ABSTRACT

In this study, a combination of “Cordia Dichotoma” natural fiber and “granite powder” as filler has been reinforced into epoxy resin making a hybrid composite. In this study, unused industrial waste obtained from the granite polishing industry, known as granite powder (GP) is being utilized for its usefulness as a reinforcement in polymer composite. Hybrid composite was prepared by reinforcing a constant Cordia Dichotoma fiber content of 20 wt. % and varying the granite powder weight (wt. %) percentages (0, 5, 10, 15 and 20) into epoxy matrix. Mechanical properties (tensile, flexural and impact) of hybrid composites were investigated. Following the results obtained, granite powder could be evidenced as a good filler material for the betterment of composite’s mechanical properties. Also, the ability of this filler material is proved in decreasing water absorption and chemical resistance. SEM morphology was performed to investigate the bonding and distribution of granite powder within the Cordia Dichotoma reinforced composite material. Besides, presence of chemical functional groups in the composite was traced by Infra-Red Spectroscopy. Also, Thermo-Gravimetric Analysis (TGA) was carried out and the composite was found to be thermally stable up to 455°C.

摘要

在这项研究中，“Cordia Dichotoma”天然纤维和“花岗岩粉末”作为填料的组合已被增强到环氧树脂中，从而制成混合复合材料。在这项研究中，从花岗岩抛光行业获得的未使用的工业废料，称为花岗岩粉末 (GP)，正被用于作为聚合物复合材料的增强材料。通过增强恒定的 20 wt. Cordia Dichotoma 纤维含量来制备混合复合材料。% 并改变花岗岩粉末重量 (wt. %) 百分比 (0, 5, 10, 15 和 20) 到环氧树脂基质中。研究了混合复合材料的机械性能（拉伸、弯曲和冲击）。根据所获得的结果，可以证明花岗岩粉末是改善复合材料机械性能的良好填充材料。还，事实证明，这种填充材料具有降低吸水性和耐化学性的能力。进行 SEM 形貌研究以研究花岗岩粉末在 Cordia Dichotoma 增强复合材料中的结合和分布。此外，复合材料中化学官能团的存在通过红外光谱进行了追踪。此外，还进行了热重分析 (TGA)，发现复合材料在高达 455°C 的温度下具有热稳定性。