Effects of Zinc Phytate on Flame Retardancy and Thermal Degradation Behaviors of Intumescent Flame-retardant Polypropylene |
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| Authors: | Dong Ma Peihua Zhao |
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| Affiliation: | 1. Ningbo Key Laboratory of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, P. R. China;2. North University of China, Jiancaoping District, Taiyuan, P. R. China;3. North University of China, Jiancaoping District, Taiyuan, P. R. China |
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| Abstract: | In this paper, zinc phytate was prepared and used as a synergist in intumescent flame-retarded polypropylene composites. The results showed that the polypropylene composites with 17?wt% intumescent flame retardant and 2?wt% zinc phytate have a limiting oxygen index 29.2 and achieve the UL-94?V-0 rating. Moreover, the peak heat release rate of the polypropylene composites decreases from 374 to 275?kW/m2. Real-time Fourier-transform infrared spectroscopy showed that the zinc phytate delays the emission of carbon dioxide indicating that zinc phytate slows the degradation of polypropylene which regulates the suitability of intumescent flame-retardant system in polypropylene. |
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| Keywords: | Biobased materials charring IFR synergist zinc phytate |
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