ACS Applied Materials & Interfaces
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2023
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IF 9.5
Chuanyin Xiong,Tianxu Wang,Yongkang Zhang,Chao Duan,Zhao Zhang,Qiusheng Zhou,Qing Xiong,Mengjie Zhao,Bo Wang,Yonghao Ni
With the continuous improvement of living standards and advancements in science and technology, composite materials with multiple functionalities are gaining high practical value in modern society. In this paper, we present a multifunctional conductive paper-based composite with electromagnetic (EMI) shielding, sensing, Joule heating, and antimicrobial properties. The composite is prepared by growing metallic silver nanoparticles inside the cellulose paper (CP) modified with polydopamine (PDA). The resulting CP@PDA@Ag (CPPA) composite has high conductivity and EMI shielding properties. Furthermore, CPPA composites demonstrate exceptional sensing, Joule heating, and antimicrobial properties. In addition, Vitrimer, a polymer with excellent cross-linked network structure, is introduced into CPPA composites to obtain CPPA-V intelligent electromagnetic shielding materials with shape memory function. These excellent properties show that the prepared multifunctional intelligent composite has exceptional EMI shielding, sensing, Joule heating, and antibacterial and shape memory properties. In short, this multifunctional intelligent composite material has great application prospects in flexible wearable electronics.
研究领域:
材料科学
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电子工程
·
生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 16
·1-9
·
IF 2.8
Tong Huijuan,Wan Jiajia,Wang Sanlong,Yu Yang,Zhang Wenqing,Liu Rui,Huang Junjun
Electromagnetic shielding has becoming a priority of researches in recent years due to electromagnetic wave pollution with the rise of electromagnetic wave. However, the present silver printed composite material is costly, which would give rise to the waste of precious metal resources. A simple method involving electroless plating, which constructs the textured electromagnetic shielding material, has been proposed and demonstrated in this paper. The inner connection between the copper tube structure and the electromagnetic shielding effect is also studied. Results indicate that the metal particle/ligand structure on the woven fabric surface can be geared up for catalyzing the deposition of copper particles, which can self-assemble to form copper tubes. The copper tube has a face-centered cubic structure with a content of 45%, the electromagnetic shielding performance of the textured copper tube is 26 dB, in which the absorbed power coefficient of this structure is 0.73, the transmission is 0.003, and this material can pass 1000 times of bending tests at different angles. Therefore, electromagnetic shielding materials can be manufactured by electroless plating and applied to the production of protective clothing for pregnant women and shielding wall coverings.
研究领域:
材料科学
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电磁学
✓ 已验证
DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2022
·
IF 9.463
Renjie Ding,Haowen Zheng,Xu Zhao,Fuhua Xue,Pengyang Li,Jinhua Xiong,Zhong Chen,Zonglin Liu,Qingyu Peng,Xiaodong He
The excellent chemical, mechanical or physical functionalities of two-dimensional nanomaterials can be better performed by assembling two-dimensional nanosheets into crumpled structures. Herein, inspired by the wrinkles on human skin, we demonstrated a simple method to create out-of-plane crumpled surface morphology based on the expanding-shrinking process of tissue. The unique crumpled structure largely raises the fracture strain of Ti 3 C 2 T x MXene/Tissue composite film , which reaches 30.48%, while the tensile strength also shows an increasement to 28.63 MPa. The EMI shielding performance improved by the internal scattering achieves 77.0 dB. With vertically aligned Ti 3 C 2 T x nanosheets formed by the crumples, the through-plane thermal conductivity reached 1.12 W m −1 K −1 is obtained. Moreover, the enhanced photothermal conversion performance caused by the large specific surface area improves the solar-driven water evaporation rate to 1.85 kg m -2 h −1 . This work exhibits a novel method for fabricating multifunctional crumpled Ti 3 C 2 T x MXene composite film.
研究领域:
材料科学
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纳米技术
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能源与环境
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Liu Dan Yu,Pan Xue,Zhang Jingli,Tong Yinjia,Zhang Yixuan,Yu Yanjing,Zhang Qingda,Huang Mengfei,Yiheng Gao,Jie Li,Qufu Wei,Pengfei Lv
The rapid development of intelligent wearable devices and health monitoring equipment demands bio-based materials that integrate multiple functions with enhanced durability. Herein, this work is an first attempt to develop flexible electromagnetic shielding and stress-strain sensing based on a composite of polydopamine (PDA) modified-MXene (p-MXene) film with waterborne polyurethane (WPU)/bacterial cellulose (BC) film. The durable p-MXene@WPU/BC composite films are found to demonstrate excellent mechanical properties (370 MPa) and stable interfacial adhesion, attributing to the interlocking network structure between WPU and WBC and the strong hydrogen bonding between p-MXene layer and WPU/BC layer. The resultant composite film displays remarkable mechanosensing performance, facilitating the accurate and reliable detection of human physiological signals. Importantly, the prepared composite film could effectively reflect and absorb electromagnetic waves through the high conductivity of p-MXene layer and the staggered nanonetwork structure of WPU/BC layer, thus achieving a shielding effect of up to 72 dB. As proof-of-concept illustrations, it is noteworthy that the electromagnetic shielding efficacy displays a dynamic interaction with the strain sensing performance during the stretching process, which is primarily attributed to the moderating effect of the efficient attachment and parallel-aligned structure of p-MXene nanosheets. The research herein can offer new perspectives on the development of advanced bio-based multiple functions materials and dynamic perceptual interaction and smart wearables.
研究领域:
材料科学
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生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Gengmei Liu,Jinbao Li,Dingwen Yin,Huijuan Xiu,Simin Wang,Xuanchen Jiang,Yuxin Qin,Feiguo Hua,Yufei Jia,Mengxia Shen
With the rapid development of flexible and integrated electronics, there is an urgent need for electromagnetic shielding materials that meet the requirements of thinness, high electromagnetic interference shielding effectiveness (EMI SE), and low reflection loss (SE R ). This study designs an FL/CN composite film with an electric–magnetic bilayer multiscale structure, constructing an “absorption-reflection–absorption” electromagnetic wave dissipation path. First, spiky-ball-like Ni nanoparticles (NiNPs) were grown on cellulose nanofibers (CNF) via in situ reduction to form a magnetic layer (CN). This layer generates hysteresis and resonance losses while leveraging its multi-wall effect to induce polarization, multiple reflections, and scattering losses. Second, a multi-dimensional nanostructured FL conductive layer was fabricated using a mechanical blending method. The conductive network of silver nanowires (AgNWs) provides conductive loss, and the cocoa-tree-like SiO 2 @PDA structure forms a “resistor–capacitor” circuit to generate polarization loss, further attenuating and reflecting electromagnetic waves. Finally, the abundant heterogeneous interfaces in the macroscopic bilayer structure enhance electromagnetic wave dissipation. As a result, the composite film achieves an exceptional EMI SE of 85.59 dB with a low SE R of only 7.73 dB, alongside a tensile strength of 23.67 MPa. Additionally, the film exhibits excellent flexibility (bending radius < 6 mm), thermal management performance (thermal conductivity of 2.84 W/m·K), and strain sensing capabilities (response time of < 400 ms). This study provides a novel and scalable approach for developing flexible thin film EMI shielding materials with high shielding effectiveness and low reflection, demonstrating significant advantages over existing technologies in terms of efficiency, flexibility, and multifunctionality.
研究领域:
材料科学
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电子工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhiyi Wang,Jiming Su,Jianchao Wang,Yijin Feng,Qianqian Xu,Hui Wang,Hongru Jiang
In the context of the ongoing advancements in high-performance chips, heat dissipation, and electromagnetic shielding within electrical and electronic equipment are becoming increasingly intricate. Plastics have garnered widespread usage in electrical and electronic equipment as prevalent framework materials. However, the challenge persists in achieving a unification of electromagnetic interference (EMI) shielding, thermal conductivity (TC), and electrical insulation performance for plastics. Herein, we capitalize on the styrene–butadiene–styrene (SBS) copolymer to integrate the merits of polymers and magnetic minerals. Utilizing pyrrhotite (Pyr) tailings and waste polystyrene (PS) as raw materials, a formable block material denoted as PS-S@SBS/Pyr has been formulated. This material exhibits commendable performance in terms of TC, electrical insulation, and EMI shielding performance concurrently. The bidirectional bridging effect of SBS effectively reduces the interfacial thermal resistance between PS and Pyr. The TC of PS-S@SBS/Pyr can reach a maximum of 1.36 W/m‧K with a resistivity greater than 10 8 Ω‧m. Moreover, PS-S@SBS/Pyr consistently demonstrates a stable EMI shielding effectiveness of 33.1 dB within the 8–12 GHz frequency range, with absorption shielding predominating as the underlying mechanism. This green preparation method makes efficient utilization of two main solid wastes while increasing the added value of the material.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-10
·
IF 17.694
Liu Na,Li Qiaoqiao,Wan Hujie,Chang Libo,Wang Hao,Fang Jianhua,Ding Tianpeng,Wen Qiye,Zhou Liujiang,Xiao Xu
Although Ti 3 C 2 T x MXene is a promising material for many applications such as catalysis, energy storage, electromagnetic interference shielding due to its metallic conductivity and high processability, it’s poor resistance to oxidation at high temperatures makes its application under harsh environments challenging. Here, we report an air-stable Ti 3 C 2 T x based composite with extracted bentonite (EB) nanosheets. In this case, oxygen molecules are shown to be preferentially adsorbed on EB. The saturated adsorption of oxygen on EB further inhibits more oxygen molecules to be adsorbed on the surface of Ti 3 C 2 T x due to the weakened p-d orbital hybridization between adsorbed O 2 and Ti 3 C 2 T x , which is induced by the Ti 3 C 2 T x /EB interface coupling. As a result, the composite is capable of tolerating high annealing temperatures (above 400 °C for several hours) both in air or humid environment, indicating highly improved antioxidation properties in harsh condition. The above finding is shown to be independent on the termination ratio of Ti 3 C 2 T x obtained through different synthesis routes. Utilized as terahertz shielding materials, the composite retains its shielding ability after high-temperature treatment even up to 600 °C, while pristine Ti 3 C 2 T x is completely oxidized with no terahertz shielding ability. Joule heating and thermal cycling performance are also demonstrated.
研究领域:
材料科学
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纳米技术
·
表面化学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Jing Peng,Wei Xia,Lifen Su,Yang Zhou,Ru Xia,Bin Wu,Jiasheng Qian,Lei Miao
Polymer thermally conductive composites have emerged as ideal materials to address the issue of heat accumulation in various electrical devices. However, the practical application of thermally conductive composites often requires low filler content with multifunctional properties to meet the rapid development of electronic technology. Herein, highly oriented carbon nanotubes (O-CNTs) were grown in situ on vertically aligned melem skeletons by ice templating and high-temperature catalytic methods. The ordered CNTs were constructed by a cross-linking network in the matrix of epoxy (EP) for efficient heat transport pathways. The oriented O-CNTs/EP composite exhibits outstanding out-of-plane and in-plane thermal conductivities as 2.36 and 1.20 W/(m·K) with a CNT content of 4 wt %, respectively. The O-CNTs/EP composite also shows an excellent electromagnetic shielding effect of over 30 dB in the range of 8–40 GHz. This work provides a promising strategy for the construction of high-performance composites with advanced heat dissipation in thermal management materials.
研究领域:
材料科学
·
热管理技术
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2025
·
IF 4.7
Ziyi Zhang,Ziqing Gong,Zhoukai Zheng,Jing Zuo,Qingting Liu,Shengfei Hu
The construction of 3D networks enhanced filler utilization in conductive composites, but heat-induced liquefaction of solid epoxy resins hindered internal 3D structure formation. This study prepared semi-cured epoxy particles (S-E12-RGs) by mixing and pre-curing E12 epoxy with a curing agent. S-E12-RGs were combined with liquid epoxy E51, curing additives, and ethylenediamine-modified nickel-coated graphite (ENCG), and then hot-pressed into 3D composites. The crosslinking of S-E12-RGs prevented ENCG's inward migration, which promoted its selective dispersion in the E51 phase. With only 15 wt% nickel-coated graphite (NCG), the conductivity increased by 7 orders of magnitude compared to direct filling. At 25 wt% ENCG, the composites achieved a conductivity of 23.81 S/m, a thermal conductivity of 0.557 W/(m K), and an EMI shielding of 35 dB. Furthermore, DMA-digital multimeter analysis showed that ΔR/R 0 was less than 0.27 from 35 to 70°C at 0.1–50 Hz, which demonstrated excellent operational stability. Highlights A 3D network was formed in the thermosetting matrix via specific methods. The cross-linked S-E12-RGs promoted ENCG's selective dispersion in the E51 phase. The composite exhibited high electrical conductivity at low filler content. The material maintained stability within a specific temperature and frequency range.
研究领域:
材料科学
·
电气工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiao-Ai Ye,Xu Zhou,Xiao-Yan Zeng,Gui-Gen Wang
As wearable and flexible electronic devices continue to miniaturize and operate at higher frequencies, there is an urgent demand for polymer films that offer a high electromagnetic interference (EMI) shielding efficiency and effective thermal management capabilities, particularly under extreme environmental conditions. Conductive inks are extensively utilized in polymeric electromagnetic interference shielding coatings. However, the extensive utilization of organic solvents can lead to environmental pollution. Herein, we proposed a multifunctional conductive composite ink comprising waterborne polyurethane (WPU), silver nanosheets (AgNS) and heat-treated MXene, using deionized water as solvent. Inspired by the advantage of the unique “brick-mortar” layered structure, we fabricated a multifunctional flexible composite film with large size, high electrical conductivity, and good mechanical flexibility by blade coating, which has scalable manufacturing prospects for industrialization. The resultant films achieve a remarkable EMI SE of 87.3 dB at only 78 μm thickness and impressive mechanical fastness and chemical durability to various organic solvents. Meanwhile, the resultant composites also present a desirable Joule heating temperature (117 °C) and anisotropic thermal conductivity due to the compact and highly aligned morphology. In summary, our simple preparation technology and excellent comprehensive performance of composite inks have great potential in advanced thermal management and wearable electromagnetic protection devices.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Silong Wang,Zhihua Sun,Yuhao Wang,Taixin Liang,Baoguo Wang,Chunfang Fan,Yanjun Chen,Changcheng Liu,Que Huang
CuS-based composites are widely used in the fields related to photothermal energy storage and electromagnetic shielding and are excellent candidates for composites with phase change materials. To meet the requirements of micro-integration and electromagnetic resistance of electronic products and optimize the thermal management of electronic products, it is necessary to prepare new flexible composite phase change materials. In this paper, through the design of MPC@Ni Al-LDH/CuS double-layer structure, two-step vacuum filtration method is used, and the highly conductive materials CuS and MPC are introduced into the manufacture of PCM films. With the help of Ni Al-LDH, flame retardancy is introduced. The electromagnetic wave absorption performance is enhanced, and the existence of nano-cellulose (CNF) makes the film have excellent mechanical properties. Ni Al-LDH/MPC and CuS substrates with stable and high mechanical properties are prepared by ultrasonic treatment. According to scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform-infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), differential scanning calorimetry (DSC) and thermogravimetry (TG) characterizations, PEG successfully entered the MPC/CuS skeleton by vacuum filtration, and flexible phase change composite bilayers (MLPC) were obtained. Due to the synergistic effect of structure and components, the obtained composite film has many different excellent functions. Specifically, when MPC@Ni Al-LDH is 15 wt%, the phase transition enthalpy, thermal conductivity, electromagnetic shielding, and electrical conductivity are 146.8 J/g, 1.07 W/m·K, 38.8 dB and 126.4 S/m, respectively. The 3600 s infrared temperature measurement results show that the sample has stable thermal properties. Due to the presence of CuS, when MPC@Ni Al-LDH is 5 wt%, its absorbance can be kept at 1.51 L/(g·cm), and its photothermal conversion efficiency can reach 90.6 %. The MPC/CuS structure in the composite film provides many heat transfer channels, which reduces the phonon scattering in the heat transfer process and significantly increases thermal conductivity. Therefore, this multifunctional flexible phase change film can be used in photothermal conversion devices and for thermal management of electronic equipment, and it has broad application prospects in wearable equipment design due to its excellent electromagnetic shielding ability and infrared thermal stealth ability.
研究领域:
材料科学
·
能源科学
·
电子工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Liqiang Shang,Hao Zheng,Jiali Chen,Yiming Ren,Wenge Zheng,Bin Shen
Construction of conductive polymer composites (CPCs) for green electromagnetic interference (EMI) shielding with efficient shielding effectiveness (SE) but low EM reflection is urgently needed. Though the introduction of cellular or gradient structures can effectively reduce EM reflection, most current methods for preparing gradient CPC foams are relatively complex and lack sufficient applicability for large-scale production. Herein, we demonstrate the convenient fabrication of gradient-structured EVA/carbon nanostructure (CNS) foams through chemical foaming of thermally molded EVA/CNS composites with gradient CNS construction. Compared to uniform EVA/CNS foams, lower R coefficient with an effective EMI SE of >20 dB was obtained for gradient EVA/CNS foams with 3 phr CNS, accompanied by an average green shielding index (g s ) of ∼2.8. This study provides a more feasible two-step process of thermal press molding and chemical foaming for mass manufacturing of gradient CPC foams with effective green EMI shielding characteristics.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）