Agubra Victor A, Owuor Peter S, Hosur Mahesh V
Materials Research and Education Center, Auburn University, 275 Wilmore Laboratories, Auburn, AL 36849, USA.
Center for Advanced Materials, Tuskegee University, Tuskegee, AL 36088, USA.
Nanomaterials (Basel). 2013 Aug 28;3(3):550-563. doi: 10.3390/nano3030550.
Common dispersion methods such as ultrasonic sonication, planetary centrifugal mixing and magnetic dispersion have been used extensively to achieve moderate exfoliation of nanoparticles in polymer matrix. In this study, the effect of adding three roll milling to these three dispersion methods for nanoclay dispersion into epoxy matrix was investigated. A combination of each of these mixing methods with three roll milling showed varying results relative to the unmodified polymer laminate. A significant exfoliation of the nanoparticles in the polymer structure was obtained by dispersing the nanoclay combining three roll milling to magnetic and planetary centrifugal mixing methods. This exfoliation promoted a stronger interfacial bond between the matrix and the fiber, which increased the final properties of the E-glass/epoxy nanocomposite. However, a combination of ultrasound sonication and three roll milling on the other hand, resulted in poor clay exfoliation; the sonication process degraded the polymer network, which adversely affected the nanocomposite final properties relative to the unmodified E-glass/epoxy polymer.
常见的分散方法，如超声处理、行星离心混合和磁力分散，已被广泛用于在聚合物基体中实现纳米颗粒的适度剥离。在本研究中，研究了添加三辊研磨对这三种分散方法将纳米粘土分散到环氧基体中的效果。这些混合方法中的每一种与三辊研磨相结合，相对于未改性的聚合物层压板都显示出不同的结果。通过将纳米粘土与磁力和行星离心混合方法相结合进行三辊研磨分散，在聚合物结构中获得了纳米颗粒的显著剥离。这种剥离促进了基体与纤维之间更强的界面结合，从而提高了E玻璃/环氧纳米复合材料的最终性能。然而，另一方面，超声处理和三辊研磨相结合导致粘土剥离效果不佳；超声处理过程使聚合物网络降解，相对于未改性的E玻璃/环氧聚合物，这对纳米复合材料的最终性能产生了不利影响。
