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首页> 外文期刊>Journal of Applied Polymer Science >Flame-Retardant Properties of Acrylonitrile-Butadiene-Styrene/Wood Flour Composites Filled with Expandable Graphite and Ammonium Polyphosphate
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Flame-Retardant Properties of Acrylonitrile-Butadiene-Styrene/Wood Flour Composites Filled with Expandable Graphite and Ammonium Polyphosphate

机译：可膨胀石墨和聚磷酸铵填充的丙烯腈-丁二烯-苯乙烯/木粉复合材料的阻燃性能

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摘要

Expandable graphite (EG) and ammonium polyphosphate (APP) were used to improve the flame retardancy of acrylonitrile-butadiene-styrene based wood-plastic composites (WPCs). A synergistic effect between EG and APP on the flame retardancy of the WPCs was proposed. The results show that the highest limited oxygen index (LOI) of 34.2% and a V-0 rating were achieved when the ratio of EG to APP 12.5:7.5; this comprised 20 wt % of the total amount. However, LOI values of the samples with EG and APP alone were only 30.5 and 24.5%, respectively. Thermogravimetric analysis indicated that the flame retardants improved the amount of residue. The EG and EG/APP additives greatly decreased the peak heat release rate and suppressed smoke according to cone calorimetry testing. The scanning electron microscopy analysis indicated that the surface of the wormlike char was covered with a granular substance, which may have been the viscous phosphoric acid or poly(phosphoric acid) decomposed from APP. The flameretardant additives worsened the mechanical properties of the WPCs.
机译：使用可膨胀石墨（EG）和聚磷酸铵（APP）来提高丙烯腈-丁二烯-苯乙烯基木塑复合材料（WPC）的阻燃性。提出了EG和APP对木塑复合材料阻燃性的协同作用。结果表明，当EG与APP的比例为12.5：7.5时，最高极限氧指数（LOI）为34.2％，V-0等级为0。这占总量的20重量％。然而，仅含EG和APP的样品的LOI值分别仅为30.5和24.5％。热重分析表明，阻燃剂改善了残留量。根据锥形量热测试，EG和EG / APP添加剂极大地降低了峰值放热速率并抑制了烟雾。扫描电子显微镜分析表明，蠕虫状炭的表面覆盖有颗粒状物质，该物质可能是粘稠的磷酸或从APP分解而来的聚磷酸。阻燃添加剂使WPC的机械性能恶化。

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