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学者姓名：施永乾
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The combination of electromagnetic interference (EMI) shielding performance and flame-retardant property is essential for applications in the field of electronics and electrics. To date, there have been few successful cases in achieving such portfolios, due to the different mechanisms and even mutual exclusivity of these two attributes. Herein, an ammonium polyphosphate@chitosan@carbon nanotube (APP@CS@MWCNT) core-multishell hybrid was synthesized by microencapsulation technology. Then, the hybrid was introduced into TPU matrix to fabricate TPU composites, acting as surface layer. Meanwhile, MXene film was used as intermediate layer to construct hierarchical TPU composites. The obtained results showed that after introduction of 1 wt% APP@CS@MWCNT hybrid, the peak of heat release rate (PHRR) and the peak of smoke produce rate (PSPR) of TPU composites decreased by 67.4% and 35.6%, respectively, compared with those of pure TPU. Owing to multiple reflection losses, interface polarization losses, and charge carrier movement-induced thermal dissipation, TPU/ 15AC@4M-SW exhibited the highest EMI shielding performance, and obtained shielding effectiveness values of 35.7 dB and 38.9 dB in X band and K band, respectively.
Keyword ：
Electromagnetic interference shielding Electromagnetic interference shielding Flame retardancy Flame retardancy Hierarchical structure Hierarchical structure MXene MXene Thermoplastic polyurethane Thermoplastic polyurethane
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| GB/T 7714 | Chen, Kexin , Wang, Hengrui , Shi, Yongqian et al. Realizing balanced flame retardancy and electromagnetic interference shielding in hierarchical elastomer nanocomposites [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 653 : 634-642 . |
| MLA | Chen, Kexin et al. "Realizing balanced flame retardancy and electromagnetic interference shielding in hierarchical elastomer nanocomposites" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 653 (2024) : 634-642 . |
| APA | Chen, Kexin , Wang, Hengrui , Shi, Yongqian , Liu, Miao , Feng, Yuezhan , Fu, Libi et al. Realizing balanced flame retardancy and electromagnetic interference shielding in hierarchical elastomer nanocomposites . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2024 , 653 , 634-642 . |
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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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High-performance polymers have proliferated in modern society across a variety of industries because of their low density, good chemical stability, and superior mechanical properties. However, while polymers are widely applied, frequent fire disasters induced by their intrinsic flammability have caused massive impacts on human beings, the economy, and the environment. Supramolecular chemistry has recently been intensively researched to provide fire retardancy for polymers via the physical barrier and char-catalyzing effects of supramolecular aggregates. In parallel, the noncovalent interactions between supramolecular and polymer chains, such as hydrogen bonding, pi-pi interactions, metal-ligand coordination, and synergistic interactions, can endow the matrix with enhanced mechanical strength. This makes it possible to integrate physical-chemical properties and noncovalent interactions into one supramolecular aggregate-based high-performance polymeric system on demand. However, fulfilling these promises needs more research. Here, we provide an overview of the latest research advances of fire-retardant and high-strength polymer materials based on supramolecular structures and interactions of aggregates. This work reviews their conceptual design, characterization, modification principles, performances, applications, and mechanisms. Finally, development challenges and perspectives on future research are also discussed. This work provides an overview of fire-retardant and high-strength polymer materials based on supramolecular structures and interactions of aggregates, including their conceptual design, characterization, modification principles, performances, applications, mechanisms, challenges, and future perspectives.image
Keyword ：
fire retardancy fire retardancy mechanical properties mechanical properties supramolecular aggregates supramolecular aggregates
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| GB/T 7714 | Liu, Lei , Zhu, Menghe , Feng, Jiabing et al. Fire-retardant and high-strength polymeric materials enabled by supramolecular aggregates [J]. | AGGREGATE , 2024 , 5 (2) . |
| MLA | Liu, Lei et al. "Fire-retardant and high-strength polymeric materials enabled by supramolecular aggregates" . | AGGREGATE 5 . 2 (2024) . |
| APA | Liu, Lei , Zhu, Menghe , Feng, Jiabing , Peng, Hong , Shi, Yongqian , Gao, Jiefeng et al. Fire-retardant and high-strength polymeric materials enabled by supramolecular aggregates . | AGGREGATE , 2024 , 5 (2) . |
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With the advantages of lightweight and low thermal conductivity properties, polymeric foams are widely employed as thermal insulation materials for energy-saving buildings but suffer from inherent flammability. Flame-retardant coatings hold great promise for improving the fire safety of these foams without deteriorating the mechanical-physical properties of the foam. In this work, four kinds of sulfur-based flame-retardant copolymers are synthesized via a facile radical copolymerization. The sulfur-containing monomers serve as flame-retardant agents including vinyl sulfonic acid sodium (SPS), ethylene sulfonic acid sodium (VS), and sodium p-styrene sulfonate (VSS). Additionally, 2-hydroxyethyl acrylate (HEA) and 4-hydroxybutyl acrylate are employed to enable a strong interface adhesion with polymeric foams through interfacial H-bonding. By using as-synthesized waterborne flame-retardant polymeric coating with a thickness of 600 mu m, the coated polyurethane foam (PUF) can achieve a desired V-0 rating during the vertical burning test with a high limiting oxygen index (LOI) of >31.5 vol%. By comparing these sulfur-containing polymeric fire-retardant coatings, poly(VS-co-HEA) coated PUF demonstrates the best interface adhesion capability and flame-retardant performance, with the lowest peak heat release rate of 166 kW m(-2) and the highest LOI of 36.4 vol%. This work provides new avenues for the design and performance optimization of advanced fire-retardant polymeric coatings.
Keyword ：
fire retardant fire retardant fire-retardant coatings fire-retardant coatings polyurethane foam polyurethane foam sulfur-containing polymers sulfur-containing polymers
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| GB/T 7714 | Fang, Yang , Ma, Zhewen , Wei, Dewang et al. Engineering Sulfur-Containing Polymeric Fire-Retardant Coatings for Fire-Safe Rigid Polyurethane Foam [J]. | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (14) . |
| MLA | Fang, Yang et al. "Engineering Sulfur-Containing Polymeric Fire-Retardant Coatings for Fire-Safe Rigid Polyurethane Foam" . | MACROMOLECULAR RAPID COMMUNICATIONS 45 . 14 (2024) . |
| APA | Fang, Yang , Ma, Zhewen , Wei, Dewang , Yu, Youming , Liu, Lei , Shi, Yongqian et al. Engineering Sulfur-Containing Polymeric Fire-Retardant Coatings for Fire-Safe Rigid Polyurethane Foam . | MACROMOLECULAR RAPID COMMUNICATIONS , 2024 , 45 (14) . |
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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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Polymeric materials usually present substantial hazards to human health and the environment as a consequence of their flammability which leads to the emission of a great deal of heat and toxic fumes. To address this issue, it is imperative to urgently enhance the flame retardancy of polymer materials. This study focuses on the synthesis of a novel gel-silica/polydopamine double-layer microencapsulated cobalt ions (Co2+) modified ammonium polyphosphate (APP-Co@PDA@Si) and its utilization in thermoplastic polyurethane (TPU) composites. The resulting TPU composite, containing 10.0 wt% APP-Co@PDA@Si, exhibited excellent flame-retardant properties, i.e. achieving a limiting oxygen index of 30.0 % and the V-0 grade in the UL-94 test. Furthermore, peak heat release rate, total heat release, peak smoke production rate, and total smoke release of the TPU composite were decreased by 88.51 %, 66.06 %, 61.73 %, and 74.01 %, respectively, in comparison to those of pure TPU. The enhanced fire safety of the TPU composite was attributed to the synergistic effect among Co2+ catalytic carbonization, the free radicals capture effect of APP, and the flame-retardant functions of PDA and silane. This innovative strategy proposed in this work holds great promise for improving the fire-resistance of TPU. © 2024 Elsevier Ltd
Keyword ：
Carbonization Carbonization Fire resistance Fire resistance Health hazards Health hazards Polyurethanes Polyurethanes Reinforced plastics Reinforced plastics Silica Silica Silicon Silicon Smoke Smoke Toxic materials Toxic materials
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| GB/T 7714 | Zhu, Yanjun , Wang, Hengrui , Fu, Libi et al. Interface engineering of multi-component core-shell flame retardant towards enhancing fire safety of thermoplastic polyurethane and mechanism investigation [J]. | Applied Materials Today , 2024 , 38 . |
| MLA | Zhu, Yanjun et al. "Interface engineering of multi-component core-shell flame retardant towards enhancing fire safety of thermoplastic polyurethane and mechanism investigation" . | Applied Materials Today 38 (2024) . |
| APA | Zhu, Yanjun , Wang, Hengrui , Fu, Libi , Xu, Peihui , Rao, Guanjie , Xiao, Wei et al. Interface engineering of multi-component core-shell flame retardant towards enhancing fire safety of thermoplastic polyurethane and mechanism investigation . | Applied Materials Today , 2024 , 38 . |
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Epoxy resin (EP) is one of the most versatile polymers. Nonetheless, its inherent flammability and brittleness severely limit its broad development. Moreover, existing additives make it difficult to meet the dual requirements of flame retardancy and toughening. Herein, a novel P/Fe/Si-doped porphyrin derivative (MTPD-Fe@SiO2) with nano-cauliflower structure was synthesized to develop advanced EP composites. MTPD-Fe@SiO2 exhibited good dispersion in EP matrix, which is attributed to the π-π interactions between the porphyrin and EP chains, as well as the mechanical interlocking of nano-cauliflower rough structure. Moreover, when 5 % of MTPD-Fe@SiO2 was incorporated, the tensile and flexural strengths of EP composites were increased by 48.1 % and 63.5 %, respectively, showing excellent toughening properties. Additionally, the maximum thermal degradation rate of EP/5 % MTPD-Fe@SiO2 was significantly reduced, indicating its superior thermal stability. Notably, compared with pure EP, the peak heat release rate and the peak smoke production rate of EP/5 % MTPD-Fe@SiO2 were decreased by 36.4 % and 43.6 %, while the residual char and limiting oxygen index increased to 30.9 % and 32.1 %, respectively. This was ascribed to the catalytic charring of transition metals and phosphates, the barrier effect of the solid carbon layer (Fe4(PO4)2O, SiO2), the trapping effect of phosphorus radicals and the dilution effect of incombustibles. This work provides a viable approach to solving the trade-off between refractoriness and mechanical performance. © 2024 Elsevier Ltd
Keyword ：
Additives Additives Degradation Degradation Economic and social effects Economic and social effects Epoxy resins Epoxy resins Fracture mechanics Fracture mechanics Iron Iron Iron compounds Iron compounds Porphyrins Porphyrins Silica Silica Silicon Silicon SiO2 nanoparticles SiO2 nanoparticles Smoke Smoke
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| GB/T 7714 | Yin, Lian , Zhang, Jiale , Liang, Zhuoran et al. A novel P/Fe/Si-doped porphyrin with excellent flame retardancy and ultrastrong toughening effect on epoxy resin [J]. | Composites Part A: Applied Science and Manufacturing , 2024 , 182 . |
| MLA | Yin, Lian et al. "A novel P/Fe/Si-doped porphyrin with excellent flame retardancy and ultrastrong toughening effect on epoxy resin" . | Composites Part A: Applied Science and Manufacturing 182 (2024) . |
| APA | Yin, Lian , Zhang, Jiale , Liang, Zhuoran , Shi, Yongqian , Lu, Kaihua , Zhou, Keqing . A novel P/Fe/Si-doped porphyrin with excellent flame retardancy and ultrastrong toughening effect on epoxy resin . | Composites Part A: Applied Science and Manufacturing , 2024 , 182 . |
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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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| 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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