Вивчення впливу масової частки порошків різних типів на теплопровідність та гомогенність суміші епоксидної смоли

• Datum: 2026
• Hauptverfasser: Omar, S.K., Khadeer, E.E.
• Format: Artikel
• Sprache: Englisch
• Veröffentlicht: Publishing house "Academperiodika" 2026
• Schlagworte: оксид алюмiнiю (Al2O3); вуглецевi наночастинки (CNP); епоксидна сумiш; ослаблення гамма-випромiнювання; тест на гомогеннiсть; оксид нiкелю (NiO); полiмерний композит; сканувальна електронна мiкроскопiя (SEM); теплопровiднiсть; оксид цинку (ZnO)
• Online Zugang: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2023408
• Назва журналу: Ukrainian Journal of Physics

In this study investigated the effects of weight fractions (10–50 wt%) of carbon nanoparticles (CNP), Al2O3, NiO, and ZnO powders on the thermal conductivity and homogeneity of a 50 : 50 epoxy blend resin. Scanning electron microscopy (SEM) revealed distinct surface morphologies: NiO composites showed smooth surfaces with minimal gaps at low concentrations but developed large voids at 50 wt%, while Al2O3 surfaces exhibited fractures and increased blistering at higher loadings. ZnO and CNP composites displayed rough, porous surfaces with significant agglomeration at 50 wt%. Thermally, all fillers enhanced conductivity relative to the unreinforced epoxy (0.938 W/(m · K)), with NiO exhibiting the highest improvement (32.5–46.3%), followed by ZnO (28–38.7%), Al2O3 (19.5–31.3%), and CNP (11.2–16.7%). Homogeneity testing via γ-ray attenuation (241Am source) demonstrated that ZnO composites achieved the highest homogeneity (lowest Δμ% and standard deviation σμ = 0.004–0.02%), whereas NiO composites were the least homogeneous. Crucially, ZnO’s uniform particle distribution also provided superior gamma-ray shielding (μ = 0.108–0.205 cm−1), while NiO’s heterogeneity compromised its attenuation efficacy.