Article
Construction & Building Technology
Bing Liu, Xuanyu Zhang, Junpeng Ye, Xiaoyan Liu, Zhiheng Deng
Summary: This study investigated the effect of microfibers and macrofibers on the mechanical properties of coral concrete. The results showed that both types of fibers can improve the mechanical properties, with microfibers mainly affecting the stage before macrocracks formation and macrofibers mainly exerting positive effects after macrocracks appeared. The hybrid addition of microfibers and macrofibers further enhanced the mechanical properties.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Engineering, Manufacturing
Joseph C. Janicki, Dilpreet S. Bajwa, Douglas Cairns, Roberta Amendola, Cecily Ryan, Alexey Dynkin
Summary: Continuous carbon fibers are premium reinforcing materials for aerospace composites, but the challenge lies in forming deep drawn parts. Stretch broken carbon fiber (SBCF) has been proposed as an alternative, showing decreased tensile loads at elevated temperatures compared to continuous fibers. The load bearing capacity of heated SBCF tow is linked to fiber continuity, suggesting superior forming properties compared to continuous fiber tow.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Chemistry, Physical
Kunjie Wu, Bin Wang, Yutao Niu, Wenjing Wang, Cao Wu, Tao Zhou, Li Chen, Xianghe Zhan, Ziyao Wan, Shan Wang, Zhengpeng Yang, Yichi Zhang, Liwen Zhang, Yongyi Zhang, Zhenzhong Yong, Muqiang Jian, Qingwen Li
Summary: By using chlorosulfonic acid-assisted wet stretching and mechanical rolling, high alignment and dense packing of carbon nanotube fibers (CNTFs) were achieved, resulting in significant enhancement of mechanical and electrical properties.
Article
Engineering, Multidisciplinary
Toshihira Irisawa, Reika Aratake, Miho Hanai, Yoshiki Sugimoto, Yasuhiro Tanabe
Summary: The study investigated the optimal conditions for recovering recycled carbon fiber from epoxy matrix CFRP through thermal decomposition, emphasizing the need for an oxidizing atmosphere and the impact of treatment temperature and time on fiber damage. It was found that the strength reduction of the recovered carbon fiber was influenced not only by thermal oxidative decomposition, but also by its interaction with the resin, with recovery time depending on treatment temperature and the location of the fiber in CFRP.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Donghoon Kang, Jeong-Moo Lee, Chorok Moon, Hyung-Il Kim
Summary: The combination of long glass fiber-reinforced composite and recycled composites significantly altered the length distribution of glass fibers, resulting in a significant recovery of mechanical properties of the recycled composites. The mixing ratio, number of recycles, and distribution of glass fiber length all have an impact on the mechanical properties of the composites.
POLYMER COMPOSITES
(2021)
Article
Materials Science, Multidisciplinary
Xi Yang, Yindong Wang, Xiaokang Zhang, Zhiwen Jian, Xili Lu, Zhanhua Wang, Hesheng Xia
Summary: In this study, acylsemicarbazide (ASC) moieties are introduced into a network to obtain a dynamic reversible cross-linked thermoset epoxy resin. The optimized epoxy resin shows excellent reprocessing performance and can be used to prepare carbon fiber reinforced polymer composites. The study provides a solution for recycling carbon fiber composites in line with a circular economy.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Matteo Sambucci, Marco Valente, Seyed Mostafa Nouri, Mehdi Chougan, Seyed Hamidreza Ghaffar
Summary: This study focuses on the development of cementitious mortars using secondary waste carbon fibers and addresses the challenge of achieving adequate dispersion of these recycled fibers within the matrix by employing nanoclay conditioning. The results show that nanoclay-conditioned waste carbon fibers significantly increase the flexural and compression strength performance of the mortar, as well as improve its microstructural characteristics. However, further investigation is needed to address challenges related to impact resistance and durability properties of these cementitious composites.
Article
Polymer Science
Chengsen Li, Xueping Gao, Bo Zhu, Xiaomin Yuan, Zhijie Qiu, Ye Zhang, Shuhan Yan
Summary: The N-(4-hydroxyphenyl) maleimide (4-HPM) modified waterborne polyurethane emulsions (MWPU) were used as surface sizing agents to improve the interfacial adhesion between carbon fibers (CF) and epoxy resin matrix. The modified MWPU showed good particle size distribution, storage stability, and thermal stability. The surface reactivity of CF increased significantly after sizing. The interfacial shear strength (IFSS) and the interlaminar shear strength (ILSS) of CFREs were greatly improved by the MWPU emulsion, especially when the 4-HPM content was 1.0 wt%.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Maohua Li, Zulfiqar Ali, Xianzhe Wei, Linhong Li, Guichen Song, Xiao Hou, Hainam Do, James C. Greer, Zhongbin Pan, Cheng-Te Lin, Nan Jiang, Jinhong Yu
Summary: Polymer composites with high thermal conductivity, achieved by aligning carbon fibers under stress, have been developed. These composites exhibit a thermal conductivity as high as 32.6 W m(-1) K-1. Comparison of carbon fiber alignment conditions in different composites was conducted using micro compute tomography and scanning electron microscopy.
COMPOSITES PART B-ENGINEERING
(2021)
Review
Construction & Building Technology
Yan Wang, AoYang Li, ShaoHui Zhang, BingBing Guo, DiTao Niu
Summary: Carbon fiber composites (CFCs) are widely used in modern industry for their excellent properties. However, a large amount of CFCs waste is being produced due to technological limitations. Efficiently recycling and reusing CFCs is a common problem that needs to be addressed.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Victor Hevilla, Agueda Sonseca, Enrique Gimenez, Coro Echeverria, Alexandra Munoz-Bonilla, Marta Fernandez-Garcia
Summary: This report presents the synthesis of low-molecular weight biobased poly(mannitol sebacate) (PMS) and its functionalization with acrylate groups (PMSAc), followed by the preparation of aligned fibers by blending these polyesters with poly(lactic acid) (PLA) and electrospinning. The addition of PMS slightly affected the fiber diameter and alignment, and also resulted in modifications to the crystallinity and thermal properties of the blend. Notably, the incorporation of PMS led to improved ductility of the fibers, with higher elongation at break and tensile strengths, and a smaller Young modulus compared to PLA fibers. The acrylated PMS offered additional functional groups at the surface for further chemical reactions.
Article
Construction & Building Technology
Huanghuang Huang, Le Teng, Kamal H. Khayat, Xiaojian Gao, Fazhou Wang, Zhichao Liu
Summary: This paper investigates the influence of carbon nanotube (CNT) and graphite nanoplatelet (GNP) on the microstructure and mechanical characteristics of UHPC with steel fiber alignment. The results show that the addition of CNT and GNP can significantly improve the compressive strength, flexural strength, and dissipated energy of UHPC. Fiber alignment further enhances the flexural strength and dissipated energy of UHPC. Moreover, CNT and GNP enhance cement hydration and enable crack bridging at the nanoscale or microscale, reducing the porosities and improving the mechanical properties of UHPC.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Materials Science, Coatings & Films
Racim Radjef, Karyn L. Jarvis, Bronwyn L. Fox, Sally L. McArthur
Summary: The study demonstrates that dry plasma treatment, such as air plasma treatment, can be used as a surface modification process for carbon fibers, significantly impacting fiber-matrix adhesion. It suggests that dry plasma treatment could replace current wet processing, reducing costs and environmental impact.
SURFACE & COATINGS TECHNOLOGY
(2021)
Review
Polymer Science
Andrzej K. Bledzki, Holger Seidlitz, Krzysztof Goracy, Magdalena Urbaniak, Janina J. Roesch
Summary: The paper discusses the current international production volume and global market of carbon fiber reinforced polymer composites and potential development trends. It also presents examples of effective recycling methods for these composites, as well as legally binding legislation in the EU on polymer composite recycling.
Article
Polymer Science
Goekhan Bakis, Jan-Felix Wendel, Rico Zeiler, Alper Aksit, Markus Haublein, Martin Demleitner, Jan Benra, Stefan Forero, Walter Schuetz, Volker Altstaedt
Summary: The research focuses on the effect of plasma treatment on the surface of carbon nanotubes and aerospace grade epoxy resin composites. It was found that plasma treatment improves the dispersion of carbon nanotubes in the resin and enhances the resistance of the epoxy resin to crack propagation.
Article
Engineering, Manufacturing
Wenwu Zhang, Helezi Zhou, Bin Huang, Huamin Zhou, Xiongqi Peng
Summary: This paper investigates the tool-ply friction behavior of jute/PLA biocomposites in thermoforming. A pull-through friction testing device was developed to characterize the tool-ply friction behavior of jute/PLA prepreg at elevated temperature. The effects of alkali treatment, fiber orientation, normal force, and slipping velocity were studied, and a quantitative definition of tool-ply friction behavior was achieved. The results indicate a strong relationship between tool-ply friction behavior and woven and fiber structures, indicating hydrodynamic lubrication.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Stephen Clay, Wesley Ault, Alex Faupel, Caglar Oskay, Philip Knoth, Noam N. Y. Shemesh, Rami Haj-Ali, Uri Breiman, Ido Meshi, Ofir Shor
Summary: This paper presents an experimental investigation on the compression failure mechanisms of laminated carbon fiber reinforced composites under non-standard quasi-static loading. The results demonstrate the presence of interior kink bands, surface ply splitting, and delaminations, with each failure mechanism associated with different stress levels.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Bowen Zeng, Jinlong Yang, Zhi Ni, Yucheng Fan, Ziyan Hang, Chuang Feng
Summary: This study successfully improved the pyroelectric properties of PVDF films by preparing functionally graded graphene nanoplatelet (FG-GNP) reinforced PVDF composite films. The increase in the number of layers and the concentration of GNP near the surface of the composite film were found to enhance the pyroelectric properties and temperature stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Shenghe Zhang, Fukai Chu, Weizhao Hu, Bibo Wang, Richard K. K. Yuen, Yuan Hu
Summary: This study improves the flame retardancy and mechanical properties of PBAT by synthesizing a phosphorus-containing intercalator and mixing it into the PBAT matrix.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Tharan Gordon, Michael R. Wisnom, Byung Chul Kim
Summary: Thickness tapering is a common strategy for efficient and lightweight composite structures, but it can introduce delamination sites. This study investigated the use of ply scarfing method to improve the compressive failure stress of tapered laminates made from thick unidirectional non-crimp fabrics. The results showed that ply scarfing suppressed delamination and increased the failure stress by 60%.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Xin Wang, Yiting Qu, Junlei Bai, Fujun Xu, Bin Ding, Xiaohua Zhang
Summary: A solution-based strategy is proposed to achieve a strong bond between fibers and matrix in powder materials, resulting in improved mechanical properties, thermal conductivity, and fracture strain of the composites. The method also offers advantages such as enhanced powder flowability and thermal stability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Xing Zhou, Guosheng Wang, Dexiang Li, Qi Wang, Keming Zhu, Yaya Hao, Yueyang Xu, Neng Li
Summary: This study successfully synthesized polyurethane elastomer by using degraded products from waste PET, and fabricated composites with carbon nanotubes for strain sensors. The composites showed good mechanical and durability performance, indicating a potential method for recycling waste PET into valuable and functional materials.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Fei Peng, Tingting Shan, Rongrui Chen, Jiulong Shi, Di Liu, Guoqiang Zheng, Chaojun Gao, Kun Dai, Chuntai Liu, Changyu Shen
Summary: Janus polymer films with distinct surface performance and potential applications were successfully prepared by vacuum-assisted hot-compressing method and spray coating. These films exhibit decent actuation performance and rapid selfpowered sensing property, and can be used for real-time acetone monitoring system.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Biao Cheng, Huafeng Quan, Yuefeng Zhang, Dong Huang, Tongqi Li, Chong Ye, Xingming Zhou, Zhen Fan, Yafang Zhang, Ting Ouyang, Fei Han, Hongbo Liu, Jinshui Liu
Summary: In this study, a binary graphite network was constructed to improve the thermal conductivity and control the formation of micrometer-scale open pores in phase change composites. The developed composites showed a high thermal conductivity and phase change enthalpy, making them promising for thermal control in space optical-mechanical systems and other critical aerospace components.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Shihao Zuo, Fei Cheng, Guangming Yang, Jiangzhou Li, Yongjun Deng, Guangjun Gou, Xuejun Cui, Yunsen Hu, Xiaozhi Hu
Summary: Micro-arc oxidation (MAO) treatment was used to modify aluminum (Al) alloys in order to improve bond strength with carbon fiber reinforced polymer (CFRP). The treatment successfully created a porous surface with better hardness, roughness, and wetting, and introduced resin pre-coating (RPC) and carbon nanotube (CNT) fiber bridging to improve the bonding interface. The combined treatments significantly increased the bond strength by up to 156.1%, indicating the feasibility of MAO as an alternative method for manufacturing high-performance Al-CFRP composites in industrial production.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
James Kratz, Christophe Paris, Karolina Gaska, Vincent Maes, Ivana Partridge, Philippe Olivier
Summary: Faster heating rates and higher process temperatures can reduce the total process time while achieving the same degree-of-cure. Thermal analysis shows that thermoplastic interleaf particles melt at the recommended curing temperature. A short dwell at a lower temperature can prevent the mixing of thermoplastic particles and thermoset pre-polymer.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Thomas Maierhofer, Evripides G. Loukaides, Craig Carr, Chiara Bisagni, Richard Butler
Summary: Joining thermoset composites via resistance welding provides an efficient method for aerospace structures with benefits such as high-volume manufacturing and simplified surface preparation. The influence of welding parameters on joint performance is assessed using Mode I fracture toughness testing. A Bayesian approach is employed to select high-performance parameters.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Jiangan You, Ling Cai, Ronghua Yu, Haiping Xing, Jian Xue, Ying Li, Zhiwei Jiang, Dongmei Cui, Tao Tang
Summary: In response to the global environmental pollution crisis caused by waste plastics, recyclable design is an effective solution. A CPVC/PUA nanocomposite foam was developed using the plasticizing-foaming-reinforcing strategy, combined with catalytic carbonization. The foam exhibited high expansion ratio, robustness, solvent resistance, flame-triggered shape memory effect, and ablation resistance. The foam could be directly upcycled into functional carbon foam with attractive electromagnetic interference shielding performance.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Siyao Chen, Zhiyu Chen, Yangling Ou, Junwei Lyu, Junning Li, Xiangyang Liu, Yang Liu
Summary: In this study, we demonstrated the significant effect of composite interface on temperature increase in electrical heaters. By selectively fluorinating the outer walls of carbon nanotubes and compositing them with cellulose nanofibers, improved interfacial phonon diffusion was achieved, leading to a higher temperature increase rate.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)
Article
Engineering, Manufacturing
Yanjun He, Agnieszka Suliga, Alex Brinkmeyer, Mark Schenk, Ian Hamerton
Summary: A new thermoset resin system based on a polybenzoxazine blend showed good performance under high ATOX irradiation. It reduced erosion yield by forming a silicon-rich surface layer and improved the mechanical properties of CFRP laminates.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2024)