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| 1 | Flame retarded polymer nanocomposites: Development,trend and future perspective显示文摘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 materials.Moreover,the addition of nano flame retardants can also improve the mechanical properties of polymer materials compared with the deterioration of traditional flame retardants.This paper reviews the recent development in the flame retardant field of polymer nanocomposites and also introduces the related research in our lab.The challenges and problems are discussed and the future development of flame retarded polymer nanocomposites is prospected. | MA HaiYun SONG PingAn FANG ZhengPing | 2011 | Science China Chemistry2011，54，2： | 4 |
| 2 | Recent advances in fire-retardant rigid polyurethane foam显示文摘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 types.The last decade has witnessed great progress of these three strategies,which enhance the fire safety of RPUF and maintain even improve the thermal insulation properties.This 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 RPUF.Moreover,the practical applications of the as-prepared flame-retardant RPUFs are highlighted.Finally,key challenges associated with these three kinds of flame retardants are discussed and future research opportunities are also proposed. | Menghe Zhu Zhewen Ma Lei Liu Jianzhong Zhang Siqi Huo Pingan Song | 2022 | Journal of Materials Science & Technology2022，，17： | 3 |
| 3 | Fire Intumescent,High-Temperature Resistant,Mechanically Flexible Graphene Oxide Network for Exceptional Fire Shielding and Ultra-Fast Fire Warning显示文摘Smart fire alarm sensor(FAS)materials with mechanically robust,excellent flame retardancy as well as ultra-sensitive temperature-responsive capability are highly attractive platforms for fire safety application.However,most reported FAS materials can hardly provide sensitive,continuous and reliable alarm signal output due to their undesirable temperature-responsive,flame-resistant and mechanical performances.To overcome these hurdles,herein,we utilize the multi-amino molecule,named HCPA,that can serve as triple-roles including cross-linker,fire retardant and reducing agent for decorating graphene oxide(GO)sheets and obtaining the GO/HCPA hybrid networks.Benefiting from the formation of multi-interactions in hybrid network,the optimized GO/HCPA network exhibits significant increment in mechanical strength,e.g.,tensile strength and toughness increase of~2.3and~5.7 times,respectively,compared to the control one.More importantly,based on P and N doping and promoting thermal reduction effect on GO network,the excellent flame retardancy(withstanding~1200℃flame attack),ultra-fast fire alarm response time(~0.6 s)and ultra-long alarming period(>600 s)are obtained,representing the best comprehensive performance of GO-based FAS counterparts.Furthermore,based on GO/HCPA network,the fireproof coating is constructed and applied in polymer foam and exhibited exceptional fire shielding performance.This work provides a new idea for designing and fabricating desirable FAS materials and fireproof coatings. | Cheng-Fei Cao Bin Yu Zuan-Yu Chen Yong-Xiang Qu Yu-Tong Li Yong-Qian Shi Zhe-Wen Ma Feng-Na Sun Qing-Hua Pan Long-Cheng Tang Pingan Song Hao Wang | 2022 | Nano-Micro Letters2022，14，6： | 3 |
| 4 | Recent advances in fire-retardant carbon-based polymeric nanocomposites through fighting free radicals显示文摘Polymeric materials are ubiquitously utilized in modern society and continuously improve quality of life.Unfortunately,most of them suffer from intrinsic flammability,significantly limiting their practical applications.Fundamentally,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 phase.The addition of free radical scavengers represents a promising and effective means to enhance the fire safety of polymeric materials.This 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 radicals.Their 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 detail.Following this,some key challenges associated with these free-radical capturers are discussed,and design strategies are also proposed.This 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. | Ting Sai Shiya Ran Zhenghong Guo Pingan Song Zhengping Fang | 2022 | SusMat2022，2，4： | 2 |
| 5 | Silicone/graphene oxide co-cross-linked aerogels with wide-temperature mechanical flexibility,super-hydrophobicity and flame resistance for exceptional thermal insulation and oil/water separation显示文摘Development of multifunctional and high-performance silicone aerogel is highly required for various promising applications.However,unstable cross-linking structure and poor thermal stability of silicone network as well as complicated processing restrict the practical use significantly.Herein,we report a facile and versatile ambient drying strategy to fabricate lightweight,wide-temperature flexible,super-hydrophobic and flame retardant silicone composite aerogels modified with low-content functionalized graphene oxide(FGO).After optimizing silane molecules,incorporation ofγ-aminopropyltriethoxysilane functionalization is found to promote the dispersion stability of GO during the hydrolysis-polymerization process and thus produce the formation of unique strip-like co-cross-linked network.Consequently,the aerogels containing∼2.0 wt%FGO not only possess good cyclic compressive stability under strain of 70%for 100 cycles and outstanding mechanical reliability in wide temperature range(from liquid nitrogen to 350℃),but also display excellent flame resistance and super-hydrophobicity.Further,the optimized silicone/FGO aerogels display exceptional thermal insulating performance superior to pure aerogel and hydrocarbon polymer foams,and they also show efficient oil absorption and separation capacity for var-ious solvents and oil from water.Clearly,this work provides a new route for the rational design and development of advanced silicone composite aerogels for multifunctional applications. | Zhao-Hui Zhang Zuan-Yu Chen Yi-Hao Tang Yu-Tong Li Dequan Ma Guo-Dong Zhang Rabah Boukherroub Cheng-Fei Cao Li-Xiu Gong Pingan Song Kun Cao Long-Cheng Tang | 2022 | Journal of Materials Science & Technology2022，，19： | 2 |
| 6 | Superhydrophobic self-extinguishing cotton fabrics for electromagnetic interference shielding and human motion detection显示文摘Multifunctional intelligent fire-safe cotton fabric promises next-generation fire-fighting uniform and sen-sor applications.However,cotton fabrics’hygroscopicity and intrinsic flammability significantly impede their potential applications in industries.Herein,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 elastomer.Compared 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 abilities.The presented work provides a facile and effective surface modification approach to generate multifunctional cotton fabrics with promising practical applications. | Lei Liu Zhewen Ma Menghe Zhu Lina Liu Jinfeng Dai Yongqian Shi Jiefeng Gao Toan Dinh Thanh Nguyen Long-Cheng Tang Pingan Song | 2023 | Journal of Materials Science & Technology2023，，1： | 2 |
| 7 | MEB-YOLO: An Efficient Vehicle Detection Method in Complex Traffic Road Scenes显示文摘Rapid and precise vehicle recognition and classification are essential for intelligent transportation systems,and road target detection is one of the most difficult tasks in the field of computer vision.The challenge in real-time road target detection is the ability to properly pinpoint relatively small vehicles in complicated environments.However,because road targets are prone to complicated backgrounds and sparse features,it is challenging to detect and identify vehicle kinds fast and reliably.We suggest a new vehicle detection model called MEB-YOLO,which combines Mosaic and MixUp data augmentation,Efficient Channel Attention(ECA)attention mechanism,Bidirectional Feature Pyramid Network(BiFPN)with You Only Look Once(YOLO)model,to overcome this problem.Four sections make up this model:Input,Backbone,Neck,and Prediction.First,to improve the detection dataset and strengthen the network,MixUp and Mosaic data improvement are used during the picture processing step.Second,an attention mechanism is introduced to the backbone network,which is Cross Stage Par-tial Darknet(CSPDarknet),to reduce the influence of irrelevant features in images.Third,to achieve more sophisticated feature fusion without increasing computing cost,the BiFPN structure is utilized to build the Neck network of the model.The final prediction results are then obtained using Decoupled Head.Experiments demonstrate that the proposed model outperforms several already available detection methods and delivers good detection results on the University at Albany DEtection and TRACking(UA-DETRAC)public dataset.It also enables effective vehicle detection on real traffic monitoring data.As a result,this technique is efficient for detecting road targets. | Yingkun Song Shunhe Hong Chentao Hu Pingan He Lingbing Tao Zhixin Tie Chengfu Ding | 2023 | Computers, Materials & Continua2023，，6： | 2 |
| 8 | Fabrication of exfoliated graphene-based polypropylene nanocomposites with enhanced mechanical and thermal properties显示文摘 | Song Pingan Cao Zhenhu Cai Yuanzheng | 2011 | Polymer2011，52，： | 1 |
| 9 | Effects of metal chelates on a novel oligomeric intumescent flame retardant system for polypropylene显示文摘 | Song Pingan Fang Zhengping Tong Lifang | 2008 | Journal of Analytical & Applied Pyrolysis2008，82，2： | 1 |
| 10 | Fabrication of exfoliated graphene-based polyprepylene nanocomposites with enhanced mechanical and thermal properties 显示文摘 | Song Pingan Cao Zhenhu Cai Yuanzheng | 2011 | Polymer2011，52，18： | 1 |
| 11 | Effects of metal chelates on a novel oligomeric intumescent flame retardant system for polypropylene显示文摘 | Pingan Song Zhengping Fang Lifang Tong Yongming Jin Fengzhu Lu | 2008 | Journal of Analytical and Applied Pyrolysis2008，，2： | 1 |
| 12 | Synthesis of a Novel Oligomeric Intu- mescent Flame Retardant and Its Application in Pol- ypropylene 显示文摘 | SONG PINGAN FANG ZHENGPING TONG LI- FANG | 2009 | Polymer Engineering & Science2009，49，7： | 1 |
| 13 | Atom-economic synthesis of an oligomeric P/N-containing fire retardant towards fire-retarding and mechanically robust polylactide biocomposites显示文摘Renewable and biodegradable polylactide (PLA) has excellent mechanical strength but is highly flammable which restricts its practical applications. Many phosphorus/nitrogen (P/N)-based flame retardants are ef- fective in PLA, but their high addition loading usually decreases the mechanical strength of the PLA bulk. For polyphosphoramides, despite high fire-retardant efficiency, their chemical synthesis often generates chemical wastes as byproducts. Herein, we report an atom-economic and highly efficient oligomeric P/N fire retardant (APN) prepared using a mild Michael addition polymerization with no byproducts. Using only 3 wt% APN, the resulting PLA exhibits desired fire retardancy including a UL-94 V-0 rating and a limiting oxygen index of 37.6%. Furthermore, the toughness of the fire-retardant PLA increases by 85% compared to pure PLA, with both tensile strength and thermal stability preserved. This work offers an atom-economic strategy for synthesizing highly efficient P/N fire retardants for use in the creation of fire-resistant PLA with robust mechanical properties. | Jiabing Feng Yixia Lu Hongyan Xie Yan Zhang Siqi Huo Xiaohuan Liu Matt Flynn Zhiguang Xu Paulomi Burey Mark Lynch Hao Wang Pingan Song | 2023 | Journal of Materials Science & Technology2023，，29： | 1 |
| 14 | Effect of re- active compatibilization on the morphological, thermal, mechanical, and rheological properties of intumescent flame-retardant polypropylene 显示文摘 | SONG Pingan SHEN Yu DU Baoxian | 2009 | Appl Mater Interface2009，1，2： | 1 |
| 15 | Effects of metal chelates on a novel oligomeric intumescent flame retardant system for polypropylene显示文摘 | Song Pingan Fang Zhengping Tong Lifang | 2008 | Journal of Analytical and Applied Pyrolysis2008，82，2： | 1 |
| 16 | Fabrication of dendrimer-like fullerene (C-60)-decorated oligomeric intumescent flame retardant for reducing the thermal oxidation and flammability of polypropylene nanocomposites显示文摘 | Song Pingan Liu Hui Shen Yu | 2009 | Journal of Materials Chemistry2009，19，9： | 1 |
| 17 | Synthesis of a Novel Oligomeric Intumescent Flame Retardant and its Application in Polypropylene显示文摘 | Song Pingan Fang Zhengping Tong Lifang | 2009 | Polymer Engineering and Science2009，49，7： | 1 |
| 18 | Fabrication of dendrimer- like fullerene (C-60)-decorated oligomeric intumescent flame retardant for reducing the thermal oxidation and flammability of polypropylene nanocomposites 显示文摘 | SONG Pingan LIU Hui SHEN Yu | 2009 | Journal of Materials Chemistry2009，19，9： | 1 |
| 19 | Flexible and flame-retarding phosphorylated MXene/polypropylene composites for efficient electromagnetic interference shielding显示文摘Flame-retardant composites with high electromagnetic interference(EMI)shielding performance are desirable for electronic device packaging.Despite 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 MXene.Herein,phosphorylated MXene/polypropylene(PP)composites are prepared by coating phosphorylated MXene on PP fabric followed by spraying polyethylenimine(PEI)and hot-pressing.The phosphorylated MXene proves to be more durable against oxidation than pure MXene due to the protection effect of polyphosphates.Upon hot-pressing,melted PP fibers are fused together at their contact points and thus as-prepared composites are bi-continuous with two interpenetrating phases.The 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%,respectively.In 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~400μm.The as-developed PP/MXene composites hold great promise for reliable protection of next-generation electronic devices working in complex environments. | Tingting Tang Shanchi Wang Yue Jiang Zhiguang Xu Yu Chen Tianshu Peng Fawad Khan Jiabing Feng Pingan Song Yan Zhao | 2022 | Journal of Materials Science & Technology2022，，16： | 1 |
| 20 | Synthe- sis of a novel oligorneric intumescent flame retardant and its application in polypropylene显示文摘 | Song Pingan Fang Zhengping Tong Lifang | 2009 | Polym Eng Sci2009，49，7： | 1 |
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