高密度聚乙烯/蒙脱土纳米复合材料膨胀阻燃体系的性能
Intumescent Flame Retardant Properties of High Density Polyethylene/Montmorillonite Nanocomposites
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摘要: 使用以乙烯/醋酸乙烯共聚物(EVA)为相容剂的高密度聚乙烯/蒙脱土(HDPE/OMT)纳米复合材料作为基体,制备了含不同成炭剂的聚磷酸铵(APP)膨胀阻燃体系,对其阻燃性能进行了比较和研究,并分析了蒙脱土与膨胀阻燃剂协效作用的机理。热重分析(TGA)、垂直燃烧(UL-94)、极限氧指数(LOI)、锥形量热计结果表明:APP/季戊四醇(PER)体系熔融过程较短可形成蒙脱土增强炭层;PER/PA/OMT体系中较高的有机物含量有利于蒙脱土迁移和堆积。Abstract: In order to improve the flame retardant properties of high density polyethylene/polyethylene-co-(vinyl acetate)/organomont morillonite(HPPE/PE-EVA/OMT) nanocomposites,(intumescent) flame retardance(IFR) with different charring agents were designed.TGA,UL