摘要
将可膨胀石墨(EG)与P-N膨胀阻燃剂(IFR)复合阻燃EVA树脂,通过氧指数(OI)、垂直燃烧测试(UL94)、锥形量热仪(CONE)研究了EG与IFR复合阻燃EVA的协同效应。结果表明:阻燃剂总添加量为30 phr,随着其中EG含量的增加,OI呈先增加后下降趋势,确定EG:IFR=1:1为最佳配比,OI达到36.6%,UL94为V-0级;EG与IFR复合阻燃EVA,热释放速率曲线呈现"前单峰型",为凝聚相阻燃机理;燃烧后形成的炭层结构较致密,表现出一定的协同作用。
Flame retarded EVA resin were prepared by synergistic flame-retardant of expandable graphite （EG） and P-N intumescent flame retardant （IFR）. The synergistic flame retardancy of flame retarded EVA resin were studied by means of oxygen index （OI）, UL94 vertical burning testing and cone calorimeter testing （CONE）. The results show that： the total amount of flame retardant is 30 phr, with the increase of the content of EG, OI increases first and then decreases. When the mass ratio of EG and IFR is 1：1, OI improves to 36.6% and the UL94 is V-O. The heat release rate curve of flame retarded EVA presents single peak type, the flame retardant mechanism is condensed phase flame retardant mechanism; the more compact char structure is formed after combustion, which demonstrates the synergistic flame-retardant effect.
出处
《塑料科技》
CAS
北大核心
2013年第3期85-89,共5页
Plastics Science and Technology
基金
山东省自然科学基金资助项目(项目号ZR2012EEL18)
