, but there are limited recycling plants for PV modules in Europe and none in the Balkan countries. Most PV modules in these countries are disposed of in landfills. This problem needs to be addressed seriously.
Review
Chemistry, Physical
Dragana Borjan, Zeljko Knez, Masa Knez
Summary: Carbon fiber-reinforced composites offer a promising alternative to various materials, but the increase in production has led to a rise in waste materials. As legislation may prohibit landfill and incineration, recycling has become an urgent issue to address. Chemical recycling using sub- and supercritical fluids is seen as an efficient method, while traditional recycling technologies also have their pros and cons.
Article
Automation & Control Systems
Huanbo Cheng, Lijun Guo, Zhengchun Qian, Rui Sun, Jie Zhang
Summary: The study investigates the application of recycled carbon fiber (RCF) in fused deposition modeling (FDM), enhancing the reuse value of carbon fiber and improving the performance of FDM products. Results show that RCF obtained under specific conditions has a 8% higher monofilament tensile strength compared to original carbon fiber (OCF), while the tensile strength of OCF/PLA and RCF/PLA composites is reduced by 25% and 12.5% respectively. The mechanical properties of the composites are influenced by factors such as the chemical bonding between RCF and the resin matrix, and the process parameters in FDM.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
