ABSTRACT

The main focus of this research is to analyze the physical, mechanical, and dynamic-mechanical properties of the high-performance polymer composite. The composites are fabricated by hot compressing basalt and aramid fibers with UHMWPE (Ultra High Molecular Weight Poly Ethylene) at 200°C temperature and 200 bar pressure. Four different weight fractions of composites were fabricated namely UBA 1 having 70% UHMWPE, 10% basalt and 20% aramid; UBA 2 having 70% UHMWPE, 15% basalt and 15% aramid; UBA 3 having 70% UHMWPE, 20% basalt and 10% aramid; UBA 4 having 70% UHMWPE, 30% basalt and no aramid. The tensile strength, impact strength, hardness, and storage modulus of UBA 4 were found to be greater compared to the other composites. The UBA1 shows the highest flexural strength compared to the other samples. From XRD, the average crystalline size was calculated as 3.02 nm. The SEM image of the composites shows good adhesion of fibers and matrix in both UBA 1 and UBA 4. The dynamic mechanical properties of UBA 4 were also found to be better compared to all four samples for structural application.

摘要

这项研究的主要重点是分析高性能聚合物复合材料的物理、机械和动态机械性能。该复合材料是通过将玄武岩和芳纶纤维与 UHMWPE（超高分子量聚乙烯）在 200°C 温度和 200 bar 压力下热压制成的。制造了四种不同重量比例的复合材料，即 UBA 1 具有 70% UHMWPE、10% 玄武岩和 20% 芳纶；UBA 2 具有 70% UHMWPE、15% 玄武岩和 15% 芳纶；UBA 3 具有 70% UHMWPE、20% 玄武岩和 10% 芳纶；UBA 4 具有 70% UHMWPE、30% 玄武岩且不含芳族聚酰胺。与其他复合材料相比，UBA 4 的拉伸强度、冲击强度、硬度和储能模量更高。与其他样品相比，UBA1 显示出最高的弯曲强度。从XRD，平均晶体尺寸计算为 3.02 nm。复合材料的 SEM 图像显示，UBA 1 和 UBA 4 中的纤维和基体都具有良好的粘附性。与用于结构应用的所有四种样品相比，还发现 UBA 4 的动态机械性能更好。