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Performance of polyolefin composites containing recycled paper fibers

机译：含再生纸纤维的聚烯烃复合材料的性能

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An alternative process to the conventional melt compounding for the incorporation of paper fibers into polyolefins was developed, based on the dispersion of paper fibers in a hot polyolefin solution and the subsequent precipitation of the polymer by cooling, which leads to an homogeneous polyolefin/paper compound. The hardness, tensile and dielectric properties of composite specimens prepared by compression molding of the obtained compound, with filler content ranging from 0 to 40% (w/w), were examined. The tensile strength of the examined composites decreases especially in the case of high-density poly(ethylene) (HDPE) and poly(propylene) (PP) composites at relatively higher filler content. The modulus of elasticity was improved only for the low-density poly(ethylene) (LDPE) composites, in comparison with unfilled specimens, and this behavior is in agreement with the observed improvement in the hardness values of these composites. Dielectric spectroscopy has been used as a characterization method of the prepared composites. It was found that the addition of newspaper fibers to the polyolefins does not significantly affect the insulating properties of the materials. In conclusion, it seemed that polyolefin/paper fiber composites with acceptable properties can be prepared by the solution/precipitation technique studied in this work.
机译：基于将纸纤维分散在热的聚烯烃溶液中并随后通过冷却使聚合物沉淀的方法，开发了一种将纸纤维掺入聚烯烃的常规熔融混料的替代方法。 。检查了通过压缩成型获得的化合物制成的复合样品的硬度，拉伸性能和介电性能，其中填料含量为0至40％（w / w）。所检查的复合材料的拉伸强度下降，特别是在填充剂含量相对较高的高密度聚乙烯（HDPE）和聚丙烯（PP）复合材料的情况下。与未填充的样品相比，仅对于低密度聚乙烯（LDPE）复合材料，其弹性模量得到了改善，并且这种行为与所观察到的这些复合材料的硬度值的改善相一致。介电谱已用作所制备复合材料的表征方法。已经发现，将报纸纤维添加到聚烯烃中不会显着影响材料的绝缘性能。总之，似乎可以通过这项工作中研究的溶液/沉淀技术制备具有可接受性能的聚烯烃/纸纤维复合材料。

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