Polymer composites have good mechanical, friction, durability, and wear performance after being reinforced with waste or nanofiller. These features make them flexible in many structural applications. This study was carried out to improve the mechanical performance of polymer composites using silica-based, waste, and nanomaterials. To achieve this, marble dust of millimeter size, silica fume of micrometer size, and Nano-SiO₂ of nanometer size were added separately or in combination to the polymer matrix. The samples were tested to obtain the compressive strength, tensile strength, ultrasonic pulse wave velocity, dynamic modulus of elasticity, toughness, and density of reinforced polymer composites. The results of the tests on the polymer composites indicated that the best ratios were 30%, 5% and 1% for separately added marble dust, silica fume and nano-silica groups, respectively, while the contribution of nano-silica to marble dust/silica fume was the optimum when added by 1%. Moreover, the results showed that adding marble dust to polymer composites increased ductility while adding silica fume and nano-silica reduced the ductility of the samples. Additionally, the microstructural properties of the polymer composites with waste marble dust and silica fume, and nano-SiO₂ additives were evaluated using a scanning electron microscope (SEM) to provide a close relationship between the morphological structure and mechanical properties. This study opens up a new way for added value using waste materials like marble dust/silica fume as well as nanomaterials in polymer composite applications.

聚合物复合材料经废料或纳米填料增强后，具有良好的机械，摩擦，耐用性和磨损性能。这些功能使它们在许多结构应用中具有灵活性。进行这项研究是为了改善使用二氧化硅基，废料和纳米材料的聚合物复合材料的机械性能。为此，需要使用毫米级的大理石粉尘，微米级的硅粉和Nano-SiO ₂将纳米级的纳米级颗粒单独或组合添加到聚合物基质中。测试样品以获得增强聚合物复合材料的抗压强度，抗张强度，超声脉冲速度，动态弹性模量，韧性和密度。对聚合物复合材料的测试结果表明，分别添加的大理石粉尘，硅粉和纳米二氧化硅基团的最佳比例分别为30％，5％和1％，而纳米二氧化硅对大理石粉尘/当添加1％时，硅粉是最佳的。此外，结果表明，向聚合物复合材料中添加大理石粉尘可提高延展性，而添加硅粉和纳米二氧化硅则会降低样品的延展性。此外，含有废大理石粉尘和硅粉的聚合物复合材料的微观结构特性，使用扫描电子显微镜（SEM）对_2种添加剂进行了评估，以提供形态结构与机械性能之间的密切关系。这项研究开辟了一种新途径，可在大理石复合材料应用中使用大理石粉尘/硅粉以及纳米材料等废料来增加价值。