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首页> 外文期刊>Journal of Applied Polymer Science >The effect of alkali treatment and filler size on the properties of sawdust/UPR composites based on recycled PET wastes
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The effect of alkali treatment and filler size on the properties of sawdust/UPR composites based on recycled PET wastes

机译：碱处理和填料尺寸对基于再生PET废料的木屑/ UPR复合材料性能的影响

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In this study, natural sawdust fillers from acacia were mixed with unsaturated polyester resin (UPR), which was prepared by recycling of polyethylene terephthalate (PET) waste bottles to prepare sawdust/UPR composite. PET wastes were recycled through glycolysis and depolymerized to produce a formulation for the resin. The effects of alkali treatment, filler content, and filler size on the tensile, flexural, hardness, and water absorption of the composites were investigated. The results show that the modulus of both tensile and flexural increased with increasing filler contents, but the tensile and flexural strength of composites decreased. The size of sawdust also played a significant role in the mechanical properties, with smaller size sawdust producing higher strength and modulus. This is due to the greater surface area for filler-matrix interaction. The results also show that alkali treatment causes a better adhesion between sawdust and UPR matrix and improves the mechanical properties of the composites. Furthermore, surface treatment reduced the water absorption of composites. (c) 2008 Wiley Periodicals, Inc. J Appl Polym Sci 109: 3651-3658, 2008.
机译：在这项研究中，将阿拉伯树胶的天然木屑填料与不饱和聚酯树脂（UPR）混合，该不饱和聚酯树脂是通过回收聚对苯二甲酸乙二醇酯（PET）废液瓶而制备的，以制备木屑/ UPR复合材料。 PET废料通过糖酵解回收并解聚，以生产树脂配方。研究了碱处理，填料含量和填料尺寸对复合材料的拉伸，弯曲，硬度和吸水率的影响。结果表明，随着填料含量的增加，拉伸模量和弯曲模量均增加，而复合材料的拉伸强度和弯曲强度却降低。锯末的尺寸在机械性能中也起着重要作用，锯末的尺寸较小会产生较高的强度和模量。这是由于填料-基质相互作用的表面积更大。结果还表明，碱处理使锯末与UPR基体之间具有更好的附着力，并改善了复合材料的机械性能。此外，表面处理降低了复合材料的吸水率。 （c）2008 Wiley Periodicals，Inc. J Appl Polym Sci 109：3651-3658，2008。

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