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学者姓名：施永乾
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Abstract ：
Epoxy resins (EP) is classic thermosetting material, but its flammability severely limits its usage. In this paper, a novel flame retardant (FePor@PZS) was synthesized by growing polyphosphazene (PZS) in situ onto the surface of iron porphyrin organic frameworks (FePor). Attributed to the synergistic flame retardant system of nitrogen, phosphorus and iron elements, FePor@PZS endowed excellent fire safety property to EP. Upon incorporating 2 wt% FePor@PZS, EP/FePor@PZS got an LOI value of 27.3%, achieving the V-1 level in the test of UL-94. Besides, the peak rate of heat release, release of total heat, peak rate of smoke production, production of total smoke, peak rate of CO2 production and peak rate of CO production of EP/FePor@PZS were decreased by 31.8%, 21.5%, 17.5%, 22.3%, 34.8% and 73.5%, respectively, and the quantity of residual carbon increased from 9.69% to 27.86%, compared with neat EP. FePor could break off to form a single pyrrole ring to promote the generation of the early carbon layers. Additionally, the Fe element in FePor and the P element in PZS played a role of catalytic carbonization. Meanwhile, PZS could decompose into non-combustible gases, and produce PO and HPO radicals to terminate the EP chain-opening reaction. This research gives a novel approach for the application of porphyrin derivatives in flame retardant composites. (c) 2024 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword ：
Epoxy resins Epoxy resins Fire safety Fire safety Multi-element synergistic Multi-element synergistic Porphyrin organic frameworks Porphyrin organic frameworks
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| GB/T 7714 | Zhang, Jiale , Yin, Lian , Luo, Jianjian et al. Multi-element synergistic effect based on functionalized porphyrin organic frameworks: Towards for promoting fire safety of epoxy [J]. | ADVANCED POWDER TECHNOLOGY , 2025 , 36 (1) . |
| MLA | Zhang, Jiale et al. "Multi-element synergistic effect based on functionalized porphyrin organic frameworks: Towards for promoting fire safety of epoxy" . | ADVANCED POWDER TECHNOLOGY 36 . 1 (2025) . |
| APA | Zhang, Jiale , Yin, Lian , Luo, Jianjian , Zhou, Keqing , Shi, Yongqian , Yu, Bin et al. Multi-element synergistic effect based on functionalized porphyrin organic frameworks: Towards for promoting fire safety of epoxy . | ADVANCED POWDER TECHNOLOGY , 2025 , 36 (1) . |
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There is a significant increase in the demand for lightweight and compressible electromagnetic interference (EMI) shielding materials in various fields. Though MXene aerogels hold immense potential as EMI shielding materials, several shortcomings including poor water resistance, low mechanical robustness, easy oxidation, and high cost limits of their wide application. This work reported a novel strategy involving the co-assembly of MXene and cellulose nanofibers (CNF) through directional freezing and freeze-drying, followed by the capsulation-concreting of a thin layer of flame-retardant polydimethylsiloxane (PDMS) onto the aerogel, to multi-hierarchically construct a series of high-performance CNF/MXene/PDMS composite aerogels. The lightweight CNF/MXene/PDMS/MPP-Zr@PDA composite aerogel achieved ultrahigh EMI shielding effectiveness of 96.8 dB (X-band) and utilization efficiency of 1713.27 dB g g-1. Furthermore, the PDMS coating effectively imparted excellent compressibility and durability to the 3D scaffold, resulting in a compressive strength of 17.01 kPa for the composite aerogel, representing 199.5% increase compared to CNF aerogel. Additionally, the composite aerogel exhibited outstanding flame-retardant properties (54.6% reduction in heat release rate), ultralow thermal conductivity of 0.0530 W m-1 K-1 and excellent hydrophobicity. Therefore, the durable and flame-retardant CNF/MXene/PDMS composite aerogels hold promising applications in EMI protection, thermal management, smart fire detection, and other specific fields.
Keyword ：
electromagnetic interference shielding electromagnetic interference shielding flame retardancy flame retardancy mechanical durability mechanical durability multihierarchical structure multihierarchical structure thermal insulation thermal insulation
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| GB/T 7714 | Shi, Yongqian , Zhu, Yanjun , Liu, Shan et al. Multi-Hierarchically Constructing Durable and Flame Retardant CNF/MXene/PDMS Composite Aerogels for Superhigh Electromagnetic Shielding Performance and Ultralow Thermal Conductivity [J]. | SMALL , 2025 . |
| MLA | Shi, Yongqian et al. "Multi-Hierarchically Constructing Durable and Flame Retardant CNF/MXene/PDMS Composite Aerogels for Superhigh Electromagnetic Shielding Performance and Ultralow Thermal Conductivity" . | SMALL (2025) . |
| APA | Shi, Yongqian , Zhu, Yanjun , Liu, Shan , Fu, Libi , Chen, Juntian , Liu, Jiawen et al. Multi-Hierarchically Constructing Durable and Flame Retardant CNF/MXene/PDMS Composite Aerogels for Superhigh Electromagnetic Shielding Performance and Ultralow Thermal Conductivity . | SMALL , 2025 . |
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There is a high proportion of social groups in crowds. The influence of social groups on crowd mobility is particularly evident in emergency situations and in confined movement environments. However, studies on the characteristics of social group movement through a bottleneck with different widths are limited. Therefore, the computation and simulation are performed in a corridor with a bottleneck involving individuals and three types of groups (namely two-person, three-person and four-person groups) using a modified multi-grid model. The original multigrid model is modified by introducing interactions between pedestrians, avoidance behavior and group behavior, and validated by data from a controlled experiment. It is found that the group configuration can be adjusted to the changing scenarios during the passing movement. The movement efficiency and level of walking comfort for pedestrians are significantly improved in wider bottlenecks. Passing efficiency is evidently increased and congestion is reduced, when social groups occupy a large proportion of the crowd in a narrow bottleneck. These numerical findings may provide new insights for analyzing nonlinear pedestrian social group dynamics.
Keyword ：
Bottlenecks Bottlenecks Group behavior Group behavior Pedestrian dynamics Pedestrian dynamics Simulation Simulation The multi-grid model The multi-grid model
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| GB/T 7714 | He, Yangjian , Shi, Qingxin , Fu, Libi et al. Application of the multi-grid modelling method to pedestrian social group dynamics through a bottleneck [J]. | SIMULATION MODELLING PRACTICE AND THEORY , 2025 , 139 . |
| MLA | He, Yangjian et al. "Application of the multi-grid modelling method to pedestrian social group dynamics through a bottleneck" . | SIMULATION MODELLING PRACTICE AND THEORY 139 (2025) . |
| APA | He, Yangjian , Shi, Qingxin , Fu, Libi , Chen, Qiyi , Shen, Chenxin , Zhang, Yu et al. Application of the multi-grid modelling method to pedestrian social group dynamics through a bottleneck . | SIMULATION MODELLING PRACTICE AND THEORY , 2025 , 139 . |
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为克服开展真实残障人员运动实验的挑战,设计并研制了一个能够模拟残障人员和健全人员组成的异质人群运动教学实验平台.结合文献调研、可控实验、图像处理等方法,设计了通道中残障人员和健全人员组成的异质人群单向运动实验方案,模拟真实的异质人群运动过程.基于理论分析,从人员运动轨迹、典型行为特征、速度、密度、流量等角度分析异质人群的基本运动规律,结果符合经验结论,验证了该平台模拟异质人群运动的可行性和合理性.该实验平台可为交通安全、安全管理等领域的实验研究与教学创新提供参考.
Keyword ：
图像处理 图像处理 实验平台 实验平台 异质人群 异质人群 残障人员 残障人员 运动特征 运动特征
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| GB/T 7714 | 傅丽碧 , 刘宇星 , 施永乾 . 模拟残障人员和健全人员组成的异质人群运动教学实验平台设计 [J]. | 实验技术与管理 , 2025 , 42 (2) : 52-58 . |
| MLA | 傅丽碧 et al. "模拟残障人员和健全人员组成的异质人群运动教学实验平台设计" . | 实验技术与管理 42 . 2 (2025) : 52-58 . |
| APA | 傅丽碧 , 刘宇星 , 施永乾 . 模拟残障人员和健全人员组成的异质人群运动教学实验平台设计 . | 实验技术与管理 , 2025 , 42 (2) , 52-58 . |
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| GB/T 7714 | Shi, Yongqian , Huang, Ruizhe , Liu, Miao et al. Hierarchical rigid porous composites towards impact resistance and fire safety (vol 270, 111139, 2024) [J]. | COMPOSITES PART B-ENGINEERING , 2024 , 273 . |
| MLA | Shi, Yongqian et al. "Hierarchical rigid porous composites towards impact resistance and fire safety (vol 270, 111139, 2024)" . | COMPOSITES PART B-ENGINEERING 273 (2024) . |
| APA | Shi, Yongqian , Huang, Ruizhe , Liu, Miao , Han, Junqiang , Xu, Peihui , Feng, Yuezhan et al. Hierarchical rigid porous composites towards impact resistance and fire safety (vol 270, 111139, 2024) . | COMPOSITES PART B-ENGINEERING , 2024 , 273 . |
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Rapid and safe implementation of viscous crude oil cleanup is still a daunting challenge. Superhydrophobic materials are outstanding candidates for handling solvent spills, but are limited to recovering low viscosity oil and organic solvents. Hence, a polyurethane foam (PMRP-PU) integrating superelasticity, dual solar-responsive and fire resistance was fabricated by blending MXene and reduced graphene oxide (RGO) via self-foaming method. The surface temperature of the PMRP-PU reached 105 degrees C after simulated sunlight irradiation for 600 s. PMRP-PU had outstanding adsorption performance for low-viscosity oil and organic solvent (similar to 70.1 g/g) at room temperature, and the adsorption capacity of high -viscosity oil was also increased by 202.1 % compared with pure PU. Additionally, the adsorption capacity of PMRP-PU-3 remained at 92.7 % of the original level after 20 cycles of experiments. Excellent acid and alkali resistance and high temperature stability also greatly improved the environmental adaptability of the foam. Contrary to the flammability of pure PU, the peak heat release rate and total heat release of PMRP-PU-3 were decreased by 22.6 % and 25.2 %, respectively, and the melt dripping phenomenon disappeared during burning, exhibiting excellent fire safety. Briefly, this polyurethane foam can be repeatedly used for oil spill cleaning, and has a broad development prospect in the field of oil -water separation.
Keyword ：
Adsorption capacity Adsorption capacity Flame retardancy Flame retardancy High-viscosity oil High-viscosity oil Polyurethane foam Polyurethane foam Solar-responsive Solar-responsive
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| GB/T 7714 | Yin, Lian , Zhou, Mengqing , Shi, Yongqian et al. Construction of superhydrophobic flexible polyurethane with dual nano-enhancement effect for solar-assisted high-viscosity oil cleanup and oil-water separation [J]. | APPLIED SURFACE SCIENCE , 2024 , 660 . |
| MLA | Yin, Lian et al. "Construction of superhydrophobic flexible polyurethane with dual nano-enhancement effect for solar-assisted high-viscosity oil cleanup and oil-water separation" . | APPLIED SURFACE SCIENCE 660 (2024) . |
| APA | Yin, Lian , Zhou, Mengqing , Shi, Yongqian , Zhou, Keqing . Construction of superhydrophobic flexible polyurethane with dual nano-enhancement effect for solar-assisted high-viscosity oil cleanup and oil-water separation . | APPLIED SURFACE SCIENCE , 2024 , 660 . |
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MXene-based thermal camouflage materials have gained increasing attention due to their low emissivity, however, the poor anti-oxidation restricts their potential applications under complex environments. Various modification methods and strategies, e.g., the addition of antioxidant molecules and fillers have been developed to overcome this, but the realization of long-term, reliable thermal camouflage using MXene network (coating) with excellent comprehensive performance remains a great challenge. Here, a MXene-based hybrid network comodified with hyaluronic acid (HA) and hyperbranched polysiloxane (HSi) molecules is designed and fabricated. Notably, the presence of appreciated HA molecules restricts the oxidation of MXene sheets without altering infrared stealth performance, superior to other water-soluble polymers; while the HSi molecules can act as efficient cross-linking agents to generate strong interactions between MXene sheets and HA molecules. The optimized MXene/HA/HSi composites exhibit excellent mechanical flexibility (folded into crane structure), good water/solvent resistance, and long-term stable thermal camouflage capability (with low infrared emissivity of approximate to 0.29). The long-term thermal camouflage reliability (approximate to 8 months) under various outdoor weathers and the scalable coating capability of the MXene-coated textile enable them to disguise the IR signal of various targets in complex environments, indicating the great promise of achieved material for thermal camouflage, IR stealth, and counter surveillance. A high-performance thermal camouflage material is designed and successfully fabricated by decorating MXene network with hyaluronic acid (HA) and hyperbranched polysiloxane (HSi). Besides excellent mid-infrared (IR) thermal camouflage, such material also integrates multiple advantages into itself, including being large-scale, mechanically flexible, weather-resistant, and thus showing great potential for stealth applications. image
Keyword ：
infrared stealth infrared stealth long-term anti-oxidation long-term anti-oxidation micro-/nanoarchitecture micro-/nanoarchitecture MXene MXene weather resistance weather resistance
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| GB/T 7714 | Guo, Bi-Fan , Wang, Ye-Jun , Cao, Cheng-Fei et al. Large-Scale, Mechanically Robust, Solvent-Resistant, and Antioxidant MXene-Based Composites for Reliable Long-Term Infrared Stealth [J]. | ADVANCED SCIENCE , 2024 , 11 (17) . |
| MLA | Guo, Bi-Fan et al. "Large-Scale, Mechanically Robust, Solvent-Resistant, and Antioxidant MXene-Based Composites for Reliable Long-Term Infrared Stealth" . | ADVANCED SCIENCE 11 . 17 (2024) . |
| APA | Guo, Bi-Fan , Wang, Ye-Jun , Cao, Cheng-Fei , Qu, Zhang-Hao , Song, Jiang , Li, Shi-Neng et al. Large-Scale, Mechanically Robust, Solvent-Resistant, and Antioxidant MXene-Based Composites for Reliable Long-Term Infrared Stealth . | ADVANCED SCIENCE , 2024 , 11 (17) . |
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Developing a flame retardant and puncture resistant nylon 6 (PA6) film composite with excellent gas barrier property as a food packaging material is still a great challenge. Herein, microencapsulation and hydrogenbonding interaction were adopted to synthesize a multifunctional additive (SiO2@CS@GO-S), which simultaneously improved the mechanical, gas barrier and flame retardant performances of PA6 film. The obtained results indicated that the gas barrier property of the as -prepared PA6 film composite containing 0.1 wt% SiO2@CS@GO-S (PA6/SiO2@CS@GO-S-0.1) was obviously improved. For instance, the oxygen transmission rate of the film composite decreased dramatically by 52.0% compared with that of PA6 film. Furthermore, the puncture resistance of the PA6/SiO2@CS@GO-S-0.1 markedly increased from 18.3 N of PA6 to 25.3 N. Additionally, both thermal stability and fire safety of the PA6/SiO2@CS@GO-S film composites were enhanced. The peak of heat release rate and total smoke release of the PA6/SiO2@CS@GO-S-0.1 were reduced by 10.7% and 19.3%, respectively, compared to those of PA6 film. This work provides a new paradigm for creating a multifunctional PA6 film composite with high performance for grain preservation and loss reduction.
Keyword ：
Fire safety Fire safety Gas barrier property Gas barrier property Nylon 6 film composite Nylon 6 film composite Puncture resistance Puncture resistance
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| GB/T 7714 | Liu, Miao , Qiu, Yitong , Shi, Yongqian et al. Fabrication of flame retardant nylon 6 film composites with superior gas barrier property and puncture resistance [J]. | COMPOSITES COMMUNICATIONS , 2024 , 47 . |
| MLA | Liu, Miao et al. "Fabrication of flame retardant nylon 6 film composites with superior gas barrier property and puncture resistance" . | COMPOSITES COMMUNICATIONS 47 (2024) . |
| APA | Liu, Miao , Qiu, Yitong , Shi, Yongqian , Qiu, Yijuan , Xu, Peihui , Chen, Xi . Fabrication of flame retardant nylon 6 film composites with superior gas barrier property and puncture resistance . | COMPOSITES COMMUNICATIONS , 2024 , 47 . |
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Silicone rubber foam (SiRF) is increasingly recognized as a versatile polymeric foam in industrial applications, owing to its broad temperature stability, weather resistance, and outstanding thermal insulation properties. However, the inherent flammability of SiRFs limits their application in certain areas. Previous attempts to enhance the flame retardancy of SiRFs typically involved the addition of various functional fillers and complex assembly strategies, which often lead to complicated processes, weak interfacial bonding, and potential degradation of other key properties. Therefore, preparing flame-retardant silicone rubber using a simple, low-filler, and large-scale production strategy is a significant challenge. In this study, we introduce a self-adhesive silicone rubber foam (Sa-SiRF) modified with residual Si -H reactive groups using a straightforward dip-coating method, employing graphene oxide nanosheets (GO) for this enhancement. The refined Sa-SiRF-GO nanocomposite exhibits exceptional mechanical properties across a temperature range of 30-200 C-degrees, as well as remarkable surface hydrophobicity, evidenced by a high water contact angle (WCA) of approximately 142.6(degrees). Additionally, this material demonstrates robust structural stability under varying environmental conditions (pH = 1, 7, 14), and an improved flame retardancy, with the limiting oxygen index (LOI) rising from 21.5 % to 27.0 %. Furthermore, a comprehensive analysis of the flame retardation mechanism of Sa-SiRF-GO samples was conducted. This flame-retardant silicone rubber foam, developed through a GO-enhanced dip-coating process, shows great promise for applications that require both flame retardancy and thermal insulation. Our approach, which leverages interfacial engineering to create GO-coated self-adhesive SiRF composites, effectively overcomes the limitations associated with high filler content and the complexities of traditional methods. This innovative technique is poised to spur further advancements in conventional PDMS foams and contribute to the development of advanced polymer foam nanocomposites.
Keyword ：
Dip-coating Dip-coating Graphene oxide Graphene oxide Interface engineering Interface engineering Multifunctionality Multifunctionality Silicone rubber foam Silicone rubber foam
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| GB/T 7714 | Shen, Fei-Xiang , Li, Yang , Chen, Zuan-Yu et al. Lightweight, surface hydrophobic and flame-retardant polydimethylsiloxane foam composites coated with graphene oxide via interface engineering [J]. | PROGRESS IN ORGANIC COATINGS , 2024 , 189 . |
| MLA | Shen, Fei-Xiang et al. "Lightweight, surface hydrophobic and flame-retardant polydimethylsiloxane foam composites coated with graphene oxide via interface engineering" . | PROGRESS IN ORGANIC COATINGS 189 (2024) . |
| APA | Shen, Fei-Xiang , Li, Yang , Chen, Zuan-Yu , Shen, Yan-Bin , Li, Long-Tao , Pan, Long-Qian et al. Lightweight, surface hydrophobic and flame-retardant polydimethylsiloxane foam composites coated with graphene oxide via interface engineering . | PROGRESS IN ORGANIC COATINGS , 2024 , 189 . |
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Herein, a novel flame retardant and smoke suppression auxiliaries was synthesized with the motivation of sustainability strategy. Porous diatomite (p-DIA) as a purely natural raw material and melamine formaldehyde-phytic acid (MFPA) as a synergist to produce DMFPA, which acts as the novel auxiliaries to endow epoxy resin (EP) with excellent fire safety. The thermal stability of EP composites with 15 wt% DMFPA was improved, as evidenced by a 31.0% reduction in its maximum thermal decomposition rate and an enhancement of residual char to 22.7 wt%. Moreover, EP composites also exhibited superior flame retardant and smoke reduction properties, as reflected by its peak heat release rate (PHRR), peak smoke release rate (PSPR), peak CO release rate and smoke factor (SF) that were 56.5%, 56.3%, 58.7% and 77.7% less than those of unmodified EP, respectively. These results correlated strongly with the powerful adsorption of smoke and flammable debris by porous diatomite, the physical barrier effect of the highly stable expanded char layer facilitated by DMFPA, the dilution effect of non-flammable gases resulted from pyrolysis by melamine and the free radicals quenching effect produced by phytic acid. (c) 2024 The Society of Powder Technology Japan. Published by Elsevier BV and The Society of Powder Technology Japan. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword ：
Diatomite Diatomite Flame retardancy Flame retardancy Polymer-matrix composites (PMCs) Polymer-matrix composites (PMCs) Smoke suppression Smoke suppression Sustainability Sustainability
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| GB/T 7714 | Luo, Jianjian , Zhou, Keqing , Tu, Bei et al. Fire-retardant, smoke-suppressive and sustainable diatomite-based auxiliaries for highly fire-resistant epoxy resin [J]. | ADVANCED POWDER TECHNOLOGY , 2024 , 35 (10) . |
| MLA | Luo, Jianjian et al. "Fire-retardant, smoke-suppressive and sustainable diatomite-based auxiliaries for highly fire-resistant epoxy resin" . | ADVANCED POWDER TECHNOLOGY 35 . 10 (2024) . |
| APA | Luo, Jianjian , Zhou, Keqing , Tu, Bei , Shi, Yongqian , Lu, Kaihua , Qian, Xiaodong et al. Fire-retardant, smoke-suppressive and sustainable diatomite-based auxiliaries for highly fire-resistant epoxy resin . | ADVANCED POWDER TECHNOLOGY , 2024 , 35 (10) . |
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