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首页> 美国卫生研究院文献>Polymers >Fabrication of Porous Recycled HDPE Biocomposites Foam: Effect of Rice Husk Filler Contents and Surface Treatments on the Mechanical Properties
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Fabrication of Porous Recycled HDPE Biocomposites Foam: Effect of Rice Husk Filler Contents and Surface Treatments on the Mechanical Properties

机译：多孔再生HDPE生物复合泡沫的制备：稻壳填料含量和表面处理对机械性能的影响

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摘要

In this study, a biodegradable, cheap and durable recycled high-density polyethylene (rHDPE) polymer reinforced with rice husk (RH) fibre was fabricated into a foam structure through several processes, including extrusion, internal mixing and hot pressing. The effect of filler loading on the properties of the foam and the influence of RH surface treatments on the filler–matrix adhesion and mechanical properties of the composite foam were investigated. The morphological examination shows that 50 wt.% filler content resulted in an effective dispersion of cells with the smallest cell size (58.3 µm) and the highest density (7.62 × 1011 sel/cm ). This small cell size benefits the mechanical properties. Results indicate that the tensile strength and the Young’s modulus of the alkali-treated RH/rHDPE composite foam are the highest amongst the treatments (10.83 MPa and 858 MPa, respectively), followed by UV/O , which has shown considerable increments compared with the untreated composite. The flexural and impact tests also show the increment in strength for the composite foam after chemical treatment. Although the UV/O surface treatment has minor influence on the mechanical enhancement of the composite foam, this method may be a reliable surface treatment of the fibre-reinforced composite.
机译：在这项研究中，通过稻壳（RH）纤维增强的可生物降解，廉价且耐用的再生高密度聚乙烯（rHDPE）聚合物通过挤压，内部混合和热压等多种过程被制成泡沫结构。研究了填料填充量对泡沫性能的影响以及RH表面处理对复合材料泡沫的填料-基体附着力和机械性能的影响。形态学检查表明，填料含量为50wt。％导致具有最小孔尺寸（58.3μm）和最高密度（7.62×1011 sel / cm）的孔有效分散。这种小的孔尺寸有利于机械性能。结果表明，碱处理的RH / rHDPE复合泡沫的拉伸强度和杨氏模量在处理中最高（分别为10.83 MPa和858 MPa），其次是UV / O，与处理后相比有相当大的增加。未经处理的复合材料。挠曲和冲击测试还显示了化学处理后复合泡沫的强度增加。尽管UV / O表面处理对复合泡沫的机械增强影响不大，但该方法可能是纤维增强复合材料的可靠表面处理。

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