Article
Nanoscience & Nanotechnology
Guolong Sang, Chao Wang, Yi Zhao, Ge He, Qifan Zhang, Minghao Yang, Shihui Zhao, Pei Xu, Xiaoqing Xi, Jinlong Yang
Summary: The study successfully prepared nickel@multiwalled carbon nanotubes/alumina (Ni@CNTs/Al2O3) ceramic composites with segregated structures and electric/magnetic-coupling networks, which effectively capture and attenuate electromagnetic wave energy and enhance fracture toughness synergistically. High-performance ceramic composites have been achieved with promising EMI shielding capabilities and high mechanical properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Polymer Science
Feng Tang, Seok-Ju Kim, Tae-Gyeong Eom, Minyoung Seo, Young-Gi Song, Jin-Hyeok Park, Young Gyu Jeong
Summary: The impacts of polyketone-grafted multiwalled carbon nanotube (CNT-g-PK) on the thermal, mechanical, electrical, and electromagnetic interference (EMI) shielding performance of polyketone (PK) composites are reported. PK/CNT-g-PK composites with varying CNT amounts were fabricated through reactive melt-compounding and exhibited enhanced properties.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Materials Science, Composites
Prakhar Dubey, Madhur Gupta, S. I. Kundalwal
Summary: This study presents a comprehensive numerical investigation on the electromagnetic interference (EMI) shielding capabilities of a conductive polymer nanocomposite incorporated with carbon nanotubes (CPNC) in the X-band. The results show that the EMI shielding effectiveness (SE) of CPNC can be improved by adjusting the weight percent (wt%) of carbon nanotubes (CNTs), the thickness, and the shape of the shielding material. The study highlights the exceptional absorption capabilities and lightweight nature of CPNC, making it a promising shielding material for aerospace and satellite communication applications.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Multidisciplinary
S. Moazen, S. Sahebian, M. Haddad-Sabzevar
Summary: In this study, three different types of nanocomposites with varying distribution of carbon nanotubes in High Density Polyethylene matrix were fabricated using hot compaction method. The segregated structure showed the formation of carbon nanotubes conductive network at the polymer granule interfaces, while semi-segregated samples only showed partial segregation. Electrical conductivity and Shielding Effectiveness were significantly higher in segregated structure samples compared to semi-segregated and random structure nanocomposites.
Article
Biochemistry & Molecular Biology
Xiaofan Ma, Xiaoshuai Han, Jiapeng Hu, Weisen Yang, Jingquan Han, Zhichao Lou, Chunmei Zhang, Shaohua Jiang
Summary: With the increasing pollution of electromagnetic radiation, the development of low-cost, renewable electromagnetic interference (EMI) shielding materials is necessary. Wood-derived carbon (WC) materials for EMI shielding are prepared by one-step carbonization of renewable wood. The conductivity and EMI performance of WC increase with the increase in carbonization temperature. WC with higher density has better conductivity and higher EMI performance. The microstructure of WC influences its EMI shielding properties, and the specific EMI shielding effectiveness (SSE/t) value can be calculated to optimize tree species. WC EMI material also has good hydrophobicity, heat insulation properties, and mechanical properties.
Article
Materials Science, Composites
Yilong Li, Danyang Song, Quanpeng Chen, Yujie Liu, Yanjun Zheng, Cong Nie, Yunchao Jia, Hongjuan Zheng, Fengchun Wei
Summary: Conductive polymer composites with high performance require a conductive network built by a less conductive filler. In this study, porous ultrahigh molecular weight polyethylene (UHMWPE)/poly(vinylidene fluoride) (PVDF) blends filled with multi-walled carbon nanotubes (MWCNT) were fabricated using sacrificial templating. The porous composites showed better electromagnetic interference shielding effectiveness (EMI SE) due to the well-dispersed and densely packed MWCNT network formed around the polymer particles.
POLYMER COMPOSITES
(2023)
Article
Nanoscience & Nanotechnology
Shunxi Song, Linghao Li, Dexian Ji, Junfan Zhao, Qi Wu, Qianyu Wang
Summary: In the field of electromagnetic shielding, manufacturing thinner and better-performing EMI shielding materials has become an important trend. This study prepared a composite paper with a rebar-concrete layered structure that consists of basalt fibers (BF), aramid nanofibers (ANFs), and multiwalled carbon nanotubes (CNT) through a vacuum-assisted filtration approach. The composite paper exhibited high electrical conductivity, electromagnetic interference shielding efficiency, and specific shielding efficiency, as well as excellent thermal stability and performance in extreme environments. Based on these properties, the composite paper shows tremendous potential for practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Jinwoo Lee, Sungyong Hong, Yan Sun, Stephanie K. Lee, Uiseok Hwang, Jae-do Nam, Jonghwan Suhr
Summary: In this study, a manufacturing approach for synthesizing segregated conductive polymer composites (s-CPCs) was investigated. The approach involved introducing parasitic reaction of MXene flakes into positively charged polycarbonate microspheres prepared by a cationic surfactant. The resulting s-CPCs exhibited a low percolation threshold of 0.15 vol% and outstanding EMI shielding performance of 38.7 ± 1.2 dB with only 2.75 vol% of MXene. This study demonstrates the great potential of s-CPCs in various EMI shielding applications if properly optimized.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Gaojie Han, Zhiguo Ma, Bing Zhou, Chengen He, Bo Wang, Yuezhan Feng, Jianmin Ma, Lin Sun, Chuntai Liu
Summary: A flexible and ultrathin CNF/TRGO@Ni film with enhanced electrical conductivity and EMI shielding effectiveness has been successfully fabricated in this study. The film maintains only a 7.5% decline in electrical conductivity and EMI SE after being bent 1000 cycles due to its excellent mechanical flexibility. The EMI shielding mechanism is attributed to the combination of enhancing impedance mismatch, multireflection in brick-mortar lamellar structure, and endowing synergetic loss by graphene and Ni nanoparticles.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Chen Fu, Zhizhi Sheng, Xuetong Zhang
Summary: In this study, a free-standing carbon nanotube (CNT)-based aerogel film with a laminated porous structure and high electrical conductivity was prepared using a laminated structural engineering strategy. The film showed a large specific surface area and the highest specific shielding effectiveness among reported aerogel-based materials. It also exhibited exceptional Joule heating performance, making it suitable for lightweight applications such as EMI shielding and wearable heating.
Article
Construction & Building Technology
Siamak Imanian Ghazanlou, Siavash Imanian Ghazanlou, Sroush Imanian Ghazanlou, Hamid Karimi, Neda Azimi, Saman Hosseinpour
Summary: This research study focuses on developing a multifunctional cement nanocomposite by incorporating reduced graphene oxide (rGO) nanosheets. A core-shell structure of rGO@Fe3O4 (rGO@F) was used to overcome the challenges of rGO dispersion. The addition of rGO@F significantly improved the mechanical properties, electrical and thermal conductivity, chemical properties, crack inhibition, and electromagnetic wave absorption of the cement composite.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Physical
Wenbo Zhang, Linfeng Wei, Zhonglei Ma, Qianqian Fan, Jianzhong Ma
Summary: Conductive polymer composites are promising EMI shielding materials, with carbon materials playing a crucial role in their performance. Waterborne polymer/carbon material composites have been shown to meet the demand for EMI shielding effectively and significantly affect the electromagnetic interference performance.
Article
Chemistry, Multidisciplinary
Ge Zhu, Laura Giraldo Isaza, Bai Huang, Alain Dufresne
Summary: Aerogels made from nano-cellulose and carbon nanotubes have been developed as a promising solution for shielding electromagnetic interference, with characteristics such as lightweight, highly porous, conductive, mechanically resistant properties. The aerogels show great potential to be used as green and lightweight shielding elements against electromagnetic radiation, given their density below 0.075 g/cm(3), porosity over 95.47%, conductivity up to 26.2 S/m.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Shufang Zheng, Yuyin Wang, Yifan Zhu, Chenxiao Zheng
Summary: Constructing three-dimensional segregated carbon-based nanofiller networks in the polymer matrix enhances the electrical and thermal conductivities of polymer composites. This review summarizes strategies for constructing segregated networks using various forms of carbon-based nanofillers and polymers, including 3D porous foam, particles/powders, fibers/fabrics, and aqueous latex. The review also discusses the influence of segregated networks on multifunctional performances and internal mechanisms, and analyzes current issues and future prospects.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Materials Science, Composites
Wenhao Wang, Zhanyu Zhai, Jinglin Liu, Yilei Wang, Zhonghao Yang
Summary: This study investigates the use of nickel electroplated carbon fiber fabric to enhance the EMI shielding capability of carbon fiber reinforced thermoplastics. The results show that the nickel electroplating improves the mechanical properties and shielding efficiency of the composites.
POLYMER COMPOSITES
(2023)
Article
Materials Science, Ceramics
Boran Zhang, Fuqiang Ren, Chao Wang, Jingjing Liu, Yi Zhao, Ge He, Jinlong Yang
Summary: This research demonstrates the construction of ceramic foam-based filters using diatomite and kaolin powder as starting materials. The resulting products show a hierarchical pore structure with multiple well-controlled micron-sized window pores, exhibiting high removal efficiency.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Chao Wang, Yedong Rong, Boran Zhang, Jinlong Yang
Summary: In this study, Al2O3-hollow glass sphere foam ceramics were successfully fabricated using a particle-stabilized foaming method, showing high porosity and low thermal conductivity, reaching superinsulating material level. The compressive strength of the foam ceramics is acceptable, and the deviation between theoretical and experimental values is mainly due to the hierarchical microstructure of the foams. This work may deepen understanding of the particle-stabilized foaming technique and pave new ways for fabricating superior thermal-insulating ceramic materials.
Article
Chemistry, Multidisciplinary
Chao Wang, Guolong Sang, Minghao Yang, Ge He, Yedong Rong, Jinlong Yang
Summary: Interpolymer interactions play a crucial role in determining the microstructure and properties of polymer aerogels. The study investigated the microstructure of PVA-based aerogels and their interactions with other polymers such as PEO, PAA, and CM-CTS. Different types of aerogels exhibited distinct microstructures based on the strength of interactions between polymer chains, influencing properties like compressive strength and porosity.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Minghao Yang, YouFei Zhang, Chao Wang, YongJiao Li, Ge He, GuoLong Sang, FengYi Lan, Zun Xia, XiaoQing Xi, Xiuhui Wang, JinLong Yang
Summary: The growth of SiC nanowires is crucial for determining their microstructure and properties. This article proposes a novel approach to control the microstructure of SiCNWs by adjusting the growth space and atmosphere. The influence of microstructure on the dielectric and absorption properties of nanowires is studied, and the results show favorable electromagnetic absorption performance.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chao Wang, Youfei Zhang, Boran Zhang, Jinlong Yang
Summary: This research develops a method for fabricating foam ceramics using nanoparticles (NPs) with the Pickering system. By adjusting the interfacial chemistry and capillary forces, the foam ceramics show reduced linear shrinkages and tunable pore structures. These materials exhibit high thermal insulating properties, mechanical strength, and stability, making them suitable for various applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chao Wang, Guolong Sang, Yedong Rong, Boran Zhang, Yi Zhao, Jinlong Yang
Summary: The study developed a one-step strategy to fabricate raspberry-like hollow periodic mesoporous organosilica (RHPMO) with tunable surface structures and high specific surface area. This preparation method unexpectedly shares a similar protocol as the classical one for making spherical PMO. The dynamic formation process of RHPMO was detected by TEM, showing that controlling condensation and adsorption of precursor/surfactant assemblies is crucial for forming the final nanoparticles.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Guolong Sang, Chao Wang, Yi Zhao, Ge He, Qifan Zhang, Minghao Yang, Shihui Zhao, Pei Xu, Xiaoqing Xi, Jinlong Yang
Summary: The study successfully prepared nickel@multiwalled carbon nanotubes/alumina (Ni@CNTs/Al2O3) ceramic composites with segregated structures and electric/magnetic-coupling networks, which effectively capture and attenuate electromagnetic wave energy and enhance fracture toughness synergistically. High-performance ceramic composites have been achieved with promising EMI shielding capabilities and high mechanical properties.
ACS APPLIED MATERIALS & INTERFACES
(2022)
