Effect of intumescent compositions on flammable properties of ethylene vinyl acetate and polypropylene
作者： Thanhkieu Giang , Dongquy Hoang , Jinhwan Kim
DOI: 10.1002/FAM.2436
关键词: Polymer chemistry 、 Thermogravimetric analysis 、 Fire retardant 、 Nuclear chemistry 、 Ethylene-vinyl acetate 、 Intumescent 、 Flammability 、 Pentaerythritol 、 Melamine 、 Ammonium polyphosphate 、 Materials science
摘要: Summary An intumescent flame retardant (IFR) system was prepared by 2 ways. Firstly, bis(2,6,7-trioxa-1-phosphabicyclo[2,2,2]octane-1-oxa-4-hydroxymethyl) phosphonate methyl (bis-PM) synthesized and characterized 1H nuclear magnetic resonance (NMR), 31P NMR, Fourier transform infrared spectroscopies. This carbonization agent mixed with melamine (ME), ammonium polyphosphate (APP), pentaerythritol (PER) to constitute an IFR system. Secondly, reaction reaction, the presence of compositions in product confirmed NMR infrared. Both systems enhanced flammable retardation ethylene vinyl acetate (EVA) polypropylene (PP). Flammability thermal behaviors IFR-EVA IFR-PP were investigated vertical burning test (UL-94 V) thermogravimetric analysis. Results indicated that performed excellent retardancy antidripping ability for PP. At 30 wt% loading, optimum formulations are bis-PM/ME: 4/1, bis-PM/ME/PER: 3/1/1, APP/ME/PER: bis-PM/ME/PER/APP: 1.5/1.5/1/1 give UL-94 V-0 rating. However, V-0 rating results only obtained EVA when contain 4/1 3/1/1. The char yield from decomposition has effects on
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