DGEBA epoxy polymer composite panels (MB: DGEBA-EPCPs): structural, optical, and dielectric properties-leanings and appliances in optical electronics

Jilani, W.; Gouadria, S.; Bouzidi, A.; Al-Harbi, F. F.; Omri, K.; Guermazi, H.; Yahia, I.S.

doi:10.1007/s11082-022-04496-9

Cited by 6 publications

(4 citation statements)

References 39 publications

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“…The nano-reinforced epoxy resin has garnered a lot of interest over the last 30 years because it can improve the electrical properties of epoxy [7]. Several methods have been suggested to illustrate the improved dielectric properties [8][9][10][11][12]. For example, George Tsagaropoulos and Adi Eisenberg explained the mechanism of formation of immobilized nanolayers between the epoxy chain and the nanoparticles at the glass transition temperature, which contributes to the constraining of the epoxy chain mobility [13].…”

Section: Introductionmentioning

confidence: 99%

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

Al Soud,

Daradkeh,

Knápek

et al. 2023

Phys. Scr.

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To improve the electrical and mechanical properties of epoxy resin for their wide scope of applications, a modified epoxy nanocomposite was produced in this study by incorporating SiO2 nanoparticles of 15-30 nm in size.The electric properties of epoxy nanocomposite at room temperature at a frequency range of 10-2 – 107 Hz were examined. To determine the impact of nanoparticles on the epoxy composition, the epoxy composite was evaluated by scanning electron microscopy- energy dispersive X-ray spectroscopy, fourier transform infrared spectra, and raman spectra . The epoxy with 15 wt.% of SiO2 nanoparticles samples had a lower permittivity, loss number, conductivity, and capacitance than the unfilled epoxy. While it has a higher impedance and modulus than the unfilled epoxy. Accordingly, the effect of immobilized layers and the effect of the Lichtenecker-Rothe logarithmic mixing rule on the electrical and mechanical properties were clarified.

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Section: Introductionmentioning

confidence: 99%

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

Al Soud,

Daradkeh,

Knápek

et al. 2023

Phys. Scr.

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“…Epoxy resins (EPs) are important thermoset materials that are extensively used in chemical, electrical, transport, and defense industries [ 1 , 2 , 3 , 4 ]. These materials can be used in various applications, such as coatings, adhesives, electrical and electronic parts, fiber reinforced, optical fiber, and flame retardant material, because of their excellent chemical resistance, adhesive strength, mechanical strength, electrical insulation, thermal stability, dimensional stability, and cost-effectiveness [ 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. However, EPs are highly flammable materials with a limiting oxygen index (LOI) for combustion of ≤19.8 [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Thiol-Functionalized Polysilsesquioxane/Phosphorus Flame-Retardant Blends on the Flammability and Thermal, Mechanical, and Volatile Organic Compound (VOC) Emission Properties of Epoxy Resins

Kim,

Baek,

Chang

et al. 2024

Polymers

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In this study, thiol-functionalized ladder-like polysesquioxanes end-capped with methyl and phenyl groups were synthesized via a simple sol-gel method and characterized through gel permeation chromatography (GPC), Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), and thermogravimetric analysis (TGA). Additionally, epoxy blends of different formulations were prepared. Their structural, flame-retardant, thermal, and mechanical properties, as well as volatile organic compound (VOC) emissions, were determined using differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), TGA, scanning electron microscopy (SEM), limiting oxygen index (LOI), cone calorimetry, and a VOC analyzer. Compared to epoxy blends with flame retardants containing elemental phosphorus alone, those with flame retardants containing elemental phosphorus combined with silicon and sulfur exhibited superior thermal, flame-retardant, and mechanical properties with low VOC emissions. SEM of the residual char revealed a dense and continuous morphology without holes or cracks. In particular, LOI values for the combustion of methyl and phenyl end-capped polysilsesquioxane mixtures were 32.3 and 33.7, respectively, compared to 28.4% of the LOI value for the blends containing only phosphorus compounds. The silicon–sulfur–phosphorus-containing blends displayed reduced flammability concerning the blends using a flame retardant containing only phosphorus. This reflects the cooperative effects of various flame-retardant moieties.

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“…Enhancements in the dielectric and mechanical properties of polymers are being made possible by developments in the field of nanotechnology. Lately, composites based on different organic and inorganic fillers such as carbon [6], alumina oxide [7], titania oxide [8] are described with better dielectric characteristics as compared to pure epoxy. In a different study [1], [6], composites had a lower loss factor as a function of frequency than pure epoxy.…”

Section: Introductionmentioning

confidence: 99%

“…In a different study [1], [6], composites had a lower loss factor as a function of frequency than pure epoxy. Some studies have shown that nano-and micro-particles have a significant influence on the aging behavior of polymers [1], [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of High Concentration of Silica Nanoparticles on the Dielectric Spectra

Soud,

Daradkeh,

Knápek

et al. 2023

Proceedings II of the 29st Conference STUDENT EEICT 2023: Selected Papers.

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In the presented work, we report the dielectric behavior of epoxy-silicon oxide composites in the temperature range 240-300 K, over the frequency range 10 -2 Hz -10 7 Hz. The measuring apparatus was based on the Novocontrol Alpha Analyser and the measured data were analyzed and interpreted using the Havriliak -Negami equation. The master curves of the real part of permittivity and the dielectric loss number were obtained by time-temperature superposition principle, and the results showed that the nano-composite had a much higher loss factor. Through the analysis of the origin of the dielectric response in epoxy/silica composite, the reason for the different dielectric relaxation behaviors of the nano-composite, and the pure epoxy was discussed.

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DGEBA epoxy polymer composite panels (MB: DGEBA-EPCPs): structural, optical, and dielectric properties-leanings and appliances in optical electronics

Cited by 6 publications

References 39 publications

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

Electrical characteristics of different concentration of silica nanoparticles embedded in epoxy resin

Influence of Thiol-Functionalized Polysilsesquioxane/Phosphorus Flame-Retardant Blends on the Flammability and Thermal, Mechanical, and Volatile Organic Compound (VOC) Emission Properties of Epoxy Resins

Influence of High Concentration of Silica Nanoparticles on the Dielectric Spectra

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