The widespread uses of natural fibre/filler-reinforced composites are the recent advanced trend in the research field. This study investigates the effects of a relatively low concentration of graphene nanoplatelets (GNPs) in microwood particles-reinforced epoxy composites to enhance their physical, mechanical, thermal and fracture properties.The hybrid composites were prepared with hand layup techniques with different weight percentages of wood particles (0, 2.5, 5, 7.5 and 10) at a constant 0.5% of GNPs. The surface modification of untreated and treated wood particles was analysed with X-ray diffractometry (XRD) and Fourier transform infrared spectroscopy, showing that treated wood particles have a better interlocking bond with GNPs and epoxy matrix. The increments of 35.55% tensile strength, 30.64% flexural strength, 22.98% hardness, 41.67% impact strength, 16.05% conductivity, 26.71% fracture toughness and 74.38% fracture energy were recorded with WGPC-5.0 hybrid composites compared to WGPC-0. The maximum storage modulus (2.4 GPa) and loss modulus (0.26 GPa) also confirmed better interfacial bonding strength and stiffness for WGPC-5.0 hybrid composites with the highest glass transition temperature of 92 °C. The corrosion rate and water absorption properties were higher for the higher weight percent of wood particles.The morphological analysis confirmed that higher loading of wood particles (7.5–10%) resulted in agglomeration, thus weak bonding of particles with epoxy matrix and therefore decrements in the properties were observed.

天然纤维/填料增强复合材料的广泛使用是该研究领域的最新发展趋势。本研究调查了微木颗粒增强环氧树脂复合材料中相对低浓度的石墨烯纳米片 (GNP) 对增强其物理、机械、热和断裂性能的影响。粒子 (0, 2.5, 5, 7.5 和 10) 在 GNP 的恒定 0.5%。用 X 射线衍射仪 (XRD) 和傅立叶变换红外光谱分析了未处理和处理过的木颗粒的表面改性，表明处理过的木颗粒与 GNP 和环氧树脂基体具有更好的互锁键。35.55%抗拉强度、30.64%抗弯强度、22.98%硬度、41的增量。与 WGPC-0 相比，WGPC-5.0 混合复合材料记录了 67% 的冲击强度、16.05% 的导电率、26.71% 的断裂韧性和 74.38% 的断裂能。最大储能模量 (2.4 GPa) 和损耗模量 (0.26 GPa) 也证实了 WGPC-5.0 混合复合材料具有更好的界面结合强度和刚度，最高玻璃化转变温度为 92°C。木材颗粒的重量百分比越高，腐蚀速率和吸水性能就越高。 形态分析证实，木材颗粒的较高负载量（7.5-10%）会导致团聚，从而使颗粒与环氧树脂基体的结合较弱，因此在观察了这些特性。最大储能模量 (2.4 GPa) 和损耗模量 (0.26 GPa) 也证实了 WGPC-5.0 混合复合材料具有更好的界面结合强度和刚度，最高玻璃化转变温度为 92°C。木材颗粒的重量百分比越高，腐蚀速率和吸水性能就越高。 形态分析证实，木材颗粒的较高负载量（7.5-10%）会导致团聚，从而使颗粒与环氧树脂基体的结合较弱，因此在观察了这些特性。最大储能模量 (2.4 GPa) 和损耗模量 (0.26 GPa) 也证实了 WGPC-5.0 混合复合材料具有更好的界面结合强度和刚度，最高玻璃化转变温度为 92°C。木材颗粒的重量百分比越高，腐蚀速率和吸水性能就越高。 形态分析证实，木材颗粒的较高负载量（7.5-10%）会导致团聚，从而使颗粒与环氧树脂基体的结合较弱，因此在观察了这些特性。