In GFRP laminated composites, matrix-fiber delamination is almost unavoidable and a serious problem that significantly hampers the mechanical properties of the composites. This work presents the use of cost-effective silanized milled graphite nanoparticles (GrNPs) to mitigate matrix-fiber delamination in GFRP laminated composites. FESEM and TEM analysis of pristine GrNPs exhibit porous structure consisting of stacked and randomly oriented planes with a large number of defect sites. The silanization of GrNPs (SGrNPs) results in the covering of pores or defect sites and produces the rough surfaces. The SGrNPs (0.5 wt%) reinforced GRFP laminated composites reveal the enhancement in the mechanical properties such as tensile strength (∼33 %), tensile modulus (∼21 %), toughness (∼35 %), flexural strength (∼42.6 %), work of fracture (∼57 %), and short beam strength (∼23 %), respectively. The improvement in the mechanical properties of the composites is due to the mitigation of matrix-fiber delamination by SGrNPs.

在GFRP层压复合材料中，基体纤维分层几乎是不可避免的，并且是严重妨碍复合材料机械性能的严重问题。这项工作提出了使用具有成本效益的硅烷化铣削石墨纳米颗粒（GrNPs）来减轻GFRP层压复合材料中基体纤维分层的方法。原始GrNPs的FESEM和TEM分析显示出多孔结构，该结构由堆叠且随机定向的平面组成，具有大量缺陷部位。GrNPs（SGrNPs）的硅烷化导致孔或缺陷部位的覆盖，并产生粗糙的表面。SGrNPs（0.5 wt％）增强的GRFP层压复合材料显示出机械性能的增强，例如拉伸强度（〜33％），拉伸模量（〜21％），韧性（〜35％），弯曲强度（〜42.6％） ，断裂功（〜57％），和短光束强度（〜23％）。复合材料机械性能的改善归因于SGrNP减少了基体纤维分层。