The study investigates the thermo‐mechanical properties of isotactic polypropylene (iPP) hybrid composites in reference to various amounts of particle‐ and fiber‐shaped inorganic fillers. Three grades of hybrid composites were prepared as a function of filler amount: 5, 10, and 20 wt% and different ratios of glass fiber (GF) and calcium carbonate (CaCO₃). The main objective is to describe the relationship between the hybridization efficiency and mechanical performance of polypropylene‐based composites. The analysis of the thermo‐mechanical properties of the composites shows that both the total amount of the filler and the ratio of GF and CaCO₃ clearly influence the properties of the composites. Hybrid composites with the highest amount of the GF display improved thermo‐mechanical stability. The presence of well‐dispersed CaCO₃ in the composites was found to improve elongation at break and Vicat softening temperature values. Even though it is glass fiber, which shows higher filler effectiveness and visibly reinforces the composite samples, causing an increase in tensile strength or reinforcing efficiency, replacing up to 50% of this filler with calcium carbonate does not result in a considerable deterioration of the properties of the material.

中文翻译：

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碳酸钙（CaCO3）改性的混合等规聚丙烯玻璃纤维增​​强复合材料（GFRC）的热机械性能

该研究针对各种颗粒和纤维状无机填料，研究了全同立构聚丙烯（iPP）杂化复合材料的热机械性能。制备三种等级的杂化复合材料，作为填料量的函数：5、10和20 wt％，以及玻璃纤维（GF）和碳酸钙（CaCO ₃）的不同比例。主要目的是描述聚丙烯基复合材料的杂交效率与机械性能之间的关系。复合材料的热机械性能分析表明，填料总量以及GF和CaCO ₃的比例明显影响复合材料的性能。GF含量最高的杂化复合材料显示出改善的热机械稳定性。发现复合物中存在良好分散的CaCO ₃可以改善断裂伸长率和维卡软化温度值。即使是玻璃纤维，它显示出更高的填充效果并明显增强了复合材料样品的强度，从而导致拉伸强度或增强效率的提高，但用碳酸钙替代多达50％的这种填充剂并不会导致性能显着下降。材料。