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首页> 外文期刊>Journal of polymer engineering >Evaluation of stearic acid modified industrial lime sludge waste as a filler in high density polyethylene composites
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Evaluation of stearic acid modified industrial lime sludge waste as a filler in high density polyethylene composites

机译：硬脂酸改性工业石灰污泥废料作为高密度聚乙烯复合材料填料的评估

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摘要

Industrial lime sludge (LS), an environmental hazard, is surface modified by stearic acid (SA) in order to reinforce high density polyethylene (HDPE) composites. Uncoated and SA-coated LS-reinforced HDPE composites are prepared and their mechanical, thermal, and morphological properties are studied and compared with each other. FTIR spectroscopy revealed successful grafting of SA onto LS particles while SEM morphology showed that SA coating hinders particle agglomeration in the HDPE matrix at higher filler loading. Mechanical properties such as tensile and flexural strength and modulus, elongation at break, and impact strength increased significantly for SA-coated LS composites due to uniform particle dispersion and effective filler-matrix interfacial interaction. The SA coating increased the entanglement at the filler-matrix interface thereby increasing the thermal decomposition of the coated composites from 500 degrees C to 600 degrees C. Additionally, it also reduced the water absorption rate of the coated composites in comparison with its uncoated counterpart. Thus, SA proves to be an efficient surface modifier for LS to produce HDPE composites with superior properties at a low cost. Needless to say, this study also suggests an alternative LS waste management route which offers benefits of reusing an industrial waste, decreasing the pollution, and developing fresh polymeric products.
机译：工业石灰污泥（LS）对环境有害，可通过硬脂酸（SA）表面改性，以增强高密度聚乙烯（HDPE）复合材料。制备未涂层和SA涂层的LS增强HDPE复合材料，并研究并比较它们的机械，热学和形态学性能。 FTIR光谱显示成功将SA接枝到LS颗粒上，而SEM形态学表明SA涂层阻碍了HDPE基体在较高填料填充量下的颗粒团聚。由于均匀的颗粒分散和有效的填料-基体界面相互作用，SA涂覆的LS复合材料的机械性能（例如拉伸强度和弯曲强度和模量，断裂伸长率和冲击强度）显着提高。 SA涂层增加了填料-基质界面处的缠结，从而使涂覆的复合材料的热分解从500℃增加到600℃。此外，与未涂覆的复合材料相比，它还降低了涂覆的复合材料的吸水率。因此，SA被证明是LS的有效表面改性剂，以低成本生产具有优异性能的HDPE复合材料。不用说，这项研究还提出了另一种LS废物管理途径，该途径可提供重复利用工业废物，减少污染和开发新鲜聚合物产品的好处。

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