Polymeric polycaprolactone (PCL) matrix composites reinforced with alumina and niobium pentoxide were prepared in a laboratory internal mixer and studied by differential scanning calorimetry (DSC), tensile and impact tests, in addition to the particle distribution in the matrix. The objective of this study was to evaluate the influence of the oxide content on the rheology, crystallization, and mechanical properties of these composites. According to the rheological analysis, the composites were well mixed and the polymer matrix used in the composites can be considered thermally stable during processing. The effect of the fillers on degradation during processing was minimal. DSC analyses indicate that, in general, the increase in the filler content does not change the crystallization temperature, irrespectively of the oxide added. For the niobium pentoxide composites, crystallinity does not appear to be affected by an increase in filler content or cooling rate. Both tensile strength and elongation at break decreased with filler addition while impact strength decreased and Young's modulus was apparently unaffected. There was good distribution of the oxide particles in the polymer matrix.

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聚己内酯（PCL）/氧化铝和PCL /五氧化二铌复合材料：流变，结晶和机械性能

在实验室内部混合器中制备了用氧化铝和五氧化二铌增强的聚合物聚己内酯（PCL）基复合材料，并通过差示扫描量热法（DSC），拉伸和冲击试验研究了基体中的颗粒分布。这项研究的目的是评估氧化物含量对这些复合材料的流变，结晶和机械性能的影响。根据流变学分析，将复合材料充分混合，并且可以认为复合材料中使用的聚合物基质在加工过程中是热稳定的。填料对加工过程中降解的影响极小。DSC分析表明，一般而言，填料含量的增加不会改变结晶温度，而与所添加的氧化物无关。对于五氧化二铌复合材料，结晶度似乎不受填料含量或冷却速率增加的影响。拉伸强度和断裂伸长率都随着填料的添加而降低，而冲击强度降低，并且杨氏模量显然不受影响。氧化物颗粒在聚合物基质中分布良好。