Akademik Veri Yönetim Sistemi
7th European Symposium of Photopolymer Science, İstanbul, Türkiye, 19 - 22 Eylül 2022, ss.75
Electromagnetic wave pollution has become a major problem with the widespread use of electromagnetic devices in civil, commercial, and military fields. [1,2] The way to prevent electromagnetic wave interference is to develop materials that can absorb the energies of electromagnetic waves. Radar absorbing materials (RAMs) should be supported by high absorption efficiency, wide absorption bandwidth, low density, and high operational stability. In general, the absorption ability of a material is mainly determined by its relative complex permittivity and dielectric constant, impedance matching, and absorption capacity. The properties and absorption capabilities of many materials such as metal/metal oxide nanoparticles, ferrites, carbon-based materials, and conductive polymers have been investigated and reported. [3,4] For the most reported RAMs, homogeneous mixing, and distribution of components with different qualities in the matrix is quite difficult. [5] This leads to discontinuous polymer network formation. Therefore, a series of epoxy acrylate-based nanocomposite materials were prepared by using the advantage of the photochemical method that supports homogeneous and continuous polymeric network formation. Since the silver, cobalt and silver/cobalt nanostructures were synthesized simultaneously with the film formation, a uniform nano-dispersion and continuity throughout the polymeric film were obtained. The thermal, dielectric, and surface properties of these nanocomposite materials, whose RAM properties will be examined in further studies, were investigated.
This study is supported by Yildiz Technical University Scientific Research Projects Coordination Unit under Project No FBA-2022-5102.
Gonul S. Batibay is supported by the 100/2000 YOK doctoral scholarship in the sub-field of Defense Technologies and also the TUBITAK BIDEB 2211/A National PhD Scholarship Program.
References
[1] Guo, S., Bao, Y., Li, Y., Guan, H., Lei, D., Zhao, T., Zhong, B., Li, Z. (2022). Super broadband absorbing hierarchical CoFe alloy/porous carbon@carbon nanotubes nanocomposites derived from metal-organic frameworks. Journal of Materials Science & Technology 118 218–228. DOI: 1016/j.jmst.2021.11.054
[2] Malere, C.P.R., Donati, B., Eras, N., Silva, V.A., Lona, L.F. (2021). Electromagnetic evaluation of radar absorbing materials based on conducting polypyrrole and organic–inorganic nanocomposite of polypyrrole/kaolinite. Journal of Applied Polymer Science, 139, 52023. DOI: 10.1002/app.52023
[3] Zhang, Y., Yao, M., Liu, C., Zhao, H., Miao, X., & Xu, F. (2020). Reduced Graphene Oxide-CoFe2O4/FeCo Nanoparticle Composites for Electromagnetic Wave Absorption. ACS Applied Nano Materials, 3 (9), 8939–8948. DOI: 10.1021/ acsanm.0c01693
[4] Ahmad, H., Tariq, A., Shehzad, A., Faheem, M. S., Shafiq, M., Rashid, I. A., Afzal, A., Munir, A., Riaz, M. T., Haider, H. T., Afzal, A., Qadir, M. B., & Khaliq, Z. (2019). Stealth technology: Methods and composite materials—A review. Polymer Composites, 40 (12), 4457–4472. DOI: 10.1002/pc.25311
[5] Ye, Z., Wang, K., Li, X., & Yang, J. (2022). Preparation and characterization of ferrite/carbon aerogel composites for electromagnetic wave absorbing materials. Journal of Alloys and Compounds, 893, 162396. DOI: 10.1016/j.jallcom.2021.162396
Keywords: Nanocomposites, Nanoparticles, Photopolymerization, UV-Curing