Article
Materials Science, Composites
Jun-Ru Tao, Xiao-Hong Tang, Qian-Ming He, Ming Wang
Summary: This study discusses the effect of surface conductivity on the microwave shielding effectiveness of sandwiched MWCNT/PCL composites. It is found that decreasing surface conductivity leads to a decrease in electromagnetic shielding. Simulation and experimental studies indicate that microwave reflection plays a vital role in the shielding performance. Furthermore, the dielectric properties of the surface layers have little effect on the shielding effectiveness.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Qingsen Gao, Yamin Pan, Guoqiang Zheng, Chuntai Liu, Changyu Shen, Xianhu Liu
Summary: In this study, flexible multilayered MXene/thermoplastic polyurethane films were prepared via a simple layer-by-layer spraying technique, showing excellent EMI shielding effectiveness, high electrical conductivity, and outstanding thermal conductivity. The obtained films also demonstrated excellent heating stability, low voltage requirements, and fast response time, making them potential candidates for various applications including de-icing and thermal stealth performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Engineering, Manufacturing
Feifei Zhang, Jiashun Hu, Peng Zhao, Ping He, Hao-Yang Mi, Zhanhu Guo, Chuntai Liu, Changyu Shen
Summary: A well-designed multilayered composite film was fabricated using vacuum-assisted filtration, featuring alternating thermoplastic polyurethane (TPU) nanofiber membranes and silver nanowire (AgNW) layers. The film exhibited high electromagnetic interference shielding effectiveness (97.3 dB) and excellent photothermal property, as well as great triboelectric energy generation ability.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2021)
Article
Engineering, Manufacturing
Kok Peng Marcian Lee, Thomas Baum, Robert Shanks, Fugen Daver
Summary: The thickness of the sample does not have a large impact on EMI SE, while internal geometric designs can significantly improve it. The electromagnetic response of 3D-printed GC is limited by geometric accuracy and printing methods, particularly in replicating complex geometries.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Composites
Jie He, Mengjie Han, Kai Wen, Chunlei Liu, Wei Zhang, Yaqing Liu, Xiaogang Su, Cunrui Zhang, Chaobo Liang
Summary: A new type of silica/carbon nanotubes/polyimide-silver nanowires/cellulose nanofibers (SiO2/CNTs/PI-AgNWs/CNF) composite material is prepared based on the principle of split conductive modular design. This composite material has unified electromagnetic wave absorption and shielding performance, and autonomous switching function between infrared camouflage and infrared response.
COMPOSITES SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Composites
Yixi Bian, Yongjin Li
Summary: Porous conductive POE elastomeric composites were successfully fabricated with CNTs exclusively located in the PBAT phase. The fully exposed CNTs in the pores significantly increased electromagnetic interference shielding effects and conductivity by 11 orders of magnitude compared to the original ternary nanocomposites. This paves new possibilities for fabricating functional materials for flexible electronics.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Lilu Zhou, Bangli Yang, Tao Xu, Lijun Wang
Summary: This study investigated the cellular structure, properties, and electromagnetic interference (EMI) shielding effectiveness (SE) of foam materials prepared by adding multi-walled carbon nanotubes (MWCNT) and carbon nanofibers (CNF) into epoxy resin (EP). It was found that the foam in the limited-foaming state showed isotropic electrical resistivity, but electrical anisotropy emerged after the second-step foaming. The connection between MWCNT and CNF was destroyed during further foaming, leading to enhanced electrical anisotropy. The addition of CNF improved the EMI shielding effectiveness and increased the electrical anisotropy of the foam materials.
COMPOSITES COMMUNICATIONS
(2022)
Article
Nanoscience & Nanotechnology
Haoran Cheng, Yamin Pan, Qiang Chen, Renchao Che, Guoqiang Zheng, Chuntai Liu, Changyu Shen, Xianhu Liu
Summary: The study prepared ultrathin flexible poly(vinylidene fluoride) (PVDF) composite films with MXenes and silver nanowires (AgNWs) through a solution casting method, showing enhanced electrical and thermal conductivity as well as EMI shielding compared to PVDF/MXene and PVDF/AgNW films. The main EMI shielding mechanism is absorption, and possible synergistic mechanisms for enhancing EMI shielding and mechanical performance are discussed. This work provides a promising solution for EMI shielding challenges in modern smaller wearable devices.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Materials Science, Composites
C. Retailleau, J. Alaa Eddine, F. Ndagijimana, F. Haddad, B. Bayard, B. Sauviac, P. Alcouffe, M. Fumagalli, V. Bounor-Legare, A. Serghei
Summary: The universal relationship between electromagnetic shielding effectiveness and electrical conductivity based on the electrical properties of composite materials has been discovered in this study, regardless of the nature of the conductive material used.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Veronika Tunakova, Maros Tunak
Summary: The development of flexible air/water vapor permeable composites for electromagnetic shielding has attracted increasing attention in recent years. This study investigated the design and properties of carbon-fiber reinforcements for SE protection, achieving good agreement between calculated and experimental results for shield effectiveness.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Manufacturing
Binbin Sun, Shuangjie Sun, Yan Guo, Hao-Yang Mi, Xin Jing, Xiulei Jiang, Binbin Dong, Chuntai Liu, Changyu Shen
Summary: Asymmetric composite foams composed of Fe3O4@rGO/CNT/TPU foams and a silver layer were developed using vacuum-assisted hot-pressing and supercritical carbon dioxide foaming. The foam showed excellent impedance matching and wave attenuation capabilities, achieving -46.8 dB reflection loss. With the reflective silver layer, the foam achieved a total shielding effectiveness of 89.2-103.5 dB and a reflection shielding effectiveness of 0.24-0.83 dB. This work provides new insights into the design of high-efficiency shielding materials for cutting-edge EMI shielding applications.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Chemistry, Physical
Haizhou Liu, Ying Xu, Xiaodong Zhao, Dong Han, Fei Zhao, Qiaowen Yang
Summary: This article introduces a novel lightweight foam material (CGF) composed of carbon nanotubes (CNTs) and reduced graphene oxide (rGO) for electromagnetic interference (EMI) shielding. The addition of 20 wt% CNTs expands the conductive network and increases the conductivity of the CGF material by 274.4%. The CGF material exhibits excellent EMI shielding effectiveness (SE) of 71.4 dB at a low mass per unit area of 12.5 mg·cm(-2). The CGF material also shows high comprehensive performance in terms of SE divided by density (SED) and mass per unit area (SEMA) values.
Article
Engineering, Manufacturing
Ye Wang, Qian-Ming He, Ya-Nan Gao, Tian-Ning Yue, Ming Wang
Summary: In this study, a small amount of conductive copper micro-particles were added to multi-walled carbon nanotube/polydimethylsiloxane composites to enhance their electromagnetic wave shielding performance. The addition of copper micro-particles increased the propagation paths of electromagnetic waves inside the composites, resulting in a remarkable improvement in electromagnetic wave shielding. The diameter and content of the copper micro-particles were investigated, and the shielding mechanism of the composites was simulated and verified by electromagnetic simulation. The composites exhibited an absorption-type shielding mechanism with low reflection loss and reflectivity coefficient.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2022)
Review
Nanoscience & Nanotechnology
Chaobo Liang, Zhoujie Gu, Yali Zhang, Zhonglei Ma, Hua Qiu, Junwei Gu
Summary: With the widespread application of electronic communication technology, the concern for electromagnetic radiation pollution has increased. Metal matrix EMI shielding materials have issues, while polymer matrix EMI shielding composites have natural advantages but need to improve performance.
NANO-MICRO LETTERS
(2021)
Article
Engineering, Manufacturing
Qiang Gao, Yu Zhang, Shuai Zhang, Yan Ma, Xianzhe Sheng, Linhao Hui, Zhiwei Wang, Shuhuan Yun, Jianbin Qin, Guangcheng Zhang
Summary: In this study, a composite foam comprising epoxy (EP), reduced graphene oxide (rGO), and nickel chains (Ni) was prepared through a strategy that combined hierarchical structured aerogel skeleton and supercritical carbon dioxide (scCO2) foaming process. The foam exhibited a brick-and-mortar structure and achieved outstanding electromagnetic interference (EMI) shielding efficiency of 41.11 dB in X-band, thanks to the construction of a rGO/Ni bicontinuous conductive skeleton and microcellular structure. The use of liquid epoxy as matrix allowed for good processability and excellent compressive strength (27.33 MPa) of the foam with a density of 0.88 g/cm3, making it a valuable high-performance EMI shielding material.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
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)