Experimental and theoretical approaches were employed to analyze the static and dynamic mechanical properties of acrylonitrile butadiene styrene (ABS) nanocomposites reinforced with multiwalled carbon nanotube (MWCNT) and nanosilica. Enhanced stiffness and tensile strength were observed for composites with 5% (wt) CNT and 3% (wt) nanosilica. Micromechanical models were highly promising to predict the experimental Young’s modulus by 2% (wt) of nanofiller content, beyond which it deviated due to the nanofiller population and the reduction in interparticle distance. At the optimum content of 5% (wt) MWCNTs in the ABS matrix, enhanced storage and loss moduli and lowered damping peak were observed, which was attributed to the immobilization of the segmental polymer chains. From the DMA parameters, the dynamics of the polymer chain were investigated and the fraction of constrained regions and entanglement density were quantified. These findings demonstrated that composite with higher constrained regions and entanglements exhibited superior mechanical performance. Amongst all composites, 5% (wt) MWCNT-reinforced ABS composite showed an increment in reinforcing efficiency, entanglement density, and constrained regions by 195.6%, 115% and 55.5%, respectively, with regard to 3% (wt) nanosilica-reinforced ABS composite. The effectiveness of dispersion and interfacial adhesion of CNTs with ABS was improved by carboxyl treatment and functionalization with ABS-g-MaH compatibilizer with regard to silane-treated nanosilica/ABS composites. Combined analysis of microstructure, tensile properties and dynamic mechanical parameters such as entanglement density, effectiveness of filler, constrained volume of polymer chains and adhesion factor demonstrated the effectiveness of high aspect ratio carboxyl-treated MWCNTs as a better reinforcing agent in comparison with nanosilica in ABS matrix.

采用实验和理论方法分析了用多壁碳纳米管 (MWCNT) 和纳米二氧化硅增强的丙烯腈丁二烯苯乙烯 (ABS) 纳米复合材料的静态和动态机械性能。对于含有 5% (wt) CNT 和 3% (wt) 纳米二氧化硅的复合材料，观察到增强的刚度和拉伸强度。微机械模型非常有希望通过纳米填料含量的 2% (wt) 预测实验杨氏模量，超出该值则由于纳米填料数量和颗粒间距离的减小而偏离。在 ABS 基体中 5% (wt) MWCNTs 的最佳含量下，观察到增强的存储和损耗模量和降低的阻尼峰，这归因于聚合物链段的固定。从 DMA 参数来看，研究了聚合物链的动力学，并量化了约束区域的分数和缠结密度。这些发现表明，具有更高约束区域和缠结的复合材料表现出优异的机械性能。在所有复合材料中，5% (wt) MWCNT 增强的 ABS 复合材料的增强效率、缠结密度和约束区域分别增加了 195.6%、115% 和 55.5%，相对于 3% (wt) 纳米二氧化硅增强ABS 复合材料。通过羧基处理和 ABS 功能化提高了碳纳米管与 ABS 的分散和界面粘合的有效性 - 这些发现表明，具有更高约束区域和缠结的复合材料表现出优异的机械性能。在所有复合材料中，5% (wt) MWCNT 增强的 ABS 复合材料的增强效率、缠结密度和约束区域分别增加了 195.6%、115% 和 55.5%，相对于 3% (wt) 纳米二氧化硅增强ABS 复合材料。通过羧基处理和 ABS 功能化提高了碳纳米管与 ABS 的分散和界面粘合的有效性 - 这些发现表明，具有更高约束区域和缠结的复合材料表现出优异的机械性能。在所有复合材料中，5% (wt) MWCNT 增强的 ABS 复合材料的增强效率、缠结密度和约束区域分别增加了 195.6%、115% 和 55.5%，相对于 3% (wt) 纳米二氧化硅增强ABS 复合材料。通过羧基处理和 ABS 功能化提高了碳纳米管与 ABS 的分散和界面粘合的有效性 -g- MaH 增容剂与硅烷处理的纳米二氧化硅 / ABS 复合材料有关。对微观结构、拉伸性能和动态机械参数（如缠结密度、填料的有效性、聚合物链的约束体积和粘附因子）的综合分析表明，与 ABS 中的纳米二氧化硅相比，高纵横比羧基处理的多壁碳纳米管作为更好的增强剂的有效性矩阵。