Dielectric spectroscopy and structural characterization of nano-filler-loaded epoxy resin

Thakor, Sanketsinh; Rana, V. A.; Vankar, H. P.; Pandit, T.R.

doi:10.1142/s2010135x21500119

Cited by 24 publications

(5 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thakor et al investigated the dielectric properties of four different nanofiller-loaded neat epoxy composites. 99 Zinc oxide (ZnO), silicon dioxide (SiO 2 ), aluminum oxide (Al 2 O 3 ), and titanium oxide (TiO 2 ) were used as nanofillers, each added at 1 wt% to the neat epoxy. Dielectric measurements were performed at 300.15 K and within the frequency range of 1 kHz to 2 MHz.…”

Section: Ds Of Polymer Nanocompositesmentioning

confidence: 99%

“…Comparison between frequency dependent (a) dielectric constant, (b) loss tangent, (c) and alternating current conductivity of neat epoxy and different nanofiller loaded neat epoxy nanocomposites. Reproduced under terms of the CC‐BY license 99 . Copyright 2021, S. G. Thakor, V. A. Rana, H. P. Vankar and T. R. Pandit, published by World Scientific Publishing Company.…”

Section: Ds Of Polymer Nanocompositesmentioning

confidence: 99%

See 1 more Smart Citation

Dielectric characterization of fiber‐ and nanofiller‐reinforced polymeric materials

Quader,

Narayanan,

Caldona

2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

This review provides an in‐depth analysis of the electrical responses and relaxation behaviors of various polymeric materials including fiber‐reinforced polymer composites, polymer nanocomposites (PNC), and nanofiller‐reinforced polymeric films and coatings using dielectric spectroscopy (DS). The underlying theory of DS, corresponding instrumentation, various dielectric parameters, relevant equations, interpretations, and polarization mechanisms are thoroughly explored. The impact of synthetic and natural fibers and a diverse range of nanofillers on the dielectric responses and relaxation mechanisms of fiber‐reinforced composites, and PNC and films, respectively, are also examined. For each summarized article, we provide an overview of the composite or film preparation, followed by concise explanations of the dielectric behaviors under diverse conditions, including variations in temperature, frequency, moisture levels, fiber/filler ratios, and chemical treatment. In essence, this review contributes to a nuanced understanding of the intricate relationship between material structure, properties, and performance via DS data interpretation across a spectrum of scenarios.

show abstract

Section: Ds Of Polymer Nanocompositesmentioning

confidence: 99%

Section: Ds Of Polymer Nanocompositesmentioning

confidence: 99%

Dielectric characterization of fiber‐ and nanofiller‐reinforced polymeric materials

Quader,

Narayanan,

Caldona

2024

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

“…The peaks in the range from 1000 to 1100 cm −1 correspond to C-N groups and indicate curing of the epoxy and the hardener. The peaks identified at 1181 cm −1 and ~1032 cm −1 are assigned to the asymmetrical aliphatic C-O stretching vibrations [33,35]. The peak at 826 cm −1 is associated with the 1,4-substitution of the aromatic ring of the epoxy resin (R).…”

Section: Ftir-atr Spectroscopymentioning

confidence: 99%

Influence of HNT-ZnO Nanofillers on the Performance of Epoxy Resin Composites for Marine Applications

Şomoghi,

Mihai,

Teodorescu

et al. 2024

Coatings

View full text Add to dashboard Cite

Epoxy resin was conjugated with halloysite nanotubes (HNT) and different types of ZnO nanoparticles (commercial ZnO and modified ZnO-ODTES) to obtain HNT-ZnO/epoxy resin composites. These ZnO nanoparticles (ZnO NPs) were utilized with the intention to enhance the interfacial bonding between the epoxy resin and the reinforcing agent (HNT). The properties of resulted epoxy resin composites were characterized by various methods such as FTIR-ATR, TGA, DSC, TEM-EDX, and Nanoindentation analyses. The thermal properties of the epoxy resin composites were enhanced to a greater extent by the addition of HNT-ZnO nanofillers. DSC testing proved that the modification in the glass transition temperature can be due to the physical bonding between the epoxy resin and filler (HNT and/or ZnO). It was seen that the epoxy resin modified with HNT and ZnO-ODTES has the highest resistance to scratching by having a good elastic recovery as well as high values for surface hardness (~187.6 MPa) and reduced modulus (2980 MPa). These findings can pave the way for the developing of ZnO-based marine coatings with improved properties.

show abstract

“…Figure 5a shows the FTIR spectra of the composites, 2270 and 2236 cm À1 are the absorption peaks of cyanate functional group ( OCN), 1756 cm À1 is the absorption peak of oxazolidone, 1693 cm À1 is the absorption peak of isocyanate, 1566 and 1369 cm À1 are the absorption peaks of triazine ring, 1085 cm À1 is the absorption peak of Si O Si, 915 cm À1 is the absorption peak of epoxy group. 32,33 The disappearance of cyanate functional groups and epoxy groups indicates that the curing reaction has been completed. As shown in Figure 6 there are complex reactions between cyanate and epoxy, and the direction of reaction is related to the content of epoxy.…”

Section: Morphological Characterizationmentioning

confidence: 99%

High heat‐resistant (250°C) epoxy resin composites with excellent dielectric properties

Wang

Feng

Zhang

et al. 2022

J of Applied Polymer Sci

View full text Add to dashboard Cite

Insulated gate bipolar transistor (IGBT) is the core of electric energy conversion and circuit control, which is widely used in the field of electric vehicles. Higher service temperature, higher power density, and higher operating voltage are the tendency for IGBT in which packing materials have to possess more stable temperature resistance and better insulating properties. In this work, cyanate ester (CE) and polyhedral oligomeric silsesquioxanes (POSS) are introduced into epoxy with various filling ratio to improve the dielectric and thermal properties. The curing process of every system is determined by non‐isothermal differential scanning calorimetry (DSC). N and Si element distribution mappings indicate that there are good compatibility between POSS, CE, and epoxy. The dielectric test shows that the dielectric constant decreases from 4.34 to 2.84 at 1 MHz and from 4.76 to 2.93 at 1 kHz when the filling ratio is 60 wt%. Meanwhile, the DC breakdown strength increases from 172.7 to 286.4 kV/mm. Furthermore, the glass transition temperature (Tg) increases from 180 to 263°C and the yield of residual carbon increases from 6.2% to 23.7%. A new packing material, which can endure 250°C of operating temperature and has excellent dielectric properties has been synthesized.

show abstract

Dielectric spectroscopy and structural characterization of nano-filler-loaded epoxy resin

Cited by 24 publications

References 73 publications

Dielectric characterization of fiber‐ and nanofiller‐reinforced polymeric materials

Dielectric characterization of fiber‐ and nanofiller‐reinforced polymeric materials

Influence of HNT-ZnO Nanofillers on the Performance of Epoxy Resin Composites for Marine Applications

High heat‐resistant (250°C) epoxy resin composites with excellent dielectric properties

Contact Info

Product

Resources

About