Study on the dispersion of graphene in a rubber matrix based on ultrasonic vibration

Graphene’s unique structure and exceptional properties offer broad application prospects in the field of rubber materials. However, graphene tends to aggregate, leading to uneven distribution within the rubber matrix. To improve the dispersion of graphene, a graphene-synthetic rubber composite was prepared using ultrasonic vibration technology, with rubber and graphene powder as the raw materials. Raman spectroscopy was employed to characterize and analyze the dispersion of graphene in the rubber matrix after ultrasonic treatment while scanning electron microscopy (SEM) was used to observe the morphological features. Experimental results show that, compared with the original sample, the Raman spectra of the ultrasonically treated samples exhibit narrower G and 2D peak widths, higher G peak intensity, and lower D peak intensity. These findings indicate a reduction in structural defects and improved crystallinity. SEM images further confirm the structural integrity and uniform dispersion of graphene in the composite. In conclusion, ultrasonic vibration is an effective method to enhance the dispersion and size uniformity of graphene within a rubber matrix.