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Carbon Fibers Decorated by Polyelectrolyte Complexes toward Their Epoxy Resin Composites with High fire safety

Chinese Journal of Polymer Science 2018年第12期36卷 1375-1384页

作者： Xiao-Hui Shi Li Chen Bo-Wen Liu Jia-Wei Long Ying-Jun Xu Yu-Zhong Wang School of Chemical Engineering National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan) State Key Laboratory of Polymer Materials Engineering Sichuan University Chengdu 610064 China

The achievement of both robust fire-safety and mechanical properties is of vital requirement for carbon fiber （CF） composites. To this end, a facile interracial strategy for fabricating flame-retardant carbon fibers decorated by bio-based polyelectrolyte complexes （PEC） consisting of chitosan （CH） and ammonium polyphosphate （APP） was developed, and its corresponding fire-retarded epoxy resin composites （EP/（PEC@CF）） without any other additional flame retardants were prepared. The decorated CFs were characterized by SEM- EDX, XPS and XRD, indicating that the flame-retardant PEC coating was successfully constructed on the surface of CF. Thanks to the nitrogen- and phosphorous-containing PEC, the resulting composites exhibited excellent flame retardancy as the limiting oxygen index （LOI） increased from 31.0% of EP/CF to 40.5% and UL-94 V-0 rating was achieved with only 8.1 wt% PEC. EP/（PEC8.1@CF） also performed well in cone calorimetry with the decrease of peak-heat release rate （PHRR） and smoke production rate （SPR） by 50.0% and 30.4%, respectively, and the value of fire growth rate （FIGRA） was also reduced to 3.41 kW·m-2- s-1 from 4.84 kW· m-2· s-1, suggesting a considerably enhanced fire safety. Furthermore, SEM images of the burning residues revealed that the PEC coating exhibited the dominant flame-retardant activity in condensed phase via the formation of compact phosphorus-rich char. In addition, the impact strength of the composite was improved, together with no obvious deterioration of flexural properties and glass transition temperature. Taking advantage of the features, the PEC-decorated carbon fibers and the relevant composites fabricated by the cost-effective and facile strategy would bring more chances for widespread applications.

关键词： fire safety Carbon fiber composites Epoxy resin Polyelectrolyte complexes

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An exploratory study on road tunnel with semi-transparent photovoltaic canopy-From energy saving and fire safety perspectives

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Building Simulation 2022年第4期15卷 537-548页

作者： Dahai Qi Senwen Yang Chang Shu Xin Zhang Liangzhu(Leon)Wang Andreas Athienitis Department of Civil and Building Engineering Universite de Sherbrooke2500boul.de I'UniversiteSherbrookeQuebec J1K2R1Canada Centre for Zero Energy Building Studies Department of BuildingCivil and Environmental EngineeringConcordia University1455 de Maisonneuve Blvd.WestMontrealQuebec H3G 1M8Canada

Road tunnels consume a large amount of energy,especially in the Canadian cold climate,where the roads are heated electrically or deicing during the *** a more sustainable and resilient road tunnel energy system,we conducted an exploratory study on installing a semi-transparent photovoltaic(STPV)canopy at the entrances and exits of a tunnel under a *** proposed system generates solar-powered electricity,improves thermal and visual conditions,and reduces energy *** this study,field measurements of road surface temperature and air temperature were conducted,and numerical simulations with and without STPV were performed to study air and road surface temperatures under different traffic *** field measurements show the road surface temperatures are higher than the air temperature on *** interior air and road surface temperature were measured to be above 0°C,even though the outdoor temperature is far below 0°C,thus significantly reducing the need for deicing in winter using *** simulations show that the air and surface temperatures elevate due to the solar transmission heat through the STPV canopy,thus reducing deicing energy consumption *** fire safety analysis also showed that the proposed system's top opening should be located near the tunnel entrance instead of the canopy entrance for better smoke exhaust during a fire.

关键词： STPV road tunnel fire safety energy efficiency cold climate

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Recent Progress in Two-dimensional Nanomaterials Following Graphene for Improving fire safety of Polymer(Nano)composites

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Chinese Journal of Polymer Science 2021年第8期39卷 935-956,I0004页

作者： Wei Cai Bi-Bo Wang Xin Wang Yu-Lu Zhu Zhao-Xin Li Zhou-Mei Xu Lei Song Wei-Zhao Hua Yuan Hua State Key Laboratory of fire Science University of Science and Technology of ChinaHefei 230000China Suzhou Advanced Research Institute University of Science and Technology of ChinaSuzhou 215000China

The high fire safety of polymer nanocomposites is being pursued by research institutions around the *** addition to intrinsic flame retardancy strategy,the additive-type flame retardants have attracted increasing attention due to low commercial cost and easy fabrication ***,traditional additive-type flame retardants usually need high addition amount to achieve a desirable effect which causes many side-effects on the overall performance of polymer materials,such as deteriorated mechanical property and *** present two-dimensional(2D)nanomaterials have also been applied to reduce the fire hazards of polymer(nano)composites with the coupling of barrier function and catalysis as well as carbonization *** though most research work mainly focus on graphene-based flame retardants,more emerging two-dimensional nanomaterials are taking away research attention,due to their complementary and unique properties,mainly including hexagonal boron nitride(h-BN),molybdenum disulfide(MoS2),metal organic frameworks(MOF),carbon nitride(CN),titanium carbide(MXene)and black phosphorene(BP).In this review,except for graphene,the flame retardant mechanism involving different layered nanomaterials are also ***,the functionalization method and flame retardancy effect of different layered nanomaterials are emphatically discussed for offering an effective reference to solve the fire hazards of polymer ***,this work objectively evaluates the practical significance of polymer/layered nanomaterials composites for industrial application.

关键词： Polymer(nano)composites Layered nanomaterials fire safety Flame retardant mechanism

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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

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Application of Computer Integration Technology for fire safety Analysis

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Tsinghua Science and Technology 2008年第S1期13卷 387-392页

作者：史健勇李引擎陈虎传 Department of Civil Engineering Shanghai Jiao Tong University Institute of Building fire Research China Academy of Building Research

With the development of information technology, the fire safety assessment of whole structure or region based on the computer simulation has become a hot topic. However, traditionally, the concerned studies are performed separately for different objectives and difficult to perform an overall evaluation. A new multi-dimensional integration model and methodology for fire safety assessment were presented and two newly developed integrated systems were introduced to demonstrate the function of integration simulation technology in this paper. The first one is the analysis on the fire-resistant behaviors of whole structure under real fire loads. The second one is the study on fire evaluation and emergency rescue of campus based on geography information technology (GIS). Some practical examples are presented to illuminate the advantages of computer integration technology on fire safety assessment and emphasize some problems in the simulation. The results show that the multi-dimensional integration model offers a new way and platform for the integrating fire safety assessment of whole structure or region, and the integrated software developed is the useful engineering tools for cost-saving and safe design.

关键词： fire simulation large space building fire safety steel structure integrated system

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fire safety Analysis for the Non-provision of Sprinkler System in a Treatment Room

Fire Safety Analysis for the Non-provision of Sprinkler Syst...

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首届风险分析与危机反应国际学术研讨会

作者： W.K.KWOK Arch ＆ Fire Professional（Int’l） Ltd

＜正＞fire safety has become one of the major concerns not only for the government but also for the public. Hospitals are examples of cases where the safety is considered *** order to assess the safety level,fire risk analysis is an essential way for this type of building.A case study on a treatment room without provision of sprinkler system was carried *** objective of this study was to evaluate the fire risk level of a treatment room without provision of sprinkler system and to propose enhanced fire safety measures to meet the performance requirements of building *** tree analysis was adopted to identify the probability of fire spreading out of *** the other hand,the consequence of fire and smoke spread was also studied using CFD simulation. The results indicated that the enhanced fire safety design may serve to maintain the fire safety levels of the treatment room at reasonable levels.

关键词： fire safety Fault Tree Analysis fire Risk Assessment CFD Simulation

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High-fire-safety thermoplastic polyester constructed by novel sulfonate with benzimidazole structure

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Science China Materials 2021年第8期64卷 2067-2080页

作者： Wan-Shou Wu Ping-Hui Duan Yin-Long Wang Li Chen Xiu-Li Wang Yu-Zhong Wang The Collaborative Innovation Center for Eco-Friendly and fire-safety Polymeric Materials(MoE) State Key Laboratory of Polymer Materials EngineeringNational Engineering Laboratory of Eco-Friendly Polymeric Materials(Sichuan)College of ChemistrySichuan UniversityChengdu 610064China

The flammability of thermoplastic polyesters and the subsequent heavy smoke and severe melt drips formed after ignition are the main obstacles hindering their widespread application. In this study, a novel ionic monomer containing sulfonate and benzimidazole was synthesized and incorporated into the main chain of poly(ethylene terephthalate)(PET, used as a model thermoplastic polyester) by melt copolymerization. The synergetic effect of ionic aggregation and carbonization endowed the obtained copolyester with high melt viscosity and excellent char-forming ability at high temperatures. The copolyester having a monomer content of 8 mol.% easily achieved the Underwriters Laboratories Inc 94(UL-94) V-0 flammability rating without dripping and the limiting oxygen index value reached 33.0 vol.%.In addition, the total smoke production, peak heat release rate,and maximum CO production decreased by 45.2%, 60.5%, and75.0%, respectively, compared with those of PET. In addition,the copolyester was spinnable, and showed greater adsorption efficiency(99.6%) for a cationic dye from solution compared to PET(6.5%), demonstrating the excellent affinity of the copolyester for the cationic dye. The obtained inherently firesafe PET copolyester has great potential for applications in flame retardant textiles, artwork base materials, and decorative materials for transportation applications.

关键词： fire safety thermoplastic polyester cross-linking network carbonization

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On Offshore fire safety Research

On Offshore Fire Safety Research

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2003火灾科学与消防工程国际学术会议

作者： PEDERSEN Kjell Schmidt Norwegian fire Research Laboratory Ltd. （NBL） S1NTEF 7465 Trondheim Norway

＜正＞ Some important results from offshore fire safety research concerning fire characteristics and mitigation in Norway during the last 15 years have been in troduced.

关键词： offshore oil production fire safety heat loads fire mitigation prediction models

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Research on Comprehensive Evaluation for fire safety of High-Rise Buildings

Research on Comprehensive Evaluation for Fire Safety of High...

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2004安全科学与技术国际会议

作者： WU Lizhi1 2 DUAN Yaoyong2 GAO Yinmin1 & ZHAO Minxue2 (1 School of Management & Economics Beijing Institute of Technology Beijing 100081 China) (2 Department of fire Protection Engineering Armed Police Force Academy Langfang 065000 Hebei China)

With the continuous development of economy and building technology, there are more and more high-rise buildings in our country. Therefore, the fire safety of high-rise buildings becomes a tedious work

关键词： high-rise building index system evaluation method fire safety fuzzy comprehensive evaluation

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Bio-inspired surface manipulation of halloysite nanotubes for highperformance flame retardant polylactic acid nanocomposites

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Nano Research 2024年第3期17卷 1595-1606页

作者： Yaru Sun Bin Yu Yan Liu Junbo Yan Zixi Xu Bo Cheng Fenglei Huang Jun Wang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China State Key Laboratory of fire Science University of Science and Technology of ChinaHefei 230026China Beijing Institute of Technology Chongqing Innovation Center Chongqing 401120China National Engineering Research Center of Flame Retardant Materials Beijing Institute of TechnologyBeijing 100081China

High-performance flame-retardant polylactic acid(PLA)bio-composites based on biobased fillers to meet usage requirements represents a promising direction for creating a sustainable *** flame retardant PLA composites have been reported extensively,it still remains a huge challenge to develop mechanically *** flame retardant PLA composites due to plastication effect of organic flame retardants and poor compatibility of organic fillers with the matrix lead to the severe deterioration in mechanical *** this work,a bio-inspired surface manipulation strategy for halloysite nanotubes(HNTs)was proposed via a facile and green self-assembly *** structure and morphology of bio-inspired HNTs(b-HNTs)proved that biomass nanofillers(PA-NA-Fe)grew well both within the lumen and on the surface of *** growth of biomass on the inner and outer surfaces of HNTs was inspired from wooden towards enhancing the interface compatibility and imparting multi-properties to PLA *** mechanical properties(tensile,thermomechanical and anti-impact mechanical),great fire safety(heat release and smoke emission),thermostability and improved electromagnetic interference shielding effectiveness of this well-designed PLA nanocomposite were *** mechanisms of the enhanced performances of the PLA bio-composites by loading b-HNTs were *** work presents a facile and environmentally-friendly bio-inspired modification strategy for HNTs to fabricate high-performance,multi-functional polymer composites,which is also suitable for surface modification of many other nanomaterials,including nanofibers,nanotubes,nanowires,and nanosheets.

关键词： mechanical properties thermostability fire safety electromagnetic interference shielding biomass

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