JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Kaipeng Tian,Jiawei Mu,Zijie Li,Yibo Yang,Kuibao Zhang,Kailei Lu,Jianqi Qi,Tiecheng Lu
Advanced nuclear plants demand shielding windows for in situ monitoring and robust shielding against gamma (γ) and neutron (n) radiation. However, existing windows lack simultaneous γ/n attenuation and sufficient fracture toughness, hindering practical deployment. To address this, a novel Gd 3 TaO 7 transparent ceramics (GTO-TCs) for an efficient n and γ dual-shielding window is proposed and demonstrated. The developed GTO ceramic window exhibits high optical transmittance (78% at 2000 nm) and excellent mechanical properties (Hv and K IC are 9.61 GPa and 2.60 MPa·m 1/2 , respectively). Significantly, the GTO ceramic presents a γ-ray linear absorption coefficient of 0.34 for over 90% γ attenuation from 60 Co at 5.8 cm thickness, coupled with Monte Carlo verified full thermal n attenuation (<0.4 eV) at merely 2 mm. The developed GTO window possesses excellent n and γ dual-shielding properties, robust fracture toughness, and has promising prospects for service in extreme nuclear environments.
研究领域:
材料科学
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核工程
·
无机非金属材料
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辐射防护
·
先进陶瓷
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Xue Liu,Jianguo Deng,Yingchun Lu,Xin Li,Fuhan Mai,Lanxiang Ji,Xiaofeng Bai
This study focused on radiation shielding materials for nuclear applications, employing a vacuum-assisted impregnation method to optimise the microstructure and establish a synergistic shielding mechanism combining scattering and absorption. Specifically, melamine sponge (MS) is first modified using KH550 to form –NH 2 active sites on its pore surfaces. Subsequently, it is immersed in a composite solution to construct “reflective capsules”. Finally, gradient encapsulation is performed using polyborosiloxane and polyurethane. The results show that compared with pure MS, the tensile strength of this material doubles, the elongation increases by 179 %, and its shielding capabilities against 59.6 keV γ-rays and 0.025 keV thermal neutrons increase by 1442 % and 1593 % respectively, reaching 27.14 % and 43.35 %. Additionally, it has a photothermal peak temperature of 78.5 °C and stable thermal response. Furthermore, relying on the three-dimensional elastic network of the MS and the conductive pathway of MXene, the material achieves a piezoresistive coefficient of 5.27 kPa −1 , demonstrating potential for application as a pressure-sensitive sensor. Through microstructure design and functional integration, this work makes the material suitable for complex scenarios such as nuclear facility maintenance and emergency rescue.
研究领域:
核医学
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生物材料学
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放射防护
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功能材料
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纳米复合材料
·
传感器材料
✓ 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
POLYMER COMPOSITES
·
2024
·
IF 4.8
Songbo Tan,Peipei Jiang,Jun Liu,Xuan Yang,Yifeng Lai,Xiaowei Hu,Guowen Peng,Guohui Wang
With the increasing complexity of radiation environments, the development of effective shielding materials against 222 Rn and gamma radiation is critical for ensuring human health and safety. This study utilized a two-step hydrothermal method to synthesize Gd₂O(CO₃)₂@bismuth-based metal–organic frameworks (Bi-MOFs)/graphene nanoplatelets (GBG) composite fillers, followed by melt blending and hot-press molding to develop GBG/polymethyl methacrylate (PMMA) composites aimed at shielding against 222 Rn and gamma radiation. The successful synthesis and structural integrity of the composites were confirmed using various characterization techniques, including x-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, and energy-dispersive x-ray spectroscopy. The experimental results indicate that the GBG composite filler exhibits superior enhancement in 222 Rn shielding capabilities, with the 222 Rn diffusion coefficient of GBG/PMMA-20 composites reduced to 1.41 × 10 −13 m 2 /s, a 98.6% decrease compared to pure PMMA (1.04 × 10 −11 m 2 /s). Furthermore, the GBG demonstrates outstanding improvements in gamma-ray shielding performance, with the mass attenuation coefficient of GBG/PMMA-50 reaching 2.70 cm 2 /g for 59.5 keV gamma rays, nearly 16 times higher than that of pure PMMA (0.16 cm 2 /g). Additionally, thermogravimetric analysis revealed that the introduction of GBG fillers significantly improves the thermal stability of the PMMA composites. This work could offer an innovative approach to the design of 222 Rn and gamma radiation shielding materials. Highlights Developed a novel composite for enhanced 222 Rn and gamma radiation shielding. Introduced Gd-based fillers to enhance gamma radiation attenuation in PMMA composites. Achieved superior thermal stability in PMMA composites compared to pure PMMA. Materials designed for application in high-radiation environments, including mining.
研究领域:
材料科学
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辐射防护
·
复合材料
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Zhipeng Huo,Yidong Lu,Zuoyang Chen,Jie Zhang,Hong Zhang,Guoqiang Zhong
In this research, a series of Eu 2 O 3 /B 4 C/HDPE composites containing micromorphology tunable Eu 2 O 3 submicron spheres as fillers are prepared for shielding neutron and gamma ray. The influence of microstructure of Eu 2 O 3 fillers on thermal stability, mechanical, and radiation shielding properties of composites are studied in detail. The growth process of Eu 2 O 3 precursor (Eu(OH)CO 3 ) follows the LaMer and Ostwald ripening mechanism. The FESEM reveal that the microstructure of synthesized Eu 2 O 3 is submicron sphere and the particle size decreases with addition of urea content in the reactant solution. HRTEM and SEAD images reveal that the overall crystal morphology of the Eu 2 O 3 fillers is polycrystalline. BET analyses reveal that the hysteresis loops of nitrogen adsorption-desorption isotherms changes from Type H1 to H3 after Eu 2 O 3 fillers are ball-milled, which is attributed to the suppression of nanoparticle agglomeration by ball milling. The FESEM images and EDS mapping of the fracture surfaces of the composites reveal that Eu 2 O 3 fillers are evenly distributed in the HDPE matrix. It is revealed that under the condition that the agglomeration of the nanoparticles is effectively suppressed, the higher BET-specific surface area and smaller size of Eu 2 O 3 fillers are conducive to the various properties of the composites. The superior composite containing Eu 2 O 3 (R = 1:30)/B 4 C/HDPE has a 99.1 % neutron shielding rate with 15 cm thickness under a 252 Cf neutron source and a 73.1 % gamma shielding rate with 15 cm thickness under a 137 Cs gamma source.
研究领域:
材料科学
·
辐射防护
·
核工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2020
·Vol. 126
·期 4
·1-10
·
IF 1.81
Wu Guangfeng,Liu Chang,Lu Congcong,Zhang Huixuan
In order to protect the articles in buildings from ultraviolet radiation and save air-conditioning energy, polyvinyl butyral laminated glass are employed and produced in large quantities. Several inorganic particles with blocking effect have been doped into PVB, such as TiO 2 , ZnO, and ATO. T-ZnOw is a widely used functional structural material with excellent absorption properties. Herein, T-ZnOw was lipophilic modified with silane coupling agent KH-570, and T-ZnOw/PVB composite films were prepared via subsequent solution blending. As per the FTIR spectrum, a characteristic peak of Si–O–Zn at 1165 cm −1 was observed, indicating that T-ZnOw was successfully modified by KH-570. T-ZnOw before and after modification was separately mixed with the St/H 2 O mixed solution. The modified T-ZnOw could be dispersed in styrene instead of water, displaying a certain lipophilicity. On the other hand, from a microscopic perspective, the SEM images suggest that filling the filler in the form of a suspension can disperse the modified T-ZnOw in PVB in an independent four-needle form, which contributes toward improvement of the agglomeration of T-ZnOw in the PVB matrix. The UV–Vis–NIR spectrum shows that the addition of T-ZnOw reduced the UV transmittance of T-ZnOw/PVB composite films from 50.84 to 25.77%, resulting in a decrease in near-infrared transmittance from 82.14 to 43.22%. The ultraviolet and near-infrared light barrier properties of composite films were more than twice that of the ordinary PVB films. Moreover, the modified T-ZnOw endowed composite films with stronger ultraviolet light and near-infrared light-blocking properties, or better visible light transmittance. And the falling ball impact test proved that there was no clear relationship between the thickness of the film and the adhesion. This work proposes a new solution and preparation method for the production of energy-saving glass. Therefore, it is expected that using composite films instead of traditional PVB films to make laminated glass can greatly contribute toward energy conservation and environmental protection.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
Materials Chemistry Frontiers
·
2021
·Vol. 5
·期 17
·6553-6558
·
IF 6.482
Jin-Cheng Shu,Si-Qi Zhu,Wen-Qiang Cao,Mao-Sheng Cao
A multi-functional electromagnetic (EM) device is an important pillar for promoting the progress of an intelligent society. Herein, a ZIF-67 nanoneedle array assembled on a nickel substrate is used as a precursor to construct a C/Co3O4 nanoarray via a simple thermal treatment approach, integrating the two functions of EM and thermal shielding. Its unique three-dimensional porous structure and integrated components endow this material with an average shielding efficiency of 99.62% and a maximum temperature difference of about 25 K. In addition, this skeleton structure features light weight, low density and small cost, which can be utilized to construct wearable devices to protect human beings from EM and thermal radiation. This study furnishes a novel horizon for the design and construction of multi-functional and wearable EM devices, and promotes the development of the EM field and the progress of multi-disciplinary technologies.
研究领域:
材料科学
·
电磁学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Ke Song,Liyan Xue,Minzhong Huang,Kaixian Wang,Zhiyi Wang,Haiying Xin,Fan Yang,Fengzhi Tan,Heng Chen
The development of multifunctional protective materials with electromagnetic wave absorption and (n, γ) radiation shielding properties is urgently required to guarantee secure functioning of space nuclear power sources. In this work, the multicomponent perovskite ferrites (Ca 0.2 Nd 0.2 Gd 0.2 Yb 0.2 Bi 0.2 )FeO 3 (RE-1), (Ca 0.2 Nd 0.2 Gd 0.2 Ho 0.2 Bi 0.2 )FeO 3 (RE-2), and (Ca 0.2 Nd 0.2 Gd 0.2 Ho 0.2 Bi 0.2 ) (Fe 0.9 Ti 0.1 )O 3 (RE-3) were prepared by the sol-gel method. Through multicomponent regulation, the dipole polarization and interfacial electronic transitions can be affected by the lattice distortion effect, which enhances the electromagnetic wave absorption characteristics. With an effective absorption bandwidth of 2.92 GHz and a minimum reflection loss of −46.94 dB, RE-3 exhibits the most efficient electromagnetic wave absorption of the three manufactured samples. Regarding the shielding of neutrons, the shielding efficiency of the RE-3 (45 wt%)-polypropylene (RE-3/PP 3 ) reached 99.78 %, which is mainly due to the large neutron absorption cross section of the rare-earth element Gd. With respect to the γ-ray protection capabilities, the lead equivalent values for the RE-3/PP 3 composites are 0.5083 mmPb at a 65 keV energy when narrow-band filtered X-rays are used and 1.1977 mmPb at a 1250 keV energy when a 60 Co gamma source is used. These findings indicate that multicomponent regulation can enhance the Compton effect by altering the valence electron coverage space and that rare-earth elements significantly improve the γ-ray shielding effectiveness of a material in the weak absorption region of lead. In this work, the integration of electromagnetic wave absorption and (n, γ) radiation shielding properties was achieved by multicomponent regulation, which provides a novel tactic for the developing multifunctional protective materials used in the field of deep space exploration.
研究领域:
材料科学
·
核物理学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
Nano-Micro Letters
·
2025
·Vol. 17
·期 1
·1-11
·
IF 36.3
Liu Xianhu,Zhang Haoyu,Pan Yamin,Ma Jun,Liu Chuntai,Shen Changyu
As living standards improve, the energy consumption for regulating indoor temperature keeps increasing. Windows, in particular, enhance indoor brightness but also lead to increased energy loss, especially in sunny weather. Developing a product that can maintain indoor brightness while reducing energy consumption is a challenge. We developed a facile, spectrally selective transparent ultrahigh-molecular-weight polyethylene composite film to address this trade-off. It is based on a blend of antimony-doped tin oxide and then spin-coated hydrophobic fumed silica, achieving a high visible light transmittance (> 70%) and high shielding rates for ultraviolet (> 90%) and near-infrared (> 70%). When applied to the acrylic window of containers and placed outside, this film can cause a 10 °C temperature drop compared to a pure polymer film. Moreover, in building energy simulations, the annual energy savings could be between 14.1% ~ 31.9% per year. The development of energy-efficient and eco-friendly transparent films is crucial for reducing energy consumption and promoting sustainability in the window environment.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinguo Zhu,Qiru Chang,Hongying Li,Jiading Wang,Shaoyun Guo,Xianlong Zhang
Personal protective equipment (PPE) plays a vital role in healthcare, industry, and military settings, offering essential protection against various environmental hazards. However, the growing environmental challenges and demand for multifunctional integration make developing PPE that outperforms traditional single-function equipment a significant challenge. Herein, we present a flexible and wearable sandwich-structured film, fabricated by integrating an MXene core layer with Gd(OH) 3 /TPU outer layers through electrospinning and vacuum filtration process, simultaneously offering neutron and electromagnetic interference (EMI) shielding, energy harvesting, and thermal management. Mimicking spider silk's crystalline and amorphous regions, the outer layers integrate Gd(OH) 3 nanorods into TPU nanofibers, thereby enhancing hydrogen bonding and achieving a high tensile strength of 22.94 MPa. Extensive hydrogen-bonding interactions firmly bind the MXene conductive core layer to the gadolinium-rich magnetic outer layers, providing excellent neutron ( μ = 22.95 cm −1 ) and EMI shielding (SE = 35.1 dB). Additionally, the film also functions as a triboelectric nanogenerator (TENG), capturing kinetic energy to power low-voltage electronic devices, reducing reliance on external power in harsh settings. Remarkably, its superior Joule heating capability rapidly reaches various temperature (up to 78.5 ℃) by regulating external voltage to meet diverse user requirements. This study paves the way for future advancements in the realm of multifunctional PPE.
研究领域:
材料科学
·
生物仿生学
·
防护装备工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2020
·
IF 4.915
Hao Yuan,Ting Li,Yang Wang,Piming Ma,Mingliang Du,Tianxi Liu,Yangyang Yan,Huiyu Bai,Mingqing Chen,Weifu Dong
Polymeric optical composites have played an important role in selectively shielding solar light to satisfy the increasing requirements of photoprotection and environmental comfort as well as improving the energy saving efficiency of buildings and cars. In the present work, a smart polymer film with high near-infrared (NIR) and ultraviolet (UV) light shielding, acceptable visible light transmittance was developed on basis of CuS nanoplate. The influences of the CuS nanoplate size and the thickness of polymer composite films on the optical and shielding properties were studied. In particular, the composite film can shield 86.5% of the near-infrared light from 800 to 1800 nm and at the same time permitting acceptable visible light (63.4%) with the film thickness of 30 μm. In order to improved UV-shielding performance, CuS nanoplate coated by polydopamine (PDA) was used for preparation of polymer composite film. It was found that UV-shielding performance was further promoted in the entire UV region and exhibited a synergistic relationship between PDA and CuS, which certificating the outstanding contribution of PDA layer on the surface of CuS nanoplate. In a word, the comprehensive research on nanocomposite fabrication, surface modification, and integration techniques enable us to fabricate highly flexible, transparent and reliable composite films with outstanding UV and NIR shielding performance. This novel film is potential to be used as smart windows of buildings and cars for the application of cooling energy saving and UV protection.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·
IF 3.057
Yongji Yao,Liangmiao Zhang,Zhang Chen,Chuanxiang Cao,Yanfeng Gao,Hongjie Luo
A simple two-step route is developed to fabricate hexagonal Cs x WO 3 nanoparticles . The core of this route is the preparation of the precursor by drying the mixture of WO 3 sol and CsCl , which leads to a higher Cs/W (0.32) ratio at low temperature in a short time. During reaction, oleic acid, used as a solvent, can be adsorbed on the surface of Cs x WO 3 nanoparticles, which results in small particle size (20 nm × 10 nm) and mild agglomeration. In addition, oleic acid also plays a role as a reducing agent in forming Cs x WO 3 nanoparticles without any further post-treatment. Furthermore, the film prepared from as-synthesized Cs 0.32 WO 3 nanoparticles shows excellent NIR-shielding properties (approximately 99% of the near-infrared radiation is cut off over a wavelength range of 780–2600 nm and the visible-light transmittance at 465 nm is 78.9%) when covering on an ordinary sheet of glass. A model which simulates the real environment is applied to evaluate heat-shielding performance of the Cs 0.32 WO 3 film while comparing with that of ordinary glass and commercial ITO glass (10 Ω □ −1 ). Results revealed that the Cs 0.32 WO 3 film showed superior performance than others.
研究领域:
材料科学
·
纳米技术
✓ 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）