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Journal of Materials Science & Technology 2024年第3期170卷 1-10页

作者： Xin Wen Cui Li Hui Liu Guohua Fan Yanan Tang Chuncheng Hao Lili Ma pingan song Institute of Advanced Electrical Materials College of Materials Science and EngineeringQingdao University of Science and TechnologyQingdao 266042China Center for Future Materials University of Southern QueenslandSpringfieldQLD 4300Australia School of Agriculture and Environmental Science University of Southern QueenslandSpringfieldQLD 4300Australia

Recently great effort s have been focused on designing high-performance microwave absorbers using sustainable biomass resources,but there remains a lack of green and efficient fabrication ***,inspired by natural porous character of biomass waste,we demonstrated a green one-step route to convert waste coffee grounds into porous C/Fe hybrids,and further explored their potential applications for broadband and high-efficiency microwave *** this design,the WCG-20-750(incorporated 20 wt%Fe(C_(5)H_(7)O_(2))_(3)catalyst and carbonized at 750℃)exhibited porous microstructure with the highest char yield of 55.45 wt%.Furthermore,the as-prepared C/Fe hybrids from WCG-20-750 displayed excellent microwave absorption ***,the minimum reflection loss(RL_(min))reached to-52.86 dB and the widest effective absorption bandwidth(EAB)was 6.40 GHz at the thickness of 3.0 *** work provides an economically viable and environmentally friendly strategy to convert biomass wastes into value-added microwave absorbers,ultimately making contributions to the upcycling of renewable biomass resources and the fostering of sustainable environment.

关键词： Waste recycling Microwave absorption Green carbonization Porous carbon Biomass

Fire-retardant, anti-dripping, biodegradable and biobased polyurethane elastomers enabled by hydrogen-bonding with cellulose nanocrystals

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Nano Research 2024年第3期17卷 2186-2194页

作者： Yijiao Xue Tianchen Zhang Hong Peng Zhewen Ma Meng Zhang Mark Lynch Toan Dinh Zhezhe Zhou Yonghong Zhou pingan song Institute of Chemical Industry of Forest Products Chinese Academy of Forestry(CAF)Nanjing 210042China School of Chemical Engineering The University of QueenslandBrisbaneQld 4072Australia Department of Polymer Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China School of Agriculture and Environmental Science University of Southern QueenslandToowoombaQld 4300Australia Centre for Future Materials University of Southern QueenslandToowoombaQld 4300Australia

Thermoplastic polyurethane(PU)elastomers have attracted significant attention because of their many important industrial ***,the creation of fire-retardant and anti-dripping PU elastomers has remained a grant challenge due to the lack of crosslinking and weak interchain ***,we report a mechanically robust,biodegradable,fire-retardant,and anti-dripping biobased PU elastomer with excellent biodegradability using an abietic acid-based compound as hard segments and polycaprolactone diol(PCL)as soft segments,followed by physically crosslinking with cellulose nanocrystals(CNC)through dynamic *** resultant elastomer shows the balanced mechanical and fire-retardant properties,e.g.,a tensile strength and break strain of 9.1 MPa and 560%,a self-extinguishing ability(V-0 rating in UL-94 testing),and an anti-dripping ***,the as-developed PU can be completely degraded in 1.0 wt.%lipase solution at 37℃ in 60 days,arising from the catalytic and wicking effect of CNC on PU *** work provides an innovative and versatile strategy for constructing robust,fire-retardant,anti-dripping,and biodegradable PU elastomers,which hold great promise for practical applications in electronic and automobile sectors.

关键词： polyurethane elastomers cellulose nanocrystals fire retardancy anti-dripping biodegradation

Recent advances in fire-retardant rigid polyurethane foam

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Journal of Materials Science & Technology 2022年第17期112卷 315-328页

作者： Menghe Zhu Zhewen Ma Lei Liu Jianzhong Zhang Siqi Huo pingan song Materials Engineering Zhejiang A&F UniversityHangzhou311300China School of Materials Science and Engineering Tongji UniversityShanghai 201804China Laboratory of Polymer Materials and Engineering NingboTech UniversityNingbo 315100China Centre for Future Materials University of Southern QueenslandSpringfield 4300Australia

Driven by global environmental concerns,many efforts have been made to develop halogen-free flame retardants for rigid polyurethane foam(RPUF).These environmentally benign flame retardants are mainly divided into(i)reactive,(ii)additive,and(iii)coating *** last decade has witnessed great progress of these three strategies,which enhance the fire safety of RPUF and maintain even improve the thermal insulation *** comprehensive review focuses on the up-to-date design of the reactive,additive,and coating flame retardants,and their effects on flame retardancy and thermal conductivity of ***,the practical applications of the as-prepared flame-retardant RPUFs are ***,key challenges associated with these three kinds of flame retardants are discussed and future research opportunities are also proposed.

关键词： Rigid polyurethane foam Flame retardancy Thermal conductivity Halogen-free flame retardants

Multi-hierarchical flexible composites towards superior fire safety and electromagnetic interference shielding

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Nano Research 2022年第10期15卷 9531-9543页

作者： Kexin Chen Miao Liu Yongqian Shi Hengrui Wang Libi Fu Yuezhan Feng pingan song College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350116China College of Civil Engineering Fuzhou UniversityFuzhou 350116China Key Laboratory of Materials Processing and Mold Ministry of Education National Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Centre for Future Materials University of Southern QueenslandSpringfieldQLD 4350Australia

Vast amounts of electromagnetic waves are generated in modern society,which severely endanger human health and cause instrument ***,practical application of electromagnetic shielding polymer-based materials aspires to flame ***,cellulose acetate butyrate modified ammonium polyphosphate(CAPP)and phosphoramide flame retardant decorated short carbon fiber(MSCF)were synthesized separately and then simultaneously blended into thermoplastic polyurethane(TPU)to prepare a series of flame retardant TPU ***,the multi-hierarchical flexible TPU/CAPP/MSCF composites were fabricated via our self-developed air-assisted thermocompression *** results revealed that the TPU/CAPP/MSCF showed improved thermal ***,the TPU/10CA/2.5F incorporated with 10.0 wt.%CAPP and 2.5 wt.%MSCF respectively exhibited 77.8%and 58.6%reduction in peak of heat release rate(PHRR)and total heat release(THR),compared to those of pure *** addition,the TPU/10CA/2.5F passed the UL-94 V-0 rating test and achieved a higher limit oxygen index(LOI)(27.3%)than pure TPU(21.7%).In the case of electromagnetic interference shielding effectiveness(EMI SE),the TPU/10CA/10.0F-SW with 10 wt.%CAPP and 10 wt.%MSCF dispersed in the surface layer and Ti_(3)C_(2)Tx MXene intercalated in the interlayer exhibited EMI SE of 43.8 dB in X band and 32.0 dB in K ***,synergistic effect between CAPP and MSCF together with scattered and multiply adsorbed effect of MSCF,MXene and CAPP was responsible for fire safety and EMI shielding property *** work provides a fascinating strategy for fabricating multi-hierarchical flexible TPU composites with outstanding flame retardant and EMI shielding performances.

关键词： MXene multi-hierarchical structure flame retardancy electromagnetic interference shielding air-assisted thermocompression

Recent advances in nacre-inspired anisotropic thermally conductive polymeric nanocomposites

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Nano Research 2023年第1期16卷 1362-1386页

作者： Qiang Chen Zhewen Ma Mingchao Wang Zhengzhou Wang Jiabing Feng Venkata Chevali pingan song Department of Polymer Materials School of Materials Science and EngineeringTongji UniversityShanghai 201804China Key Laboratory of Advanced Civil Engineering Materials(Tongji University) Ministry of EducationShanghai 201804China Centre for Theoretical and Computational Molecular Science Australian Institute for Bioengineering and NanotechnologyThe University of QueenslandSt LuciaQLD 4072Australia Centre for Future Materials University of Southern QueenslandSpringfield 4300Australia

The rapid development of miniaturized,highly integrated,and multifunctional modern electronic devices has generated a growing demand for anisotropic heat dissipation in polymer nanocomposites for thermal management *** anisotropic thermally conductive multifunctional polymer nanocomposites use bio-inspired structural design based on natural nacre,which is the gold standard for ***,to date,a comprehensive review and critique on the highly-anisotropic thermal conduction of nacre-mimetic nanocomposites is *** such,this extensive review of the nacre-inspired highly anisotropic thermal management nanocomposites summarizes the current design strategies,and explains the thermal conduction mechanisms,and factors affecting anisotropic thermal ***,the practical applications of the asprepared nacre-inspired highly anisotropic nanocomposites are ***,the key challenges and potential solution strategies associated with these nacre-inspired highly anisotropic nanocomposites are discussed and outlooks for future research opportunities are also proposed.

关键词： nacre-inspired structure high anisotropy thermal conductivity nanocomposites

Recent advances in fire-retardant carbon-based polymeric nanocomposites through fighting free radicals

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SusMat 2022年第4期2卷 411-434页

作者： Ting Sai Shiya Ran Zhenghong Guo pingan song Zhengping Fang Laboratory of Polymer Materials and Engineering NingboTech UniversityNingboChina MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhouChina Center for Future Materials University of Southern QueenslandSpringfield CentralQueenslandAustralia School of Agriculture and Environmental Science University of Southern QueenslandSpringfield CentralQueenslandAustralia

Polymeric materials are ubiquitously utilized in modern society and continuously improve quality of ***,most of them suffer from intrinsic flammability,significantly limiting their practical ***,free-radical reaction is a critical“trigger”for their thermal pyrolysis and following combustion process regardless of the anaerobic thermal pyrolysis in the condensed phase or aerobic combustion of polymers in the gaseous *** addition of free radical scavengers represents a promising and effective means to enhance the fire safety of polymeric *** review aims to offer a state-of-the-art overview on the creation of fire-retardant polymeric nanocomposites by adding fire retardants with an ability to trap free *** specific modes of action(condensed-phase action,gaseous-phase action,and dual-phases action)and performances in some typical polymers are reviewed and discussed in *** this,some key challenges associated with these free-radical capturers are discussed,and design strategies are also *** review provides some insights into the modes of action of free radical capturing agents and paves the avenue for the design of advanced fire-retardant polymeric nanocomposites for expanded real-world applications in industries.

关键词： fire retardants free radical capturers polymer nanocomposites thermal stability

Flame retarded polymer nanocomposites: Development,trend and future perspective

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Science China Chemistry 2011年第2期54卷 302-313页

作者： MA HaiYun song pingan FANG ZhengPing MOE Key Laboratory of Macromolecular Synthesis and Functionalization Institute of Polymer Composites Zhejiang University Hangzhou 310027 China Laboratory of Polymer Matertals and Engmeering Nmgbo lnstttute of Technology Zhejiang University Ningbo 315100 China Department of Biological and Materials Science University of Michigan Ann Arbor 48109 USA

Polymer nanocomposites are a new class of flame retarded materials which have attracted much attention and considered as a revolutionary new flame retardant approach.A very small amount of nano flame retardants (normally < 5 wt%) can significantly reduce the heat release rate (HRR) and smoke emission (SEA) during the combustion of polymer ***,the addition of nano flame retardants can also improve the mechanical properties of polymer materials compared with the deterioration of traditional flame *** paper reviews the recent development in the flame retardant field of polymer nanocomposites and also introduces the related research in our *** challenges and problems are discussed and the future development of flame retarded polymer nanocomposites is prospected.

关键词： nanocomposite layered silicate carbon nanotubes fullerene flame retardancy

Flexible and flame-retarding phosphorylated MXene/polypropylene composites for efficient electromagnetic interference shielding

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Journal of Materials Science & Technology 2022年第16期111卷 66-75页

作者： Tingting Tang Shanchi Wang Yue Jiang Zhiguang Xu Yu Chen Tianshu Peng Fawad Khan Jiabing Feng pingan song Yan Zhao College of Textile and Clothing Engineering Soochow UniversitySuzhou 215123China China-Australia Institute for Advanced Materials and Manufacturing Jiaxing UniversityJiaxing 314001China AECC Beijing Institute of Aeronautical Materials Beijing 100095China Centre for Future Materials University of Southern QueenslandSpringfield CentralQLD 4300Australia

Flame-retardant composites with high electromagnetic interference(EMI)shielding performance are desirable for electronic device *** great potential of MXene for high EMI,it still remains a great challenge to develop high-performance flame-retardant polymer/MXene composites with excellent EMI shielding effectiveness because of the poor oxidative stability of ***,phosphorylated MXene/polypropylene(PP)composites are prepared by coating phosphorylated MXene on PP fabric followed by spraying polyethylenimine(PEI)and *** phosphorylated MXene proves to be more durable against oxidation than pure MXene due to the protection effect of *** hot-pressing,melted PP fibers are fused together at their contact points and thus as-prepared composites are bi-continuous with two interpenetrating *** composites show significantly improved thermal stability and flame retardancy relative to pure PP,with a low total heat release(THR)of 3.7 kJ/g and a heat release rate(HRR)of 50.0 W/g,which are reduced by 78%and 87%,*** addition,the composites exhibit a high electrical conductivity of~36,700 S/m and an EMI shielding performance of~90 d B over the whole frequency range of 8–12 GHz with a thickness of~400μ*** as-developed PP/MXene composites hold great promise for reliable protection of next-generation electronic devices working in complex environments.

关键词： MXene Flame retardancy Polypropylene composite EMI shielding

High-performance flexible nanocomposites with superior fire safety and ultra-efficient electromagnetic interference shielding

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Journal of Materials Science & Technology 2023年第35期166卷 133-144页

作者： Miao Liu Kexin Chen Yongqian Shi Hengrui Wang Shijie Wu Ruizhe Huang Yuezhan Feng Longcheng Tang Xiaohuan Liu pingan song College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350116China Key Laboratory of Materials Processing and Mold Ministry of Education National Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education College of MaterialChemistry and Chemical EngineeringHangzhou Normal UniversityHangzhou 311121China College of Life Science Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and ConservationTaizhou UniversityTaizhou 318000China Centre for Future Materials University of Southern QueenslandSpringfieldQLD 4300Australia School of Agriculture and Environmental Science University of Southern QueenslandSpringfield4300Australia

High-performance multifunctional polymeric materials integrated with high fire safety,excel-lent mechanical performances and electromagnetic interference(EMI)shielding properties have great prospects in practical ***,designing highly fire-safe and mechanically ro-bust EMI shielding nanocomposites remains a great ***,hierarchical thermoplastic polyurethane/cyclophosphazene functionalized titanium carbide/carbon fiber fabric(TPU/CP-Ti_(3)C_(2)T_(x)/CF)nanocomposites with high fire safety and mechanical strength and toughness were prepared through the methods of melt blending,layer-by-layer stacking and *** TPU/CP-Ti_(3)C_(2)T_(x)showed improved thermal ***,the peak of heat release rate and total heat release of the hi-erarchical TPU sample containing 4.0 wt.%CP-Ti_(3)C_(2)T_(x)were respectively reduced by 64.4%and 31.8%relative to those of pure TPU,which were far higher than those of other TPU-based *** averaged EMI shielding effectiveness value of the hierarchical TPU/CP-Ti_(3)C_(2)T_(x)-2.0/CF nanocomposite reached 30.0 dB,which could satisfy the requirement for commercial ***,the ten-sile strength of TPU/CP-Ti_(3)C_(2)T_(x)-2.0/CF achieved 43.2 MPa,and the ductility and toughness increased by 28.4%and 84.3%respectively compared to those of TPU/*** hydrogen bonding in combination with catalytic carbonization of CP-Ti_(3)C_(2)T_(x)nanosheets and continuous conductive network of CF were re-sponsible for the superior fire safety,excellent EMI shielding and outstanding mechanical *** work offers a promising strategy to prepare multifunctional TPU-based nanocomposites,which have the potential for large-scale application in the fields of electronics,electrical equipment and 5 G facilities.

关键词： Hierarchical structure Fire safety Electromagnetic interference shielding Mechanical strength and toughness Air assisted thermocompression

Superhydrophobic self-extinguishing cotton fabrics for electromagnetic interference shielding and human motion detection

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Journal of Materials Science & Technology 2023年第1期132卷 59-68页

作者： Lei Liu Zhewen Ma Menghe Zhu Lina Liu Jinfeng Dai Yongqian Shi Jiefeng Gao Toan Dinh Thanh Nguyen Long-Cheng Tang pingan song College of Environment and Safety Engineering Qingdao University of Science and TechnologyQingdao 266061China School of Chemistry and Materials Engineering Zhejiang A&F UniversityHangzhou 311300China College of Environment and Safety Engineering Fuzhou UniversityFuzhou 350116China School of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002China Centre for Future Materials University of Southern QueenslandSpringfield 4300Australia School of Engineering University of Southern QueenslandSpringfield 4300Australia College of Material Chemistry and Chemical EngineeringKey Laboratory of Organosilicon Chemistry and Material Technology of MoEHangzhou Normal UniversityHangzhou 311121China School of Agriculture and Environmental Science University of Southern QueenslandSpringfield 4300Australia

Multifunctional intelligent fire-safe cotton fabric promises next-generation fire-fighting uniform and sen-sor ***,cotton fabrics’hygroscopicity and intrinsic flammability significantly impede their potential applications in ***,we report a superhydrophobic fireproof cotton fabric(PEI-APP-PEI-MXene)generated via sequential layer-by-layer deposition of polyethyleneimine(PEI),am-monium polyphosphate(APP),and titanium carbide(MXene),followed by hydrophobic treatment with silicone *** to untreated cotton,the treated cotton fabric with 10 polymolecular layers exhibits∼43%and∼42%reductions in the peak heat release rate and total heat release,respectively,a desired UL-94 V-0 rating,and a high limiting oxygen index(LOI)value of 39.5 vol.%.In addition to that,the treated fabrics displayed improved electromagnetic interference(EMI)shielding and motion-sensing *** presented work provides a facile and effective surface modification approach to generate multifunctional cotton fabrics with promising practical applications.

关键词： Cotton fabric Super-hydrophobicity Flame retardancy Electromagnetic interference shielding Motion sensor MXene