The main subject of the project is to obtain a natural filler polymer composite through the rotational molding process (rotomolding). For the purpose of comparison, two varieties of a matrix polymer were used: linear low-density polyethylene (PE) as a standard material used in this technology and poly(lactid acid) biopolymer (PLA). Ground buckwheat husk (BH) was used as a natural filler. Due to the key aspect of the size and morphology of the processed materials, three different BH particle sizes were used during the study: <50 μm, 50–200 μm and 200–500 μm. The filler content for PE/BH samples varied from 1 to 30 wt%, and for the PLA/BH it was 1–25%, however, the maximum volume content was similar for both materials (≈22%). Technological tests showed difficulties in obtaining composite samples with the addition of the smallest BH fraction (<50 μm). The prepared composites have been subjected to a mechanical properties assessment (tensile tests), thermo-mechanical analysis (DMTA, Vicat tests), and thermal analysis (DSC). The mechanical analysis indicated deterioration in most material characteristics – the significant porosity of the prepared composites was the main reason for that. On the other hand, the thermomechanical properties were not affected by the filler addition, which can be considered a positive feature. The DSC analysis did not reveal any correlation between the filler content and crystallinity of PE/BH materials. For the PLA/BH samples a slight increase was observed, however, it was insignificant as an effective nucleation phenomenon.

该项目的主要主题是通过滚塑工艺（滚塑）获得天然填料聚合物复合材料。为了进行比较，使用了两种基质聚合物：作为该技术中使用的标准材料的线性低密度聚乙烯（PE）和聚乳酸生物聚合物（PLA）。荞麦皮（BH）被用作天然填料。由于加工材料的尺寸和形态的关键方面，在研究过程中使用了三种不同的BH颗粒尺寸：<50μm，50–200μm和200–500μm。PE / BH样品的填料含量为1至30 wt％，PLA / BH样品的填料含量为1-25％，但是，两种材料的最大体积含量相似（约22％）。技术测试表明，添加最小的BH分数（< 50μm）。制备的复合材料已经过机械性能评估（拉伸测试），热机械分析（DMTA，维卡测试）和热分析（DSC）。力学分析表明，大多数材料特性都有所下降–所制备复合材料的显着孔隙率是主要原因。另一方面，热机械性能不受填料添加的影响，这可以认为是积极的特征。DSC分析没有显示出PE / BH材料的填料含量和结晶度之间的任何相关性。对于PLA / BH样品，观察到轻微的增加，但是对于有效的成核现象而言却微不足道。Vicat测试）和热分析（DSC）。力学分析表明，大多数材料特性都有所下降–所制备复合材料的显着孔隙率是主要原因。另一方面，热机械性能不受填料添加的影响，这可以认为是积极的特征。DSC分析没有显示出PE / BH材料的填料含量和结晶度之间的任何相关性。对于PLA / BH样品，观察到轻微的增加，但是对于有效的成核现象而言却微不足道。Vicat测试）和热分析（DSC）。力学分析表明，大多数材料特性都有所下降–所制备复合材料的显着孔隙率是主要原因。另一方面，热机械性能不受填料添加的影响，这可以认为是积极的特征。DSC分析没有显示出PE / BH材料的填料含量和结晶度之间的任何相关性。对于PLA / BH样品，观察到轻微的增加，但是对于有效的成核现象而言却微不足道。热机械性能不受填料添加的影响，这可以认为是一个积极特性。DSC分析没有显示出PE / BH材料的填料含量和结晶度之间的任何相关性。对于PLA / BH样品，观察到轻微的增加，但是对于有效的成核现象而言却微不足道。热机械性能不受填料添加的影响，这可以认为是一个积极特性。DSC分析没有显示出PE / BH材料的填料含量和结晶度之间的任何相关性。对于PLA / BH样品，观察到轻微的增加，但是对于有效的成核现象而言却微不足道。