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Characterization of Flame Retardancy and Oil-Water Separation Capacity of Superhydrophobic Silylated Melamine Sponges
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作者 Yongchun Liu Ni Qiao +7 位作者 Yanli Yang Yanchun Li Chunxiao He Siyang Wang Chengcheng Liu Ruixia Lei Wang Li Wenwen Gao 《Fluid Dynamics & Materials Processing》 EI 2024年第2期383-400,共18页
A silylated melamine sponge(SMS)was prepared by two simple steps,namely,immersion and dehydration of a melamine sponge coated with methyltrichlorosilane.The silylated structure of SMS was characterized by FT-IR(Fourie... A silylated melamine sponge(SMS)was prepared by two simple steps,namely,immersion and dehydration of a melamine sponge coated with methyltrichlorosilane.The silylated structure of SMS was characterized by FT-IR(Fourier-transform infrared)spectroscopy,SEM(Scanning electron microscopy)and in terms of water contact angles.Its oil-water absorption and separation capacities were measured by FT-IR and UV-visible spectrophoto-metry.The experimental results have shown that oligomeric silanol covalently bonds by Si-N onto the surface of melamine sponge skeletons.SMS has shown superhydrophobicity with a water contact angle exceeding 150°±1°,a better separation efficiency with regard to diesel oil(by 99.31%(wt/wt%)in oil-water mixture and even up to 99.99%(wt/wt%)for diesel oil in its saturated aqueous solution.Moreover,SMS inherited the intrinsicflame retardancy of the melamine sponge.In general,SMS has shown superhydrophobicity,high porosity,excellent selectivity,remarkable recyclability,and better absorption capacity for various oils and organic solvents,and a high separation efficiency for oil in saturated aqueous solutions. 展开更多
关键词 METHYLTRICHLOROSILANE silylated melamine sponge(SMS) SUPERHYDROPHOBICITY absorption capacity oil-water separable efficiency flame retardancy
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Comparative study on the flame retardancy of CO_(2) and N_(2) during coal adiabatic oxidation process
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作者 Xiyang Fang Bo Tan Haiyan Wang 《International Journal of Coal Science & Technology》 EI CAS CSCD 2023年第4期254-264,共11页
To test the effectiveness of N_(2) and CO_(2) in preventing coal from spontaneously combusting,researchers used an adiabatic oxidation apparatus to conduct an experiment with different temperature starting points.Non-... To test the effectiveness of N_(2) and CO_(2) in preventing coal from spontaneously combusting,researchers used an adiabatic oxidation apparatus to conduct an experiment with different temperature starting points.Non-adsorbed helium(He)was used as a reference gas,and coal and oxygen concentration temperature variations were analyzed after inerting.The results showed that He had the best cooling effect,N_(2) was second,and CO_(2) was the worst.At 70℃and 110℃,the impact of different gases on reducing oxygen concentration and the cooling effect was the same.However,at the starting temperature of 150℃,CO_(2) was less effective in lowering oxygen concentration at the later stage than He and N_(2).N_(2) and CO_(2) can prolong the flame retardation time of inert gas and reduce oxygen displacement with an initial temperature increase.When the starting temperature is the same,N_(2) injection cools coal samples and replaces oxygen more effectively than CO_(2) injection.The flame retardancy of inert gas is the combined result of the cooling effect of inert gas and the replacement of oxygen.These findings are essential for using inert flame retardant technology in the goaf. 展开更多
关键词 Coal spontaneous combustion Adiabatic oxidation Inert gas flame retardant Flame retardant efficiency REPLACEMENT
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Regulating the Localization of Intumescent Flame Retardant for Improving the Flame Retardancy of Ethylene-vinyl Acetate Copolymer Using Polyamide 6 as a Charring Agent
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作者 高喜平 ZHAO Pan +3 位作者 YAO Dahu 陆昶 YUE Ruiheng SHENG Qi 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2023年第3期701-711,共11页
Polyamide 6 (PA6) was employed as a charring agent of intumescent flame retardant (IFR) to improve the flame retardancy of ethylene-vinyl acetate copolymer (EVA). Different processing procedures were used to regulate ... Polyamide 6 (PA6) was employed as a charring agent of intumescent flame retardant (IFR) to improve the flame retardancy of ethylene-vinyl acetate copolymer (EVA). Different processing procedures were used to regulate the localization of IFR in the EVA matrix. Localizations in which IFR was dispersed in the PA6phase or in the EVA phase were prepared. The effect of the localization of IFR on the flame retardancy of EVA was investigated. The limited oxygen index (LOI), vertical burning (UL 94) and cone calorimeter test (CCT)showed that the localization of IFR in the EVA matrix exhibited a remarkable influence on the flame retardancy.Compared with EVA/IFR, a weak improvement in the flame retardancy was observed in the EVA/PA6/IFR blend withthe localization of IFR in the PA6 phase. When IFR was regulated from the PA6 phase to the EVA matrix,a remarkable increase in the flame retardancy was exhibited. The LOI was increased from 27.8%to 32.7%, and the UL 94 vertical rating was increased from V-2 to V-0. Moreover, an approximately 41.36%decrease in the peak heat release rate was exhibited. A continuous and compact intumescent charring layer that formed in the blends with the localization of IFR in the EVA matrix should be responsible for its excellent flame retardancy. 展开更多
关键词 intumescent flame retardant charring agent LOCALIZATION polyamide 6 ethylene vinyl acetate
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Elastic Aerogels of Cellulose Nanofibers@Metal–Organic Frameworks for Thermal Insulation and Fire Retardancy 被引量:12
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作者 Shengyang Zhou Varvara Apostolopoulou‑Kalkavoura +3 位作者 Marcus Vinicius Tavares da Costa Lennart Bergstrom Maria Stromme Chao Xu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2020年第1期102-114,共13页
Metal–organic frameworks(MOFs)with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant materials.However,the difficulties in processing and shaping MOFs have ... Metal–organic frameworks(MOFs)with high microporosity and relatively high thermal stability are potential thermal insulation and flame-retardant materials.However,the difficulties in processing and shaping MOFs have largely hampered their applications in these areas.This study outlines the fabrication of hybrid CNF@MOF aerogels by a stepwise assembly approach involving the coating and cross-linking of cellulose nanofibers(CNFs)with continuous nanolayers of MOFs.The cross-linking gives the aerogels high mechanical strength but superelasticity(80%maximum recoverable strain,high specific compression modulus of^200 MPa cm3 g−1,and specific stress of^100 MPa cm3 g−1).The resultant lightweight aerogels have a cellular network structure and hierarchical porosity,which render the aerogels with relatively low thermal conductivity of^40 mW m−1 K−1.The hydrophobic,thermally stable MOF nanolayers wrapped around the CNFs result in good moisture resistance and fire retardancy.This study demonstrates that MOFs can be used as efficient thermal insulation and flame-retardant materials.It presents a pathway for the design of thermally insulating,superelastic fire-retardant nanocomposites based on MOFs and nanocellulose. 展开更多
关键词 Metal-organic frameworks NANOCELLULOSE Superelastic aerogel Thermal insulation Fire retardancy
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THERMAL DEGRADATION AND FLAME RETARDANCY OF CALCIUM ALGINATE FIBERS 被引量:4
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作者 于建 夏延致 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2009年第6期807-812,共6页
Calcium alginate fibers were prepared by wet spinning of sodium alginate into a coagulating bath containing calcium chloride.The thermal degradation and flame retardancy of calcium alginate fibers were investigated wi... Calcium alginate fibers were prepared by wet spinning of sodium alginate into a coagulating bath containing calcium chloride.The thermal degradation and flame retardancy of calcium alginate fibers were investigated with thermal gravimetry(TG),X-ray diffraction(XRD),limiting oxygen index(LOI) and cone calorimeter(CONE).The results show that calcium alginate fibers are inherently flame retardant with a LOI value of 34,and the heat release rate(HRR),total heat release(THR),CO and CO_2 concentrations during com... 展开更多
关键词 Calcium alginate fiber Flame retardancy Wet spinning Combustion process Thermal degradation
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AN EVA/UNMODIFIED NANO-MAGNESIUM HYDROXIDE/SILICONE RUBBER NANOCOMPOSITE WITH SYNERGISTIC FLAME RETARDANCY 被引量:1
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作者 乔金樑 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2007年第5期437-440,共4页
A novel EVA/unmodified nano-magnesium hydroxide (NMH)/silicone rubber ternary nanocomposite was prepared by using a special compound flame retardant of NMH and silicone rubber (CFR). The flammability of the ternar... A novel EVA/unmodified nano-magnesium hydroxide (NMH)/silicone rubber ternary nanocomposite was prepared by using a special compound flame retardant of NMH and silicone rubber (CFR). The flammability of the ternary composite was studied by cone calorimeter test (CCT). Synergistic effect on flame retardancy was found between silicone rubber and NMH. EVA/CFR ternary nanocomposite showed the lowest peak heat release rate (PHRR) and mass loss rate (MLR) among the samples of virgin EVA, EVA composites. The synergistic flame retardancy of silicone rubber and NMH in EVA system is attributed to the enhanced char layers in the condensed phase that prevents the heat and mass transfer in the fire. 展开更多
关键词 EVA Nano-magnesium hydroxide Silicone rubber Flame retardancy.
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Flame Retardancy, Smoke Suppression Effect and Mechanism of Aryl Phosphates in Combination with Magnesium Hydroxide in Polyamide 6 被引量:2
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作者 陈俊 刘述梅 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2012年第5期916-923,共8页
The flammability, smoke emission behavior and mechanical properties of two oligomeric aryl phosphates [bisphenol A bis(diphenyl phosphate) (BDP) and resorcinol bis(diphenyl phosphate) (RDP)] combined with magn... The flammability, smoke emission behavior and mechanical properties of two oligomeric aryl phosphates [bisphenol A bis(diphenyl phosphate) (BDP) and resorcinol bis(diphenyl phosphate) (RDP)] combined with magnesium hydroxide (MH) in polyamide 6 (PA6) have been investigated. Combining 5 wt% BDP, 50 wt% MH imparts a limiting oxygen index (LOI) of 40.9% and UL94 V-0 rating to PA6, meanwhile the peak rate of smoke release (pRSR), total release of smoke (TSR) and Izod notched impact strength are 41%, 33% and 233% relative to the corresponding value of 55 wt% MH without BDP, respectively. Dynamic mechanical analysis (DMA) indicates that the improvement of toughness attributes to the enhanced compatibility between MH and PA6 by adding BDP. Furthermore, based on the comprehensive analysis of thermogravimetry (TG), cone calorimeter and SEM-EDX investigations, possible flame retardancy and smoke suppression mechanisms were revealed. Besides the fuel dilution and barrier effect of MH, the combination of MH and RDP shows an additional flame inhibition effect. The combination of MH and BDP results in a dominant condensed phase barrier effect which leads to obvious reduction on smoke emission and flammability. 展开更多
关键词 flame retardancy smoke suppression oligomeric aryl phosphate magnesium hydroxide polyamide 6
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PROMOTION EFFECT OF MELAMINE ON FLAME RETARDANCY OF EPOXY RESINS CONTAINING CAGED BICYCLIC PHOSPHATE
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作者 Jing-ping Hu Dao Li Yan Qin Xing-yi Wang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2007年第6期581-588,共8页
Caged bicyclic phosphate (CBP) and its dimelamine salt (PDS) were synthesized and added to epoxy resins to obtain the flame retarded epoxy resin composites. The flammability of the composites was characterized by ... Caged bicyclic phosphate (CBP) and its dimelamine salt (PDS) were synthesized and added to epoxy resins to obtain the flame retarded epoxy resin composites. The flammability of the composites was characterized by the limiting oxygen index (LOI) and cone calorimeter tests. The LOI values of flame retarded composites increase consistently with the increase of flame retardant amounts, and they are almost the same when the loading of CBP is the same as that of PDS, although the phosphorus content of PDS is much lower than that of CBP. The total heat release increases in the order of CBP30/ER 〈 PDS30/ER 〈 PDS15/ER 〈 CBPI5/ER, whereas that of specific extinction area is CBP15/ER 〉 CBP30/ER 〉 PDS30/ER ≌ PDS15/ER. PDS exhibits more effective inhibition of oxidation of combustible gases. In the tests of thermogravimetric analyses (TG) and Fourier transform infrared spectroscopy (FT-IR), it is found that the degradation of the composites is influenced greatly by the addition of flame retardants. By scanning electron microscopy (SEM), a thick and tight char-layer is observed for PDS30/ER, resulting from the interaction of nitrogen species with phosphorus species. Therefore, the combination of CBP with melamine in the flame retarded system can improve the flame retardancy greatly. 展开更多
关键词 Flame retardancy Thermal degradation MELAMINE Caged bicyclic phosphate Epoxy resin.
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Influence of Beta-Cyclodextrin Functionalized Tin Phenylphosphonate on the Thermal Stability and Flame Retardancy of Epoxy Composites
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作者 Yongming Chen Shuai Huang +7 位作者 Han Zhao Ru Yang Yining He Tianyu Zhao Yunlong Zhang Qinghong Kong Shasha Sun Junhao Zhang 《Journal of Renewable Materials》 SCIE EI 2022年第12期3119-3130,共12页
To enhance the thermal stability and flame retardancy of epoxy resin(EP),beta-cyclodextrin(β-CD)is successfully introduced into the layered tin phenylphosphonate(SnPP),which is incorporated into EP matrix for prepari... To enhance the thermal stability and flame retardancy of epoxy resin(EP),beta-cyclodextrin(β-CD)is successfully introduced into the layered tin phenylphosphonate(SnPP),which is incorporated into EP matrix for preparing EP/β-CD@SnPP composites.The results indicate that the addition ofβ-CD@SnPP obviously improve the thermal stability and residual yield of EP composites at higher temperature.When the amount ofβ-CD@SnPP is only 4 wt%,EP/4β-CD@SnPP composites pass V-1 rating,and LOI value is up to 30.8%.Meanwhile,β-CD@SnPP effectively suppress the heat release and reduce the smoke production of EP/β-CD@SnPP composites in combustion,and the peak heat release rate(PHRR),total heat release(THR),smoke production rate(SPR)of EP/6β-CD@SnPP composites reduce by 28.4%,33.0%and 44.8%by comparison with those of pure EP.The good flame retardancy and smoke suppression are ascribed to the synergistic effect of excellent carbon-forming capability and fire retardancy ofβ-CD@SnPP. 展开更多
关键词 Epoxy resin tin phenylphosphonate BETA-CYCLODEXTRIN synergistic effect flame retardancy smoke suppression
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Polyisocyanuratoesters:Renewable Linear Polyesters with High Flame Retardancy
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作者 Zijian Chen Rui Hou +3 位作者 Jianbing Cheng Fengjie Fang Donglin Tang Guangzhao Zhang 《Journal of Renewable Materials》 SCIE 2018年第6期584-590,共7页
Biobased urea nowadays attracts increasing attention as a biomass resource with giant potential,which benefits from the development of biobased ammonia and ecological sanitation system.Urea is an ideal feedstock for c... Biobased urea nowadays attracts increasing attention as a biomass resource with giant potential,which benefits from the development of biobased ammonia and ecological sanitation system.Urea is an ideal feedstock for chemical industry and developing new urea-based polymer materials can take advantage of the urea resource.In this work,a class of renewable linear polyesters,namely polyisocyanuratoesters(PICEs)were synthesized from a urea-based monomer bis(2-carbomethoxyethyl)isocyanurate and biobased aliphatic diols.Compared with conventional aliphatic polyesters,PICEs containing isocyanurate rings in the polymer chain backbone exhibit outstanding flame retardancy that both PICE-4(the number‘4’refers to the number of methylene in diols,e.g.4 for butylene and 6 for hexylene)and PICE-6 have high limiting oxygen index values over 30%.In the UL 94 tests,PICE-6 reaches V-1 rating;while V-2 is found for PICE-10.All PICEs exhibit similar pyrolysis behavior that the temperatures of 5%weight loss are around 320°C.PICEs are found to have glass transition among 20°C-45°C.No crystallization behavior is observed without annealing except for PICE-10,which can crystallize even at room temperature. 展开更多
关键词 UREA isocyanurate ring aliphatic diol linear polyester flame retardancy
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Mechanical Properties and Fire Retardancy of Wood Flour/High-Density Polyethylene Composites Reinforced with Continuous Honeycomb-Like Nano-SiO_(2)Network and Fire Retardant
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作者 Haiyang Zhou Xiaoyu Wang +2 位作者 Xiaolong Hao Qingwen Wang Rongxian Ou 《Journal of Renewable Materials》 SCIE EI 2020年第5期485-498,共14页
The mechanical properties of wood flour/high-density polyethylene composites(WPC)were improved by adding a small amount of nano-SiO_(2)to obtain a network-structured WPC with a continuous honeycomb-like nano-SiO_(2)ne... The mechanical properties of wood flour/high-density polyethylene composites(WPC)were improved by adding a small amount of nano-SiO_(2)to obtain a network-structured WPC with a continuous honeycomb-like nano-SiO_(2)network.The wood flour was modified with a fire retardant(a mixture of sodium octabonate and amidine urea phosphate)to improve its fire retardancy.The flexural properties,creep resistance,thermal expansion,and fire retardancy of the WPC were compared to a control(WPCCTRL)without nano-SiO_(2)or fire retardant.The flexural strength and modulus of the WPC containing only 0.55 wt.%nano-SiO_(2)were 6.6%and 9.1%higher than the control,respectively,while the creep strain and thermal expansion rate at 90°C were 33.8%and 13.6%lower,respectively.The cone calorimetry tests revealed that the nano-SiO_(2)network physically shielded the WPC,giving it lower heat release and smoke production rates.The thermal expansion was further decreased by incorporating fire retardants into the WPC,which showed the lowest total heat release and total smoke production and the highest mass retention.This study demonstrates a facile procedure for producing WPC with desired performances by forming a continuous honeycomb-like network by adding a small amount of nanoparticles. 展开更多
关键词 Wood plastic composites nano-SiO_(2) mechanical properties CREEP fire retardancy
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SYNTHESIS OF DIALKYL TETRABROMOPHTHALATES BY PTC AND THEIR FLAME RETARDANCY
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作者 Xi Kui WANG Xiao Mei WANG +1 位作者 Guang Tong XU zing Rui MENG(Applied Chemistry Department.Shandong Institute of Building Materials,Jinan 250022) 《Chinese Chemical Letters》 SCIE CAS CSCD 1995年第11期935-938,共4页
Eight dialkyl tetrabromophthalates (DATBPs) were synthesized by reacting tetrabromophthalic anhydride with excess alcohols which were used not only as a reactant but also as a solvent and using a quaternary ammonium s... Eight dialkyl tetrabromophthalates (DATBPs) were synthesized by reacting tetrabromophthalic anhydride with excess alcohols which were used not only as a reactant but also as a solvent and using a quaternary ammonium salt as a phase transfer catalyst (PTC). The yields were found to be between 85-93%. Their structures were characterized by IR, NMR and elementary analysis. The flame retardant properties of the compounds were also studied. 展开更多
关键词 PTC SYNTHESIS OF DIALKYL TETRABROMOPHTHALATES BY PTC AND THEIR FLAME retardancy
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Development of Cockleshell-Derived CaCO<sub>3</sub>for Flame Retardancy of Recycled PET/Recycled PP Blend
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作者 Supaphorn Thumsorn Kazushi Yamada +1 位作者 Yew Wei Leong Hiroyuki Hamada 《Materials Sciences and Applications》 2011年第2期59-69,共11页
Recycled polyethylene terephthalate (RPET) and recycle polypropylene (RPP) blends filled with a renewable filler, i.e. cockleshell-derived CaCO3 (CS) were prepared as an environmental friendly thermoplastic composite.... Recycled polyethylene terephthalate (RPET) and recycle polypropylene (RPP) blends filled with a renewable filler, i.e. cockleshell-derived CaCO3 (CS) were prepared as an environmental friendly thermoplastic composite. The effects of CS particle size and content on thermal stability, mechanical performance and flame retardant properties of the blends were investigated. Thermogravimetric analysis was performed to elucidate the thermal decomposition kinetics of the filled composites. The iso-conversion of the Flynn-Wall-Ozawa was developed by the second order polynomial function for thermal oxidative degradation of the blends while peak derivative temperature from the Kissinger method was able to verify the mechanism of degradation in these blends. The results indicated that both CS and commercial grade CaCO3 improved thermal stability and enhanced the stiffness as well as impact performance of the blends. However, this could only be achieved when high filler content was present in the RPET/RPP blends. 展开更多
关键词 Cockleshell ARAGONITE CACO3 Thermal Decomposition Kinetic Polymer BLEND Flame retardancy
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Synergistic effect of MXene on the flame retardancy and thermal degradation of intumescent flame retardant biodegradable poly(lactic acid)composites 被引量:8
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作者 Haowei Huang Dexuan Dong +5 位作者 Weijie Li Xinya Zhang Li Zhang Ying Chen Xinxin Sheng Xiang Lu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2020年第7期1981-1993,共13页
The effect of Ti3C2 MXene nanosheets on the intumescent flame retardant(IFR)poly(lactic acid)(PLA)composites was investigated among a series of PLA/IFR/MXene,which were prepared by melt blending 0-2.0 wt%MXene,10.0 wt... The effect of Ti3C2 MXene nanosheets on the intumescent flame retardant(IFR)poly(lactic acid)(PLA)composites was investigated among a series of PLA/IFR/MXene,which were prepared by melt blending 0-2.0 wt%MXene,10.0 wt%-12.0 wt%IFR and PLA together.The results of limiting oxygen index(LOI)and vertical burning(UL-94)discover that the combination of 0.5 wt%MXene and 11.5 wt%IFR synergistically improves the fire safety of PLA to reach UL-94 V-0 rating with LOI value of 33.0%.The PLA/IFR/MXene composites perform an obvious reduction in peak of heat release rate(HRR)in cone calorimeter tests(CCTs).Furthermore,the carbon residues after CCTs were characterized by scanning electron microscope(SEM),laser Raman spectroscopy(LRS),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS).It is demonstrated that both the titanium composition of the MXene structure and the characteristics of the two-dimensional material enhance the PLA/IFR/MXene composite materials’ability to produce a dense barrier layer to resist burnout during thermal degradation. 展开更多
关键词 MXene Poly(lactic acid) Intumescent flame retardant Synergistic effect
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Non-covalently Functionalized Graphene Oxide-Based Coating to Enhance Thermal Stability and Flame Retardancy of PVA Film 被引量:8
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作者 Wenhua Chen Pengju Liu +4 位作者 Lizhen Min Yiming Zhou Yuan Liu Qi Wang Wenfeng Duan 《Nano-Micro Letters》 SCIE EI CAS 2018年第3期11-23,共13页
The synergistic effect of conventional flame-retardant elements and graphene has received extensive attention in the development of a new class of flame retardants. Compared to covalent modification, the noncovalent s... The synergistic effect of conventional flame-retardant elements and graphene has received extensive attention in the development of a new class of flame retardants. Compared to covalent modification, the noncovalent strategy is simpler and expeditious and entirely preserves the original quality of graphene. Thus, non-covalently functionalized graphene oxide(FGO) with a phosphorus–nitrogen compound was successfully prepared via a one-pot process in this study. Polyethyleneimine and FGO were alternatively deposited on the surface of a poly(vinyl alcohol)(PVA) film via layer-by-layer assembly driven by electrostatic interaction, imparting excellent flame retardancy to the coated PVA film. The multilayer FGO-based coating formed a protective shield encapsulating the PVA matrix, effectively blocking the transfer of heat and mass during combustion. The coated PVA has a higher initial decomposition temperature of about 260 °C and a nearly 60% reduction in total heat release than neat PVA does. Our results may have a promising prospect for flame-retardant polymers. 展开更多
关键词 Graphene Non-covalent functionalization Layer-by-layer Flame retardant Poly(vinyl alcohol)(PVA)
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Flame Retardancy of Epoxy Resin/β-cyclodextrin@Resorcinol Bisdiphenylphosphate Inclusion Composites 被引量:4
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作者 SHAN Xueying HAN Ji +2 位作者 SONG Yan XING Zhixiang LI Jinchun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2020年第2期455-463,共9页
In order to improve the efficiency of β-CD,the inclusion complex of β-CD and resorcinol bisdiphenylphosphate (RDP) (β-CD@RDP) was prepared,which β-CD was as the host component and RDP was as the guest.The structur... In order to improve the efficiency of β-CD,the inclusion complex of β-CD and resorcinol bisdiphenylphosphate (RDP) (β-CD@RDP) was prepared,which β-CD was as the host component and RDP was as the guest.The structure and thermal stability property of β-CD@RDP was also characterized.EP/β-CD@RDP composites were prepared by adding β-CD@RDP into EP matrix.The results of thermogravimetric test showed that the flame retardant systems could effectively increase the corresponding temperature of EP matrix to reach the maximum thermal decomposition rate,and exhibited good char-forming property.When the amount of β-CD@RDP in EP was 20wt%,the limiting oxygen index (LOI) value of EP was increased to 26.5% from 19.8%,and the vertical burning test (UL-94) reached V-1 level.The cone calorimeter test indicated that 20wt% loading in EP could reduce the peak of heat release rate (PHRR) and the total heat release (THR) of EP by 94.7% and 93.4% respectively,and the peak of smoke production rate (PSPR) and the total smoke production (TSP) was reduced by 16.7% and 22.2%,respectively.Therefore,the addition of β-CD@RDP could reduce the fire risk of EP effectively. 展开更多
关键词 INCLUSION flame retardant thermal stability fire risk
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Flame Retardancy and Thermal Property of Poly (ethylene terephthalate)/Modified Cyclotriphosphazene Composites 被引量:2
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作者 汪娇宁 苏兴勇 +4 位作者 雅兰 陈雯婷 陈飞 陈樱 毛志平 《Journal of Donghua University(English Edition)》 EI CAS 2015年第3期384-389,共6页
In this study,hexachlorocyclotriphosphazene( HCCP)modified by boric acid and 3-aminopropyltriethoxysilane( KH-550)in solvent diglyme( FR-HCCP) was used as the flame retardant for poly( ethylene terephthalate)( PET) co... In this study,hexachlorocyclotriphosphazene( HCCP)modified by boric acid and 3-aminopropyltriethoxysilane( KH-550)in solvent diglyme( FR-HCCP) was used as the flame retardant for poly( ethylene terephthalate)( PET) composites. The flame retardancy and thermal property of pure PET and flame-retarded PET composites were mainly investigated. The flame retardancy was investigated by limited oxygen index( LOI) and UL-94 vertical burning test. The results showed that the composites could achieved an increased UL-94 V-0 rating and LOI value 30. 2, when the content of FR-HCCP was just 1%. The pyrolysis-gas chromatography-mass spectrometry( Py-GC / MS) study demonstrated that introducing FR-HCCP into PET would prevent the polymer pyrolysis during heating. TGA analysis showed that the addition of FR-HCCP could improve the char formation of the system. Roman spectra showed the order degree of residue was increasing by adding the additive. The morphology and the chemical structure of the charred residue were detected by SEMand FTIR,respectively. Results demonstrated that a good barrier was formed by the char of the composite,which protected the inside of the composite during burning. 展开更多
关键词 boron-silicon POLYPHOSPHAZENE flame retardant poly(ethylene terephthalate)(PET)
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Effect of MMT on Flame Retardancy of PLA/IFR/LDH Composites 被引量:1
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作者 Ping Zhang Siyu Gan +4 位作者 Lin Chen Hao Chen Chunhui Jia Yingke Fu Ying Xiong 《Journal of Renewable Materials》 SCIE EI 2022年第11期2937-2947,共11页
Nano filler synergistic intumescent flame retardant(IFR)system is an effective way to improve the flame retardant properties of polymer.In this study,the effects of montmorillonite(MMT)on the flame retardant propertie... Nano filler synergistic intumescent flame retardant(IFR)system is an effective way to improve the flame retardant properties of polymer.In this study,the effects of montmorillonite(MMT)on the flame retardant properties of polylactic acid/layered double hydroxides(PLA/LDH)and PLA/IFR/LDH were investigated.The results show that both LDH and LDH/IFR can reduce the peak heat release rate(HRR)of PLA and prolong the combustion time of PLA;When a proportionate MMT is introduced into PLA/LDH and PLA/IFR/LDH systems,respectively,MMT will not only affect the degradation process of PLA composites during combustion,but also the PLA composites can form a more stable carbon layer during combustion,which could decrease the peak HRR and prolong combustion time of PLA composite.Furthermore,when 0.5 wt%MMT is incorporated,the peak HRR of LDH/IFR/LDH composite is reduced by 16.17%and the combustion time is prolonged by about 70 s.This study can provide an opportunity to further optimize the properties of intumescent flame retardant polymer. 展开更多
关键词 Polylactic acid MONTMORILLONITE layered double hydroxides intumescent flame retardant synergistic effect
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Flame Retardancy Enhancement of Hybrid Composite Material by Using Inorganic Retardants 被引量:1
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作者 Mohammed Al-Maamori A Al-Mosawi Abbass Hashim 《Materials Sciences and Applications》 2011年第8期1134-1138,共5页
This study aims to investigate the possibility of improving the flame Retardancy for the hybrid composite material consisting araldite resin (CY223). The hybrid composite was reinforced by hybrid fibers from carbon an... This study aims to investigate the possibility of improving the flame Retardancy for the hybrid composite material consisting araldite resin (CY223). The hybrid composite was reinforced by hybrid fibers from carbon and Kevlar fibers on woven roving form (45o -0o), by using a surface layer of 4mm thick of Zinc Borate flame retardant. Afterward, the structure was exposed directly to gas flame of 2000oC due to 10 mm and 20mm exposure interval. The retardant layer thermal resistance and protection capability were determined. The study was continued to improve the performance of Zinc Borate layer mixed by 10%, 20% and 30% of Antimony Trioxide. To determine the heat transfer of the composite material the opposite surface temperature method was used. Zinc Borate with (30%) Antimony Trioxide gives the optimized result of the experiment. 展开更多
关键词 HYBRID COMPOSITE MATERIAL FLAME Retardant MATERIAL INORGANIC Retardant
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STUDY OF SYNERGISTIC FLAME RETARDANCY OF PHOSPHORUS AND BORON ON COTTON AND COTTON-PET BLENDS FBRICS
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作者 郑利民 江红 叶慧敏 《Journal of China Textile University(English Edition)》 EI CAS 1997年第1期28-32,共5页
The fire retardancy effectiveness of mixtures formed from phosphorus-containing compound and boron-phosphorus-containing compound were examined utilizing limited oxygen index (LOI) and vertical test techniques. Phosph... The fire retardancy effectiveness of mixtures formed from phosphorus-containing compound and boron-phosphorus-containing compound were examined utilizing limited oxygen index (LOI) and vertical test techniques. Phosphorus-boron systems in flame retardancy may show synergism and antagonism. The fire-retardancy effectiveness of boron-phosphorus-containing compounds are superior to the mixing systems of compounds which contain phosphorus or boron individully. 展开更多
关键词 FLAME retardant SYNERGISTIC effect COTTON
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