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首页> 外文期刊>Polymer Degradation and Stability >Preparation and burning behaviors of flame retarding biodegradable poly (lactic acid) nanocomposite based on zinc aluminum layered double hydroxide
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Preparation and burning behaviors of flame retarding biodegradable poly (lactic acid) nanocomposite based on zinc aluminum layered double hydroxide

机译：锌铝层状双氢氧化物阻燃可生物降解聚乳酸纳米复合材料的制备及燃烧性能

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摘要

A flame retarding biodegradable polylactic acid (PLA) nanocomposite based on flame retardant composites (containing ammonium polyphosphate (APP), pentaerythritol (PER) and melamine cyanurate (MC) by controlling the weight ratio was 2:2:1) and organomodified zinc aluminum layered double hydroxide (Zn-Al-LDH) has been prepared by melt-compounding directly. The morphology and burning behaviour of nanocomposite with 2 wt% Zn-Al-LDH loadings were investigated. The extent of dispersion of LDH was quantified by wide angle X-ray scattering (WAXS) and transmission electron microscopy (TEM), illuminating the good dispersion state for ZnAl-LDH in the PLA matrix. Significant improvements in fire retardant performance were observed for the nanocomposite from microscale combustion calorimeter (MCC) and cone calorimetry (reducing both the heat release rate and the total heat released). It revealed that incorporation of FR and ZnAl-LDH was very efficient in improving the flame retardance of PLA composite.
机译：一种基于阻燃复合材料的阻燃生物可降解聚乳酸（PLA）纳米复合材料（通过控制重量比为2：2：1包含多磷酸铵（APP），季戊四醇（PER）和三聚氰胺氰尿酸酯（MC））和有机改性的锌铝层状直接通过熔融混合制备了双氢氧化物（Zn-Al-LDH）。研究了Zn-Al-LDH含量为2 wt％的纳米复合材料的形貌和燃烧行为。 LDH的分散程度通过广角X射线散射（WAXS）和透射电子显微镜（TEM）进行定量，阐明了ZnAl-LDH在PLA基质中的良好分散状态。通过微型燃烧量热仪（MCC）和锥形量热法，可以观察到纳米复合材料在阻燃性能方面的显着提高（降低了放热率和释放的总热量）。结果表明，FR和ZnAl-LDH的掺混对提高PLA复合材料的阻燃性非常有效。

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