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Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite.
Materials (Basel). 2019 Dec 04; 12(24)M

Abstract

The intumescent flame retardant ethylene-propylene-diene rubber (EPDM) was prepared using intumescent flame retardant (IFR), including ammonium polyphosphate (APP) /pentaerythrotol (PER) and expandable graphite (EG), as the flame retardant agent. The effects of IFR and EG on the flame retardancy, fire behavior, and thermal stability of the EPDM were investigated. The results show that IFR and EG have excellent synergistic flame retardant effects. When the mass ratio of IFR to EG is 3:1 and the total addition content is 40 phr, the limiting oxygen index (LOI) value of the EPDM material (EPDM/IFR/EG) can reach 30.4%, and it can pass a V-0 rating in the vertical combustion (UL-94) test. Meanwhile, during the cone calorimetry test, the heat release rate and total heat release of EPDM/IFR/EG are 69.0% and 33.3% lower than that of the pure EPDM, respectively, and the smoke release of the material also decreases significantly, suggesting that the sample shows good fire safety. In addition, the flame retardant mechanism of IFR and EG is systematically investigated by thermogravimetric analysis/infrared spectrometry (TG-IR), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM), and the results indicate that IFR and EG have only physical interaction. Moreover, the reason why IFR exhibits a poor flame retardant effect in EPDM materials is explained.

Authors+Show Affiliations

Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.School of Environmental Science and Safety Engineering, Tianjin University of Technology, 391 Binshui Xidao, Xiqing District, Tianjin 300384, China.Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.School of Environmental Science and Safety Engineering, Tianjin University of Technology, 391 Binshui Xidao, Xiqing District, Tianjin 300384, China.School of Environmental Science and Safety Engineering, Tianjin University of Technology, 391 Binshui Xidao, Xiqing District, Tianjin 300384, China.Tianjin Fire Research Institute of Ministry of Emergency Management, 110 Weijin Nan Road, Nankai District, Tianjin 300381, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31817279

Citation

Wang, Junsheng, et al. "Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite." Materials (Basel, Switzerland), vol. 12, no. 24, 2019.
Wang J, Xue L, Zhao B, et al. Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite. Materials (Basel, Switzerland). 2019;12(24).
Wang, J., Xue, L., Zhao, B., Lin, G., Jin, X., Liu, D., Zhu, H., Yang, J., & Shang, K. (2019). Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite. Materials (Basel, Switzerland), 12(24). https://doi.org/10.3390/ma12244035
Wang J, et al. Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite. Materials (Basel, Switzerland). 2019 Dec 4;12(24) PubMed PMID: 31817279.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Flame Retardancy, Fire Behavior, and Flame Retardant Mechanism of Intumescent Flame Retardant EPDM Containing Ammonium Polyphosphate/Pentaerythrotol and Expandable Graphite. AU - Wang,Junsheng, AU - Xue,Lei, AU - Zhao,Bi, AU - Lin,Guide, AU - Jin,Xing, AU - Liu,Dan, AU - Zhu,Haibo, AU - Yang,Jinjun, AU - Shang,Ke, Y1 - 2019/12/04/ PY - 2019/10/31/received PY - 2019/11/29/revised PY - 2019/12/02/accepted PY - 2019/12/11/entrez PY - 2019/12/11/pubmed PY - 2019/12/11/medline KW - ethylene–propylene–diene rubber KW - fire behavior KW - flame retardancy KW - flame retardant mechanism KW - synergistic flame retardant effect JF - Materials (Basel, Switzerland) VL - 12 IS - 24 N2 - The intumescent flame retardant ethylene-propylene-diene rubber (EPDM) was prepared using intumescent flame retardant (IFR), including ammonium polyphosphate (APP) /pentaerythrotol (PER) and expandable graphite (EG), as the flame retardant agent. The effects of IFR and EG on the flame retardancy, fire behavior, and thermal stability of the EPDM were investigated. The results show that IFR and EG have excellent synergistic flame retardant effects. When the mass ratio of IFR to EG is 3:1 and the total addition content is 40 phr, the limiting oxygen index (LOI) value of the EPDM material (EPDM/IFR/EG) can reach 30.4%, and it can pass a V-0 rating in the vertical combustion (UL-94) test. Meanwhile, during the cone calorimetry test, the heat release rate and total heat release of EPDM/IFR/EG are 69.0% and 33.3% lower than that of the pure EPDM, respectively, and the smoke release of the material also decreases significantly, suggesting that the sample shows good fire safety. In addition, the flame retardant mechanism of IFR and EG is systematically investigated by thermogravimetric analysis/infrared spectrometry (TG-IR), Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM), and the results indicate that IFR and EG have only physical interaction. Moreover, the reason why IFR exhibits a poor flame retardant effect in EPDM materials is explained. SN - 1996-1944 UR - https://www.unboundmedicine.com/medline/citation/31817279/Flame_Retardancy_Fire_Behavior_and_Flame_Retardant_Mechanism_of_Intumescent_Flame_Retardant_EPDM_Containing_Ammonium_Polyphosphate/Pentaerythrotol_and_Expandable_Graphite_ L2 - https://www.mdpi.com/resolver?pii=ma12244035 DB - PRIME DP - Unbound Medicine ER -
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