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首页> 美国卫生研究院文献>Polymers >Preparation and Characterization of Eco-Friendly Mg(OH)2/Lignin Hybrid Material and Its Use as a Functional Filler for Poly(Vinyl Chloride)
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Preparation and Characterization of Eco-Friendly Mg(OH)2/Lignin Hybrid Material and Its Use as a Functional Filler for Poly(Vinyl Chloride)

机译：环保型Mg（OH）2 /木质素杂化材料的制备表征及其作为聚氯乙烯功能填充剂的用途

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摘要

A functional magnesium hydroxide/lignin hybrid system was prepared by grinding and mixing the pure precursors using a planetary ball mill. In addition, the thermal stability was assessed based on the total mass loss of the hybrid system within the temperature range of 30–1000 °C, which amounted to 38%. Moreover, the average particle size was at 4.9 μm as determined by the laser diffraction method. The effect of addition of the prepared and characterized Mg(OH)2/lignin hybrid filler at concentrations ranging from 2.5 wt % to 10 wt % on the processing as well as mechanical and thermal properties of composites on the matrix of the unplasticized PVC compound was also evaluated. The addition of a filler to the poly(vinyl chloride) matrix causes a significant improvement of its thermal stability, which is approximately three times higher compared to a polymer without a filler. Furthermore, the prepared composites are additionally characterized by advantageous mechanical properties, especially higher Young’s modulus. A 10% increase in the oxygen index of PVC composites upon addition of 10 wt % hybrid fillers has also been observed, which contributes to an extended range of their application under conditions that require notable fire resistance.
机译：通过使用行星式球磨机研磨和混合纯前体来制备功能性氢氧化镁/木质素杂化体系。此外，热稳定性的评估是基于混合系统在30–1000°C的温度范围内的总质量损失（总计38％）。另外，通过激光衍射法求出的平均粒径为4.9μm。添加制备和表征的Mg（OH）2 /木质素杂化填料的浓度在2.5 wt％至10 wt％范围内对未塑化PVC化合物基质上复合材料的加工以及机械和热性能产生影响也进行了评估。将填料添加到聚（氯乙烯）基体中导致其热稳定性的显着改善，与没有填料的聚合物相比，其热稳定性提高了约三倍。此外，所制备的复合材料还具有良好的机械性能，尤其是较高的杨氏模量。还已经观察到，添加10 wt％杂化填料后，PVC复合材料的氧指数提高了10％，这有助于在要求显着耐火性的条件下扩展其应用范围。

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