The article explores viscoelastic and mechanical property analysis of graphene decorated with graphene quantum dots (GDGQD) reinforced epoxy composite. Tensile, nanoindentation, and nano‐dynamic mechanical analysis (DMA) tests were conducted on the composite with 0 to 1 wt% filler variation (an interval of 0.25 wt% maintained). The hardness and elastic modulus for two different loading conditions under a frequency range of 10 to 250 Hz were performed. The viscoelastic properties described through loss tangent and storage modulus graphically and the various factors such as modulus and depth of penetration were influenced by force frequency and mobility of the molecular chain. The results revealed the role of GDGQDs as filler material for enhancing the nanomechanical and tensile properties of the epoxy matrix. The differences in the properties can be ascribed to the filler interfacial bonding with the polymer matrix at the molecular level. The macro‐level properties like tensile properties following the same trend as that of the micro‐level properties like nano‐indentation and nano‐DMA results. Further, with the GDGQD aspect ratio, and assuming three‐dimensionally filled randomly orientation of filler, the Halpin‐Tsai model was satisfied with the experimental tensile modulus values.

中文翻译：

---

石墨烯量子点增强的环氧复合材料修饰的石墨烯的粘弹性和力学特性

本文探讨了用石墨烯量子点（GDGQD）增强的环氧复合材料装饰的石墨烯的粘弹性和力学性能分析。在填料变化为0至1 wt％（保持0.25 wt％的区间）的复合材料上进行了拉伸，纳米压痕和纳米动态力学分析（DMA）测试。在10到250 Hz的频率范围内，针对两种不同的负载条件执行了硬度和弹性模量。通过损耗角正切和储能模量以图形方式描述的粘弹性质以及诸如模量和渗透深度的各种因素受力频率和分子链迁移率的影响。结果揭示了GDGQD作为填充材料在增强环氧基质的纳米机械和拉伸性能方面的作用。性质的差异可归因于填料在分子水平上与聚合物基质的界面键合。宏观特性（如拉伸性能）的趋势与微观特性（如纳米压痕和纳米DMA结果）的趋势相同。此外，利用GDGQD长宽比，并假设填充物的三维填充随机方向，Halpin-Tsai模型的实验拉伸模量值令人满意。