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首页> 外文期刊>Journal of Polymers and the Environment >Phosphogypsum Waste Used as Reinforcing Fillers in Polypropylene Based Composites: Structural, Mechanical and Thermal Properties
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Phosphogypsum Waste Used as Reinforcing Fillers in Polypropylene Based Composites: Structural, Mechanical and Thermal Properties

机译：磷石膏废料用作聚丙烯基复合材料的补强填料：结构，机械和热性能

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摘要

The industrial production of wet phosphoric acid in Morocco led to controversial stockpiling of waste phosphogypsum by-products resulting in the release of significant amounts of toxic impurities in salt marshes. In the framework of fighting against global climate change and efforts to reduce toxic industrial wastes (phosphate industry), this work presents a new polymer composite based on phosphogypsum (PhG) and polypropylene (PP).The compounds were produced by twin-screw extrusion and injection molding. The morphological results show that good affinity between PhG and PP led to good particle dispersion/distribution in the polymer matrix. Thermal characterizations showed that PhG particles improved the thermal stability of PP with a 50 A degrees C increase at 40 wt%. The optimum tensile modulus was also obtained at 40 wt% with a 74 % increase over neat PP. Dynamical mechanical analysis showed that PhG addition can improve the viscoelastic properties of PP for potential applications under dynamic stress. Overall, it can be concluded that PhG is potential reinforcing filler for the production of PP composites and represents a promising avenue for the valorization of this waste as a new raw material while resolving some environmental issues.
机译：摩洛哥的湿法磷酸工业生产导致有争议的废磷石膏副产品的储存，导致盐沼中释放出大量有毒杂质。在应对全球气候变化和减少有毒工业废物（磷酸盐工业）的框架下，这项工作提出了一种基于磷石膏（PhG）和聚丙烯（PP）的新型聚合物复合材料。注塑成型。形态学结果表明，PhG和PP之间的良好亲和性导致聚合物基质中良好的颗粒分散/分布。热表征表明，PhG颗粒提高了PP的热稳定性，在40 wt％的条件下增加了50 A摄氏度。在40 wt％时也获得了最佳拉伸模量，与纯PP相比增加了74％。动态力学分析表明，PhG的添加可以改善PP的粘弹性，从而在动态应力下具有潜在的应用前景。总的来说，可以得出结论，PhG是生产PP复合材料的潜在增强填料，并代表了一种有希望的途径，可将这种废物作为一种新的原材料进行增值，同时解决一些环境问题。

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