OBRABOTKAMETALLOV MATERIAL SCIENCE Vol. 27 No. 1 2025 а b Fig. 9. EDS analysis for 5 wt. % PEEK in Acrylate material: а – spectrum with 70 µm; b – EDS graph for 70 µm spectrum Ta b l e 3 Composition of 5 % wt. PEEK in Acrylate composites material Element Weight (%) Atomic (%) C 70.75 76.32 O 29.25 23.68 Totals 100.00 – As evidenced by the SEM images, the incorporation of 5 wt. % PEEK into the polymeric matrix leads to the formation of characteristic microstructural features. The uniform distribution of the PEEK particles within the matrix contributes to enhanced mechanical properties of the material, such as stiffness and strength, through reinforcement of the polymer structure. Despite the PEEK addition, the composite retains a predominantly amorphous structure, which is favorable for maintaining important characteristics such as impact toughness. The EDS data confirm that the elemental composition of the composite largely remains unchanged, with carbon and oxygen being predominant. The slight increase in oxygen concentration indicates successful PEEK integration into the matrix, suggesting the absence of significant phase separation and inhomogenuity. Characterization of 10 % wt. PEEK Material in Acrylate Surface Morphology and Microstructural Features The morphology and microstructure of a composite material containing 10 wt. % PEEK were investigated using scanning electron microscopy (SEM) at magnifications ranging from 500× to 5,000× and an accelerating voltage of 20 kV (Fig. 10, a, b, c). This approach enabled a detailed examination of the material’s surface morphology and microstructure, as well as an evaluation of the impact of the increased PEEK content on its structure.
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