To develop the utilization of recycled plastics made from fishing ropes waste, which have been drifted ashore on the seaside, mechanical and structural properties of the waste were analyzed. Fourier transform infrared spectrometry and differential scanning calorimetry measurements revealed that the fishing ropes waste used in this study was composed of polyethylene (PE) fiber or a mixture of PE and polypropylene (PP) fibers. The mechanical properties of the recycled PE plastic substantially changed after different heat treatment condition, i.e., quenching at 0 °C or heating at 70 and 110 °C. The results showed that this recycled material became stiffer and more brittle as the crystallinity increased. In contrast, the mechanical properties of the recycled PE/PP plastic were not dependent on the heat treatment; the mechanical properties of this material remained relatively low regardless of the selected heat treatment. This observed lack of improvement occurred because PE and PP are non-compatible, so the structure inside the material was phase-separated. By adding ground rice hull (RH) as a modifier to the PE/PP resin, the elastic modulus of the composites increased substantially, whereas the degree of elongation decreased. The improvement in mechanical properties was remarkable for the composites containing an average RH particle diameter of 17 μm.

为了开发利用渔绳废料制成的可回收塑料，这些塑料已漂泊在海边，对废料的机械和结构特性进行了分析。傅里叶变换红外光谱法和差示扫描量热法测量结果表明，本研究中使用的钓鱼绳废料由聚乙烯（PE）纤维或PE和聚丙烯（PP）纤维的混合物组成。在不同的热处理条件下，即0°C淬火或70和110°C加热后，再生PE塑料的机械性能发生了显着变化。结果表明，随着结晶度的增加，这种回收材料变得更硬，更脆。相反，再生的PE / PP塑料的机械性能不依赖于热处理。无论选择何种热处理，该材料的机械性能都保持相对较低。由于PE和PP不相容，因此观察到的改进不足，因此材料内部的结构发生了相分离。通过向PE / PP树脂中添加稻壳（RH）作为改性剂，复合材料的弹性模量显着提高，而伸长率却下降。对于平均RH粒径为17μm的复合材料，机械性能的改善非常显着。复合材料的弹性模量显着增加，而伸长率降低。对于平均RH粒径为17μm的复合材料，机械性能的改善非常显着。复合材料的弹性模量显着增加，而伸长率降低。对于平均RH粒径为17μm的复合材料，机械性能的改善非常显着。