Novel in situ synthesis of copper oxide nanoparticles in epoxy network: kinetics, composite mechanical and dielectric properties

Elena Bobina, Kazan National Research Technical University named after A.N. Tupolev-KAI, 10, K. Marx str., 420011, Kazan, Rus-sian Federation
Maxim Danilaev, Kazan National Research Technical University named after A.N. Tupolev-KAI, 10, K. Marx str., 420011, Kazan, Rus-sian FederationFollow
Safaa.M.R.H. Hussein, University of Karbala, Karbala, 56001, Iraq
Sergey Karandashov, Kazan National Research Technical University named after A.N. Tupolev-KAI, 10, K. Marx str., 420011, Kazan, Russian Federation
Vladimir Kuklin, Kazan National Research Technical University named after A.N. Tupolev-KAI, 10, K. Marx str., 420011, Kazan, Rus-sian Federation
Ivan Lounev, Kazan Federal University, 18, Kremlevskaya st., 420008, Kazan, Russian Federation
Konstantin Faizullin, Kazan National Research Technical University named after A.N. Tupolev-KAI, 10, K. Marx str., 420011, Kazan, Russian Federation

Abstract

>Mechanical properties of polymer composites with dispersed nanoparticles (CDNP) depend on interaction between the nanoparticles and the polymer matrix. Strength of polymer composites significantly decreases when there is no interaction between dispersed nanoparticles and the polymer. This limits the application of functional polymer composites with dispersed nanoparticles. In this study, CDNP based on ED-20 epoxy resin with dispersed copper oxide nanoparticles was obtained.These nanoparticles were synthesized in epoxy resin before curing: the nanoparticles were obtained by decomposition of copper hydroxide by heating its solution in ED-20 resin.The kinetics of copper oxide nanoparticles formation in CDNP samples were studied using two independent methods: electron microscopy and dielectric spectroscopy.The results of these studies demonstrate that complete decomposition of copper hydroxide to polycrystalline copper oxide nanoparticles in a solution of copper hydroxide in epoxy resin occurs after 10 hours at 90оС. Nanoparticles were needle-shaped: the average length was 310 nm, the width was 80 nm.Copper oxide nanoparticles volume fraction in the samples after their exposure to high temperature for more than 10 hours was 0.28%. It was demonstrated that mechanical properties of epoxy-based polymer composite increased when the size of copper oxide nanoparticles decreased. After the complete transition of copper hydroxide into copper oxide nanoparticles, a significant increase in mechanical properties was observed. Flexural modulus increased from 3.4±0.2GPa(for the samples without nanoparticles) to 5.5±0.6GPa, the ultimate strength increased accordingly from 53.3±4 N/mm2 to 85±5 N/mm2. A two-fold decrease in ultimate strain should be noted: 1.5±0.1% compared to ED-20 epoxy resin-based polymer without nanoparticles.

Recommended Citation

Bobina, Elena; Danilaev, Maxim; Hussein, Safaa.M.R.H.; Karandashov, Sergey; Kuklin, Vladimir; Lounev, Ivan; and Faizullin, Konstantin (2024) "Novel in situ synthesis of copper oxide nanoparticles in epoxy network: kinetics, composite mechanical and dielectric properties," Karbala International Journal of Modern Science: Vol. 10 : Iss. 2 , Article 10.
Available at: https://doi.org/10.33640/2405-609X.3357