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UTILIZATION OF HAZELNUT SHELLS AS FILLER IN LDPE/PP BASED POLYMERCOMPOSITES

机译：LDPE / PP基聚合物复合材料中榛子壳作为填料的用途

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摘要

Polymer based composites manufactured using thermoplastic and lignocellulosic materials are increased recently. Hazelnut shells as lignocellulosic were considered as a potential filler for polymer composites. This study measured the effect of filler loading on the mechanical properties of low density polyethylene (LDPE) and polypropylene (PP) based polymer composites. PP and LDPE were used as thermoplastic polymer. Hazelnut shells flours (HSF) were used as filler. The blends of PP, LDPE and HSF were compounded using single screw extruder and test samples were prepared through injection molding. The tensile, flexural and impact properties of the produced composites were determined in accordance with ASTM D638, ASTM D790, and ASTM D256, respectively. As a result, with increase of filler loading for PP, tensile strength (TS), elongation at break (EatB) and flexural strength (FS) were decreased while tensile modulus (TM) and flexural modulus (FM) were increased. Impact strength (IS) of PP based polymer composites were not changed. Also the addition of filler loading into LDPE matrix reduced TS, EatB, and IS while FS, FM and TM were increased. In this study, manufactured all composites provided flexural properties for the plastic lumber applications by the ASTM D 6662 (2001) standard.
机译：使用热塑性和木质纤维素材料制造的基于聚合物的复合材料最近有所增加。榛子壳作为木质纤维素被认为是聚合物复合材料的潜在填料。这项研究测量了填料填充量对低密度聚乙烯（LDPE）和聚丙烯（PP）基聚合物复合材料的机械性能的影响。 PP和LDPE用作热塑性聚合物。榛子壳粉（HSF）用作填充剂。使用单螺杆挤出机混合PP，LDPE和HSF的共混物，并通过注塑成型制备测试样品。分别根据ASTM D638，ASTM D790和ASTM D256确定所产生的复合材料的拉伸，挠曲和冲击性能。结果，随着PP填料用量的增加，拉伸强度（TS），断裂伸长率（EatB）和弯曲强度（FS）降低，而拉伸模量（TM）和弯曲模量（FM）增加。 PP基聚合物复合材料的冲击强度（IS）不变。同样，向LDPE基质中添加填料会减少TS，EatB和IS，而增加FS，FM和TM。在这项研究中，所有制造的复合材料均按照ASTM D 6662（2001）标准为塑料板材提供了挠曲性能。

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