Synthesis, spectral, thermal studies and dielectric behavior of functionalized TiO 2 -loaded diglycidyl epoxy nanocompos
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Synthesis, spectral, thermal studies and dielectric behavior of functionalized TiO2‑loaded diglycidyl epoxy nanocomposite film P. Nisha1 · S. Suresh2 · K. Jayamoorthy3 · K. I. Dhanalekshmi4 · C. Ravichandran5,6 Received: 16 May 2020 / Revised: 29 July 2020 / Accepted: 12 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract The dielectric and thermal behavior of 4-aminobutyltriethoxysilane-functionalized TiO2 nanoparticle (ABTES-TiO2 NPs)-loaded diglycidyl ether of bisphenol-A (DGEBA-GY260) nanocomposites was chosen for investigation. The synthesized TiO2-ABTES-DGEBA nanocomposite films were distinguished using FT-IR spectra to access the chemical bonding between fillers and epoxy resin. SEM and AFM analysis facilitated access to the homogeneously dispersed nanoparticles in epoxy matrix. Triethylenetetramine (TEPA), also denoted as tetrene, is utilized as a curing agent. TGA and DSC analysis are used to investigate the thermal behavior of epoxy nanocomposite samples. Moreover, thermodynamic parameters were computed using Coats–Redfern method. There is an increase in thermal behavior with an increase in loading concentrations. The dielectric measurements were studied in the frequency range from 50 to 5 × 106 Hz and at temperatures 30, 60 and 120 °C, which exhibited outstanding results. The variation in dielectric constant, dielectric loss and AC conductivity makes ABTES-TiO2-loaded epoxy nanocomposites is the most compatible for high-performance electrical and thermal applications. The highlight of the work is the temperature and frequency that are especially more pronounced in 5%-TiO2-ABTES-DGEBA and 7%-TiO2-ABTES-DGEBA samples. The complete analysis put forward that loading epoxy resins with T iO2-ABTES augment the electrical and thermal properties of epoxy resin. Keywords Epoxy resin · Spectral studies · Dielectric · AC conductivity
* C. Ravichandran [email protected] Extended author information available on the last page of the article
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Introduction Epoxy resin is generally utilized as insulators for high-voltage instruments because of its outstanding insulating behavior. It guards electrical materials against dust, moisture and short circuiting. In certain cases, epoxy resin is mixed with nanofillers in order to augment their mechanical, chemical, thermal and electrical properties. The nanofiller addition either deteriorates or enhances the electrical performance of epoxy resin based on the type of nanofillers and intensity of nanofillers. Also, the electrical performance can be enhanced by altering the particle size of the nanofillers used. There are several continual research contributions made on polymer nanocomposite materials act as effective insulators for electrical and electronic materials [1–3]. The polymer nanocomposites or nanodielectrics are generally prepared from polymers uniformly filled with particles of dimension ranging from 1 to 100 nm and with concentration varying from 1 to 10 wt%. To enhance further the e
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