In this study, nitrile-butadiene rubber (NBR) based nanocomposites reinforced with PVC as a polymeric filler and NiFe₂O₄ as nanofllers with different weight fractions (wt%) were prepared and characterized. The experiments were developed according to response surface methodology (RSM) combined with central composite design (CCD) to optimize the effects of two variable parameters (PVC and NiFe₂O₄) on the mechanical properties. The NiFe₂O₄ nanoparticles (NPs) were synthesized by sol-gel auto-combustion method and, the NBR/PVC/NiFe₂O₄ nanocomposites were prepared by two-roll mill method. The elongation and tensile strength of the optimized nanocomposite were obtained to be 300 % and 18 MPa, respectively. The surface SEM images showed that the NiFe₂O₄ NPs were well distributed in the NBR matrix. Furthermore, cross-sectional SEM images showed that the cracks on the nanocomposite matrix decreased compared to pure NBR. Also, NBR/PVC/NiFe₂O₄ nanocomposite shows weak ferromagnetic behavior at room temperature than NiFe₂O₄NPs. The NiFe₂O₄ NPs and optimal sample of NBR/PVC/NiFe₂O₄ nanocomposites were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), vibrating sample magnetometer (VSM).

在这项研究中，制备并表征了以PVC为聚合物填料和以NiFe ₂ O ₄为纳米填料增强的丁腈橡胶（NBR）基纳米复合材料，这些复合材料具有不同的重量分数（wt％）。根据响应表面方法（RSM）结合中央复合设计（CCD）进行实验，以优化两个可变参数（PVC和NiFe ₂ O ₄）对机械性能的影响。采用溶胶-凝胶自动燃烧法合成了NiFe ₂ O ₄纳米粒子，并合成了NBR / PVC / NiFe ₂ O _4。纳米复合材料是通过两辊碾磨法制备的。优化后的纳米复合材料的伸长率和拉伸强度分别为300％和18 MPa。表面SEM图像显示NiFe ₂ O ₄ NP在NBR基体中分布良好。此外，横截面SEM图像显示，与纯NBR相比，纳米复合材料基体上的裂纹减少了。而且，NBR / PVC / NiFe ₂ O ₄纳米复合材料在室温下的铁磁性能比NiFe ₂ O ₄ NPs弱。NiFe ₂ O ₄ NP和NBR / PVC / NiFe ₂ O _4的最佳样品 通过X射线衍射（XRD），扫描电子显微镜（SEM），能量色散X射线（EDX），振动样品磁力计（VSM）研究了纳米复合材料。