Construction of graphite oxide modified black phosphorus through covalent linkage: An efficient strategy for smoke toxicity and fire hazard suppression of epoxy resin

Zhou, Yifan; Chu, Fukai; Qiu, Shuilai; Guo, Wenwen; Zhang, Shenghe; Xu, Zhoumei; Hu, Weizhao; Hu, Yuan

doi:10.1016/j.jhazmat.2020.123015

Cited by 119 publications

(41 citation statements)

References 41 publications

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“…Not only do they enhance the toughness of the polymer matrix, but heighten the flame retardant properties. 15,16 Zhou et al 17 successfully synthesized NiFe-LDH/MoS 2 hybrid, which reduced the pHRR and total heat release (THR) of EP by 66% and 34%, and inhibited the production of toxic volatiles and CO. Zhou et al 18 obtained RGO modified BPNSs (BP-RGO) nanohybrid through solvothermal reaction. Under the loading of 2 wt% BP-RGO, the char residues at 800 C increased by 50%, and the fire growth index (FGI) was 5.3 kW/s m 2 , which abated the fire risk.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of phosphorus and silicon co‐doped graphitic carbon nitride and its combination with ammonium polyphosphate to enhance the flame retardancy of epoxy resin

Zhang

Chen

Yuan

et al. 2021

J of Applied Polymer Sci

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Phosphorus and silicon co-doped graphitic carbon nitride (PSiCN) was synthesized by inducing the polycondensation reaction of melamine, diammonium hydrogen phosphate, and silicic acid. The structure and thermal properties of PSiCN were characterized. With the incorporation of 2 wt% of PSiCN and 8 wt% of ammonium polyphosphate (APP), EP/2PSiCN-8APP composite exhibited a limiting oxygen index value of 29.0% and passed a UL-94V-0 rating, which reached the refractory level. The thermogravimetric analysis confirmed that the addition of PSiCN and APP improved the thermal stability of the composites. The cone calorimetry test (CCT) revealed that the peak of heat release rate, total heat release, the peak of smoke production rate and total smoke production of EP/2PSiCN-8APP composite was reduced by 71.1%, 53.5%, 65.4%, and 53.5%, respectively, compared with pure EP. Furthermore, the residues after CCT were evaluated by scanning electron microscopy, laser Raman spectroscopy and Fourier transform infrared spectroscopy, and the flame retardant mechanism of EP/2PSiCN-8APP composite was proposed. Finally, the parallel arrangement of the aromatic ring and the surface of the PSiCN and the synergistic effect of the P/N/Si multi-element resulted in EP/2PSiCN-8APP with excellent mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Synthesis of phosphorus and silicon co‐doped graphitic carbon nitride and its combination with ammonium polyphosphate to enhance the flame retardancy of epoxy resin

Zhang

Chen

Yuan

et al. 2021

J of Applied Polymer Sci

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“…This result indicates that the degree of graphitization increases with the increase of LbL coating. The Raman results show that the FPUF@GO/OA‐POSS‐6 char residue is stronger and more stable than the pure FPUF 57–62 …”

Section: Resultsmentioning

confidence: 99%

Applications of GO/OA‐POSS Layer‐by‐Layer self‐assembly nanocoating on flame retardancy and smoke suppression of flexible polyurethane foam

Jia

Cheng

et al. 2021

Polymers for Advanced Techs

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Flexible polyurethane foam (FPUF) is extremely flammable and will release a large number of toxic fumes during the combustion process, which brings great safety hazards. Therefore, a binary hybrid nanocoating composed of graphene oxide (GO) and octaamino polyhedral oligomeric silsesquioxane (OA‐POSS) is deposited on the surface of FPUF through layer‐by‐layer self‐assembly technology, with the aim of enhance the flame retardancy and smoke suppression properties of the hybrid FPUF. Compared with pure FPUF, the peak heat release rate, the total heat release, the peak smoke production rate and the total smoke release of FPUF@GO/OA‐POSS‐6 is decreased by 67.3%, 28.3%, 65.03% and 42.9%, indicating the hybrid FPUF excellent flame retardancy and smoke suppression properties. Compared with pure FPUF, the tensile strength of FPUF@GO/OA‐POSS‐6 is increased by 42%, and after three times of compression, the compressive strength increases by 83.17% on average. Facts have proved that the hybrid effect between GO and OA‐POSS enhances the flame retardancy, smoke suppressive effects, tensile strength and compressive strength of FPUF.

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“…Figures 7B-F showed the P 2p, C 1s, O 1s, N 1s, and Al 2p spectra of the external char of RPUF/ADP15/EG15. As shown in the P 2p spectrum, two peaks appear in the 134.4 and 135.8 eV, which was attributed to single phosphate and pyrophosphate, respectively, revealing the formation of cross-linked phosphorus oxide compounds (Zhou et al, 2020). As shown in C 1s spectrum, the C 1s peaks can be deconvoluted into three peaks at 284.7, 285.7, and 287.3 eV corresponding to C-C, C-O, and C O bonds, respectively.…”

Section: Condensed Phase Analysismentioning

confidence: 95%

“…Moreover, the O content in the surface char layer of RPUF/ADP30 and RPUF/ADP15/EG15 was 15.9 and 13.1%, respectively, higher than that of RPUF and RPUF/ EG30 (12.1 and 8.4%), respectively. This result is due to the decomposition of ADP to produce POx during combustion process, which can promote carbon formation (Zhou et al, 2020). Figures 7B-F showed the P 2p, C 1s, O 1s, N 1s, and Al 2p spectra of the external char of RPUF/ADP15/EG15.…”

Section: Condensed Phase Analysismentioning

confidence: 97%

Flame Retarded Rigid Polyurethane Foams Composites Modified by Aluminum Diethylphosphinate and Expanded Graphite

Hu¹,

Zhou

Li³

et al. 2021

Front. Mater.

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Rigid polyurethane foam (RPUF) was an organic porous material, which was applied in many fields for excellent thermal insulation and mechanical properties, especially in building insulation. However, the poor fire performance significantly suppresses its further application. In this work, aluminum diethylphosphinate (ADP) combined with expanded graphite (EG) to form a synergistic flame retarded system, which was introduced to fabricate flame retarded rigid polyurethane foam composites (FR-RPUF) by one-step water-blown method. Furthermore, thermal insulation, thermal stability, fire performance, and decomposition products of RPUF and FR-RPUF composites were systematically investigated. It was found that FR-RPUF composites possessed LOI of 25.9 vol% with V-1 rating in UL-94 test when 10 php of ADP and 20 php of EG were added, which were better than RPUF composites with ADP or EG added alone. MCC test showed that RPUF/ADP24/EG6 had the lowest PHRR value of 159.85 W/g, which was 52.01 W/g lower than that of pure RPUF. Gas phase products investigation implied that the combination of ADP and EG could decrease toxic and combustible gases intensities, thus significantly enhancing fire safety of FR-RPUF composites. SEM test indicated that ADP and EG promoted the formation of dense and continuous char residue, which significantly inhibited heat and substance transfer in combustion, thus significantly enhancing fire performance of FR-RPUF composites.

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Construction of graphite oxide modified black phosphorus through covalent linkage: An efficient strategy for smoke toxicity and fire hazard suppression of epoxy resin

Cited by 119 publications

References 41 publications

Synthesis of phosphorus and silicon co‐doped graphitic carbon nitride and its combination with ammonium polyphosphate to enhance the flame retardancy of epoxy resin

Synthesis of phosphorus and silicon co‐doped graphitic carbon nitride and its combination with ammonium polyphosphate to enhance the flame retardancy of epoxy resin

Applications of GO/OA‐POSS Layer‐by‐Layer self‐assembly nanocoating on flame retardancy and smoke suppression of flexible polyurethane foam

Flame Retarded Rigid Polyurethane Foams Composites Modified by Aluminum Diethylphosphinate and Expanded Graphite

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