Akademik Veri Yönetim Sistemi
Heat Transfer Research, cilt.57, sa.4, ss.67-80, 2026 (Scopus)
Many fields, including aviation, automotive, construction, and the weapons industry, widely use composite materials.
In recent years, nanoparticle (NP) additions have been made to improve both the mechanical and thermal properties
of composite materials. In this study, the thermal conductivity coefficient k (W/m K) values and hardness values of
nanoparticle–epoxy composite materials prepared by adding carbon black, bismuth oxide NP, cerium oxide NP, nickel
oxide NP, and strontium oxide NP into epoxy resin at weight percentages of 0.3 wt.%, 0.6 wt.%, and 1 wt.% were
measured and compared with a pure (control) sample. The results of the study showed that some of the composite
materials produced by adding to the epoxy resin exhibited improvements in thermal conductivity and hardness values,
while others yielded poorer results compared to the control sample. Among all the samples, while a 29.72% decrease was
measured in the thermal diffusivity value of the sample with 1% strontium compared to the pure sample, a 246.75%
increase was measured in the sample with 0.6% nickel. Additionally, among all the samples, a 56.38% increase in
thermal conductivity values was measured in the 1% strontium-doped sample compared to the pure sample, while a
69.91% decrease was measured in the 1% nickel-doped sample. In terms of hardness values, when compared to the pure
sample, the highest value was observed in the sample with 1% carbon black, at 34.79%, while the lowest value was in
the sample with 0.3% strontium, at 8.55%.