China Plastics ›› 2017, Vol. 31 ›› Issue (1): 55-59 .DOI: 10.19491/j.issn.1001-9278.2017.01.010
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Abstract: A flameretardant (EPMPP) based on a melamine pyrophosphate (MPP) core and epoxy shell were prepared through an insitu polymerization reaction at a reaction temperature of 75 ℃ with curing time of 4 h, and its morphology and microstructure were characterized by scanning electron microscopy, Fouriertransform infrared spectroscopy and water contact angle. The results confirmed that MPP particles were successfully encapsulated by epoxy resin. The flameretarded poly (ethylene-co-vinyl acetate) (EVA) composites were fabricated by a combination of EPMPP with aluminium diethylphosphinate (ADP) as an intumescent flameretardant system, and their flameretardant properties were investigated by limiting oxygen index, vertical burning experiment and thermogravimetric analysis. The results indicated that the composites achieved a UL 94 V-0 classification and an oxygen index value of 31 % when the intumescent flame retardant system was incorporated into EVA at a weight fraction of 40 % with an ADP/EPMPP mass ratio of 2/1. In addition, the composites exhibited an initial decomposition temperature of 303 ℃ and a char yield of 18 %.
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URL: https://www.plaschina.com.cn/EN/10.19491/j.issn.1001-9278.2017.01.010
https://www.plaschina.com.cn/EN/Y2017/V31/I1/55