The natural rubber/graphene quantum dots (GQDs) nanocomposites were prepared and their properties have been studied. Graphene oxide prepared via modified Hummer’s method was the precursor used to synthesis graphene quantum dots. The two-roll mill was used for the compounding of the natural rubber/graphene quantum dot (NR/GQD) nanocomposites. The nanocomposites are characterized using UV–visible Spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR), Transmission Electron Microscopy (TEM), X-ray Diffraction Analysis (XRD), Thermogravimetric Analysis (TGA). The mechanical and diffusion properties of the natural rubber/graphene quantum dot (GQDs) nanocomposites were also investigated. The TEM analysis revealed that GQD has tiny spherical shaped morphology with an average size value of 5 nm. The FTIR and XRD studies clearly showed the strong interaction between GQDs and NR and the peak at 8.49⁰ in the diffractogram of nanocomposites indicates the uniform distribution of GQDs in matrix of NR. The incorporation of 1phr of GQD shows a 30%, 13% and 23% of enhancement in respective tensile strength, elongation at break and young’s modulus of the NR/GQD nanocomposite compared to that of pure natural rubber. The study found that the incorporation of GQDs into the natural rubber matrix dramatically increased the mechanical and thermal properties of the of NR. The nanocomposite with 1.5 phr of GQD showed higher thermal stability and is ascribed to the uniform dispersion and interaction of GQD in the NR matrix. The GQD will act as a protective barrier and thus it arrests the thermal decomposition by absorbing the heat that liberated in the matrix.

制备了天然橡胶/石墨烯量子点（GQDs）纳米复合材料并对其性能进行了研究。通过改进的 Hummer 方法制备的氧化石墨烯是用于合成石墨烯量子点的前体。二辊轧机用于合成天然橡胶/石墨烯量子点（NR/GQD）纳米复合材料。纳米复合材料使用紫外可见光谱、傅里叶变换红外光谱 (FTIR)、透射电子显微镜 (TEM)、X 射线衍射分析 (XRD)、热重分析 (TGA) 进行表征。还研究了天然橡胶/石墨烯量子点 (GQD) 纳米复合材料的机械和扩散性能。TEM 分析表明 GQD 具有微小的球形形态，平均尺寸值为 5 nm。纳米复合材料的衍射图中的⁰表示 GQD 在 NR 基体中的均匀分布。与纯天然橡胶相比，加入 1 份 GQD 后，NR/GQD 纳米复合材料的拉伸强度、断裂伸长率和杨氏模量分别提高了 30%、13% 和 23%。研究发现，将 GQD 掺入天然橡胶基质中，大大提高了 NR 的机械和热性能。含有 1.5 份 GQD 的纳米复合材料表现出更高的热稳定性，这归因于 GQD 在 NR 基质中的均匀分散和相互作用。GQD 将充当保护屏障，因此它通过吸收在基体中释放的热量来阻止热分解。