The emergence of micro and nano-based inorganic oxide fillers with optimal filler-loadings further enhances the required insulation characteristics of neat epoxy. During manufacturing and service application, insulators and dielectrics face mechanical stresses which may alter their basic characteristics. Keeping this in mind, the facts' influence of mechanical stresses and fillers on dielectric properties of polymeric insulators of two epoxy/silica composites were fabricated and thoroughly analyzed for dielectric characteristics under ramped mechanical compressions relative to the unfilled sample. Before compression, epoxy nanocomposites exhibited responses having an average dielectric constant of 7.68 with an average dissipation factor of 0.18. After each compression, dielectric properties of all samples were analyzed. The dissipation factor and the dielectric constant trends of each sample are plotted against a suitable frequency range. It was observed that after the successive compressions up to 25 MPa, the dielectric properties of epoxy micro-silica composites were highly affected, having an average final dielectric constant of 9.65 times that of the uncompressed sample and a dissipation factor of 2.2 times that of the uncompressed sample, and these were recorded.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8473307 | PMC |
| http://dx.doi.org/10.3390/polym13183150 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
CO- and HS-adsorbed one-dimensional AlSi structures for gas sensing applications.
R Soc Open Sci
January 2025
Institute of Southeast Vietnamese Studies, Thu Dau Mot University, Thu Dau Mot, Binh Duong, Vietnam.
The potential applications of low-dimensional materials continue to inspire significant interest among researchers worldwide. This study investigates the properties of one-dimensional AlSi monolayers, specifically AlSi nanoribbons, and their adsorption behaviour with CO and HS molecules. The electronic, magnetic and optical properties of these systems are calculated using density functional theory and the Vienna Ab initio Simulation Package.
View Article and Find Full Text PDFMagnetoelectric properties and Morin type spin transitions of Na-doped GaFeO.
J Phys Condens Matter
January 2025
Department of Physics, University of Kerala, Karyavattom 695581, Thiruvananthapuram, Kerala, India.
The effects of Na doping on the structure magnetic, electric, and magnetoelectric properties of GaFeOwere studied. Rietveld refinement of the XRD data reveals the formation of a single-phase trigonal structure with no impurity on Na doping up to 50% and a significant increase in lattice strain with doping. FTIR and Raman analysis further supported the phase purity of the samples.
View Article and Find Full Text PDFProgrammable Electromagnetic Wave Absorption via Tailored Metal Single Atom-Support Interactions.
Adv Mater
January 2025
Laboratory of Advanced Materials, Institute of Optoelectronics, Fudan University, Shanghai, 200438, P. R. China.
Metal single atoms (SA)-support interactions inherently exhibit significant electrochemical activity, demonstrating potential in energy catalysis. However, leveraging these interactions to modulate electronic properties and extend application fields is a formidable challenge, demanding in-depth understanding and quantitative control of atomic-scale interactions. Herein, in situ, off-axis electron holography technique is utilized to directly visualize the interactions between SAs and the graphene surface.
View Article and Find Full Text PDFEffect of Physiologically Relevant Dehydration on the Dielectric Properties of Ground Beef.
Bioelectromagnetics
January 2025
Department of Electrical and Software Engineering, University of Calgary, Calgary, Alberta, Canada.
Readily available animal tissue, such as ground beef, is a convenient material to represent the dielectric properties of biological tissue when validating microwave imaging and sensing hardware and techniques. The reliable use of these materials depends on the accurate characterization of their properties. In this work, the effect of physiologically relevant levels of dehydration on ex vivo tissue samples is quantified while controlling for variation within and between samples.
View Article and Find Full Text PDFImproved dielectric performance of graphene oxide reinforced plasticized starch.
PLoS One
January 2025
Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh.
High dielectric constants with less dielectric loss composites is highly demandable for technological advancements across various fields, including energy storage, sensing, and telecommunications. Their significance lies in their ability to enhance the performance and efficiency of a wide range of devices and systems. In this work, the dielectric performance of graphene oxide (GO) reinforced plasticized starch (PS) nanocomposites (PS/GO) for different concentrations of GO nanofiller was studied.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!