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首页> 外文期刊>Journal of Applied Polymer Science >Effects of the glass bead content and the surface treatment on the mechanical properties of polypropylene composites
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Effects of the glass bead content and the surface treatment on the mechanical properties of polypropylene composites

机译：玻璃珠含量和表面处理对聚丙烯复合材料力学性能的影响

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摘要

Polypropylene composites filled with glass beads (GBs) were prepared by means of a twin-screw extruder. The tensile properties and impact-fracture strength of the composites were measured at room temperature to identify the effects of the GB content and surface treatment on the mechanical properties. The results show that the relative elastic modulus increased nonlinearly, whereas the tensile strength decreased with increasing GB volume fraction (φ_f). The notched impact strength increased with increasing φ_f when φ_f was less than 11%, and then, it decreased; this might have been related to the GB aggregation in the case of higher concentration. The mechanical properties of the composite systems in which the GB surface was treated with silane coupling agent were better than those of the composite systems filled with the untreated GBs under the same conditions. Furthermore, the impact-fractured surfaces were observed with a scanning electron microscope to understand the interfacial morphology between the inclusion and the matrix and to examine the toughening mechanisms.
机译：借助于双螺杆挤出机制备填充有玻璃珠（GB）的聚丙烯复合材料。在室温下测量复合材料的拉伸性能和冲击断裂强度，以鉴定GB含量和表面处理对机械性能的影响。结果表明，相对弹性模量非线性增加，而抗拉强度随GB体积分数（φ_f）的增加而降低。当φ_f小于11％时，缺口冲击强度随φ_f的增加而增加，然后降低。在较高浓度的情况下，这可能与GB聚集有关。在相同条件下，用硅烷偶联剂处理GB表面的复合体系的机械性能优于未处理GB填充的复合体系的机械性能。此外，用扫描电子显微镜观察冲击破裂的表面，以了解夹杂物和基体之间的界面形态并检查增韧机理。

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