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Journal articles on the topic 'Dielectric Properties - Nanocomposites'

Author: Grafiati

Published: 7 September 2023

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1

Feng, Zunpeng, Yanan Hao, Jiameng Zhang, Jing Qin, Limin Guo, and Ke Bi. "Dielectric Properties of Two-Dimensional Bi2Se3 Hexagonal Nanoplates Modified PVDF Nanocomposites." Advances in Polymer Technology 2019 (July 3, 2019): 1–8. http://dx.doi.org/10.1155/2019/8720678.

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Topological insulator two-dimensional (2D) Bi2Se3 hexagonal nanoplates, which are highly insulating in the bulk and have a conductive topological surface state, have been prepared via an “EG- (ethylene glycol-) sol” method and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), and scanning electron microscopy (SEM). Bi2Se3/PVDF (polyvinylidene fluoride) nanocomposites with various Bi2Se3 contents have been fabricated by a tape-casting method. The microstructure and dielectric performance of the Bi2Se3/PVDF nanocomposites are studied. The dielectric constant of th

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2

Li, Qi, Feihua Liu, Tiannan Yang, et al. "Sandwich-structured polymer nanocomposites with high energy density and great charge–discharge efficiency at elevated temperatures." Proceedings of the National Academy of Sciences 113, no. 36 (2016): 9995–10000. http://dx.doi.org/10.1073/pnas.1603792113.

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The demand for a new generation of high-temperature dielectric materials toward capacitive energy storage has been driven by the rise of high-power applications such as electric vehicles, aircraft, and pulsed power systems where the power electronics are exposed to elevated temperatures. Polymer dielectrics are characterized by being lightweight, and their scalability, mechanical flexibility, high dielectric strength, and great reliability, but they are limited to relatively low operating temperatures. The existing polymer nanocomposite-based dielectrics with a limited energy density at high t

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3

Yang, Jiaming, Congji Liu, Changji Zheng, Hong Zhao, Xuan Wang, and Mingze Gao. "Effects of Interfacial Charge on the DC Dielectric Properties of Nanocomposites." Journal of Nanomaterials 2016 (2016): 1–11. http://dx.doi.org/10.1155/2016/2935202.

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The interfacial charge phenomenon of MgO/low-density polyethylene (LDPE) and SiO2/LDPE nanocomposites was measured by synchrotron radiation small-angle X-ray scattering. Based on the Porod theory, the Porod curve of SiO2/LDPE nanocomposite shows negative divergence but the LDPE and MgO/LDPE do not, which reveals that interfacial charge may exist in the SiO2/LDPE nanocomposite. The DC dielectric properties of the nanocomposites are closely related to the interfacial charge. Experimental results show that the SiO2/LDPE nanocomposite has lower DC conductivity, less space charge, and higher DC bre

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4

Polsterova, Helena. "Dielectric Properties of Nanocomposites Based on Epoxy Resin." ECS Transactions 105, no. 1 (2021): 461–66. http://dx.doi.org/10.1149/10501.0461ecst.

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Nanocomposites are subject of research in many fields of science. Electrical technology focused on the study of electrical properties of nanocomposites including breakdown strength, relative permittivity, resistivity and other. This paper describes the results of measurement of electrical parameters of a nanocomposite at various temperatures. The nanocomposite matrix was casting epoxy resin and nanoparticles were made of TiO2 powder at different concentrations.

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Li, Yan Xia, Jin Long Xie, Zhen Ming Chu, Xu Sheng Wang, and Xi Yao. "Dielectric and Energy Storage Properties of Polyvinylidene Fluoride/Barium Titanate Nanocomposites." Advanced Materials Research 833 (November 2013): 365–69. http://dx.doi.org/10.4028/www.scientific.net/amr.833.365.

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The combination of nanoparticles with high relative permittivity and polymers with high dielectric strength offers a potential to obtain processable nanocomposites with high dielectric performance. In this work, polyvinylidene fluoride (PVDF)-barium titanate (BT) nanocomposites were prepared by spin-coating technique. The surface of BT nanoparticles was treated by titanate coupling agent NDZ101. The dielectric and energy storage properties of the system were studied as a function of BT content. The experimental results showed that the dielectric constant of the nanocomposites increased with th

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6

Pattanshetti, Virappa Virupaxappa, G. M. Shashidhara, and Mysore Guruswamy Veena. "Dielectric and thermal properties of magnesium oxide/poly(aryl ether ketone) nanocomposites." Science and Engineering of Composite Materials 25, no. 5 (2018): 915–25. http://dx.doi.org/10.1515/secm-2016-0273.

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AbstractIn the present study, dielectric and thermal properties of poly(aryl ether ketone) (PAEK)-nanocomposites with varying weight percentage of magnesium oxide (MgO) have been reported. The thermal properties of PAEK/MgO nanocomposites were studied using differential scanning calorimetry, thermogravimetric analysis, thermo-mechanical analysis and thermal conductivity. Transmission electron microscopy of the developed nanocomposites shows agglomerate-free dispersion of MgO nanoparticles in PAEK matrix. From the dielectric properties, dielectric constant of 13 was achieved for 10 wt% PAEK/MgO

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Alam, Rabeya Binta, Md Hasive Ahmad, S. F. U. Farhad, and Muhammad Rakibul Islam. "Significantly improved dielectric performance of bio-inspired gelatin/single-walled carbon nanotube nanocomposite." Journal of Applied Physics 131, no. 12 (2022): 124103. http://dx.doi.org/10.1063/5.0077896.

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In this study, the dielectric properties of gelatin/single-walled carbon nanotube (Gel/SWCNT) nanocomposite were evaluated. The nanocomposites were synthesized by a simple solution casting method. The electron transport properties of the nanocomposites were studied by the dielectric and impedance spectroscopy techniques. A dielectric constant as high as 104 and a loss tangent of 0.91 were obtained for the Gel/SWCNT nanocomposite material at 100 Hz. The dielectric permittivity data of the nanocomposites were fitted by the modified Cole–Cole model to estimate the dielectric strength and the rela

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8

Dang, Yue-Mao, Ming-Sheng Zheng, and Jun-Wei Zha. "Improvements of dielectric properties and energy storage performances in BaTiO3/PVDF nanocomposites by employing a thermal treatment process." Journal of Advanced Dielectrics 08, no. 06 (2018): 1850043. http://dx.doi.org/10.1142/s2010135x18500431.

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The influence of thermal treatment on the dielectric properties and energy storage performances of a classical dielectric nanocomposite system (barium titanate/polyvinylidene fluoride PVDF) was discussed systematically. The results demonstrated that the permittivity of thermal treated nanocomposites increased and dielectric loss decreased compared with the untreated system. In addition, the energy density was also greatly improved due to the inclined residual polarization. For example, the energy density of the treated nanocomposite with 50[Formula: see text]vol.% nanofillers was 3.14 times hi

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9

Niaz, N. A., A. Shakoor, F. Hussain, et al. "Structural and electronic properties of PANI-ZnO-TiO2 nanocomposite." Journal of Ovonic Research 18, no. 5 (2022): 713–22. http://dx.doi.org/10.15251/jor.2022.185.713.

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The nanocomposites of doped Polyaniline (PANI) with ZnO-TiO2 nanoparticles have been prepared by in-situ polymerization method. The structural properties of synthesized PANI and PANI/ZnO-TiO2 were studied by X-ray diffraction (XRD) analysis. XRD pattern show that PANI is intercalated into the layers of ZnO-TiO2 successfully and thus the degree of crystallinity increases due to crystalline nature of ZnO-TiO2. FTIR analysis indicated that there is a strong interaction between ZnO-TiO2 nanoparticles and PANI. Electronic properties (Dielectric and Conductivity) of PANI and PANI/ZnO-TiO2 nanocompos

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10

Novruzova, A. A. "STRUCTURE AND ELECTROPHYSICAL PROPERTIES OF PVDF+PbS/CdS NANOCOMPOSITES." NNC RK Bulletin, no. 2 (October 17, 2021): 53–56. http://dx.doi.org/10.52676/1729-7885-2021-2-53-56.

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In the given paper were investigated structure and electrophysical properties of PVDF+PbS/CdS nanocomposites. Distribution and the size of PbS and CdS nanoparticles in the polymer matrix has been studied by scanning electron microscopy (JEOL JSM-7600 F). The structure of the nanocomposite samples was investigated by the X-ray diffraction spectroscopy. The dependence of dielectric permittivity at frequency and temperature was investigated. It was shown that the dielectric permittivity of PVDF+PbS/CdS nanocomposite samples was increase in small nanoparticles content. Further increase in the conc

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11

Min, Daomin, Chenyu Yan, Rui Mi, et al. "Carrier Transport and Molecular Displacement Modulated dc Electrical Breakdown of Polypropylene Nanocomposites." Polymers 10, no. 11 (2018): 1207. http://dx.doi.org/10.3390/polym10111207.

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Dielectric energy storage capacitors have advantages such as ultra-high power density, extremely fast charge and discharge speed, long service lifespan and are significant for pulsed power system, smart power grid, and power electronics. Polypropylene (PP) is one of the most widely used dielectric materials for dielectric energy storage capacitors. It is of interest to investigate how to improve its electrical breakdown strength by nanodoping and the influencing mechanism of nanodoping on the electrical breakdown properties of polymer nanocomposites. PP/Al2O3 nanocomposite dielectric materials

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12

Liu, Tian, Weston Wood, Bin Li, Brooks Lively, and Wei-Hong Zhong. "Electrical and dielectric sensitivities to thermal processes in carbon nanofiber/high-density polyethylene composites." Science and Engineering of Composite Materials 18, no. 1-2 (2011): 51–60. http://dx.doi.org/10.1515/secm.2011.007.

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AbstractOwing to the huge interface region existing in a polymer nanocomposite, the effects of thermal processes on properties of nanocomposites are much more complicated than in a pure polymer. It is therefore important to determine the effects of thermal processes on nanocomposites with different interfacial interactions between the nanofillers and the polymer matrix. It is also important to explore the performance changes for nanocomposites under elevated temperatures over pure polymers. In this investigation, we examined the correlation of thermal treatment with dielectric properties of ca

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13

Kaur, Daljeet, Amardeep Bharti, Tripti Sharma, and Charu Madhu. "Dielectric Properties of ZnO-Based Nanocomposites and Their Potential Applications." International Journal of Optics 2021 (July 22, 2021): 1–20. http://dx.doi.org/10.1155/2021/9950202.

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Energy storage devices constitute one of the research areas in recent years. Capacitors are commonly used for the storage of electrical energy. The current research is focusing on not only the improvement in energy density but also the materials which are environment friendly. Polymer composites are known to be technically essential materials owing to their wide range of applications. Enormous research has been devoted to zinc oxide- (ZnO-) based polymer nanocomposites, due to their extraordinary dielectric properties. This review article presents a detailed study of the dielectric properties

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14

Hao, Y. N., K. Bi, S. O'Brien, et al. "Interface structure, precursor rheology and dielectric properties of BaTiO3/PVDF–hfp nanocomposite films prepared from colloidal perovskite nanoparticles." RSC Advances 7, no. 52 (2017): 32886–92. http://dx.doi.org/10.1039/c7ra03250a.

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A novel and greatly simplified strategy was developed to fabricate high-permittivity dielectric nanocomposites. Interface structure, precursor rheology and dielectric properties of the 0–3 BaTiO<sub>3</sub>/PVDF–hfp nanocomposite film were investigated.

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15

Yatsyshen, Valeriy, Irina Potapova, and Vyacheslav Shipaev. "Polaritons in Nanocomposites of Metal Nanoparticles – Dielectric." NBI Technologies, no. 2 (October 2019): 39–53. http://dx.doi.org/10.15688/nbit.jvolsu.2019.2.7.

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The article studies the main characteristics of surface polaritons in composite nanomaterials. The authors consider composite media such as noble metal nanoparticles randomly distributed in a transparent dielectric matrix and build dispersion curves of polaritons in such nanocomposites. The paper shows calculating optical parameters of the surface polariton for several values of the radius of metal nanoparticles and the nanocomposite filling parameter. The authors also present the calculations of the complex refractive index for polaritons in composites with nanoparticles of different metals.

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16

NOH, HYUN-JI, SUNG-PILL NAM, SUNG-GAP LEE, et al. "ELECTRICAL AND MECHANICAL CHARACTERISTICS OF EPOXY-NANOCLAY COMPOSITE." Modern Physics Letters B 23, no. 31n32 (2009): 3925–30. http://dx.doi.org/10.1142/s0217984909022010.

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In this study, we investigated the effects of nanoclay additives on the electrical and mechanical properties of diglycidyl ether of bisphenol A (DGEBA) epoxy resin. Epoxy-clay nanocomposites were synthesized using organically modified two montmorillonite clays (MMT) with different interlamellar spacing (31.5 Å and 18.5 Å). The electrical and mechanical properties of epoxy-clay nanocopomosites were measured with variation of the amount and type of clay. The nanocomposites were found to be homogenous materials although the nanocomposites still have clay aggregates with increasing nanoclay conten

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17

Ahangaran, Fatemeh, Ali Hassanzadeh, Sirous Nouri, and Rasoul Esmaeely Neisiany. "Investigation of thermal and dielectric properties of Fe3O4/high-density polyethylene nanocomposites." Journal of Composite Materials 51, no. 28 (2017): 3923–29. http://dx.doi.org/10.1177/0021998317695419.

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High-density polyethylene nanocomposites containing Fe3O4 nanoparticles were prepared by employing melt mixing process. The amorphous Fe3O4 nanoparticles with average size about 50 nm were prepared by the conventional coprecipitation method from iron (ΙΙ and ΙΙΙ). Thermal and dielectric properties of high-density polyethylene and its nanocomposites were investigated via differential scanning calorimetry and electrochemical impedance spectroscopy. The crystalline structure of high-density polyethylene and Fe3O4/high-density polyethylene nanocomposite were studied by wide-angle X-ray diffraction

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18

Cheng, Yujia, Guang Yu, Boyang Yu, and Xiaohong Zhang. "The Research of Conductivity and Dielectric Properties of ZnO/LDPE Composites with Different Particles Size." Materials 13, no. 18 (2020): 4136. http://dx.doi.org/10.3390/ma13184136.

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Nanocomposites exhibit a high dielectric strength, whereas microcomposites exhibit a high thermal conductivity. In this study, good insulating materials were developed on the basis of the synergetic effect of micro- and nanoparticles, which were used as inorganic fillers. With a double-melting blend, nano-ZnO/low density polyethylene (LDPE), micro-ZnO/LDPE, and micro-nano-ZnO/LDPE composites were prepared, according to the scanning electron microscope test, polarization microscope test, conductivity test, breakdown test, and dielectric spectrum test, the dielectric property of micro-nano-ZnO/L

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19

Wang, Shaojing, Peng Xu, Xiangyi Xu, et al. "Tailoring the Electrical Energy Storage Capability of Dielectric Polymer Nanocomposites via Engineering of the Host–Guest Interface by Phosphonic Acids." Molecules 27, no. 21 (2022): 7225. http://dx.doi.org/10.3390/molecules27217225.

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Polymer nanocomposites have attracted broad attention in the area of dielectric and energy storage. However, the electrical and chemical performance mismatch between inorganic nanoparticles and polymer leads to interfacial incompatibility. In this study, phosphonic acid molecules with different functional ligands were introduced to the surface of BaTiO3 (BT) nanoparticles to tune their surface properties and tailor the host–guest interaction between BT and poly(vinylideneflyoride-co-hexafluroro propylene) (P(VDF-HFP)). The dielectric properties and electrical energy storage capability of the n

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20

Jeong, Jae, Hye Hwang, Dalsu Choi, Byung Ma, Jaehan Jung, and Mincheol Chang. "Hybrid Polymer/Metal Oxide Thin Films for High Performance, Flexible Transistors." Micromachines 11, no. 3 (2020): 264. http://dx.doi.org/10.3390/mi11030264.

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Metal oxides (MOs) have garnered significant attention in a variety of research fields, particularly in flexible electronics such as wearable devices, due to their superior electronic properties. Meanwhile, polymers exhibit excellent mechanical properties such as flexibility and durability, besides enabling economic solution-based fabrication. Therefore, MO/polymer nanocomposites are excellent electronic materials for use in flexible electronics owing to the confluence of the merits of their components. In this article, we review recent developments in the synthesis and fabrication techniques

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21

Sagar, Rohan, Akash Kumar, Rajesh Kumar Raghav, and M. S. Gaur. "Investigations on Piezoelectric, Dielectric and Mechanical Properties of PVDF/PVC/GO Nanocomposites." ECS Journal of Solid State Science and Technology 12, no. 8 (2023): 083011. http://dx.doi.org/10.1149/2162-8777/aceeb4.

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In this study, the hardness of polyvinylidene fluoride (PVDF), PVC and PVDF/PVC/GO (2.0 wt%) was estimated using piezoelectric and dielectric properties. The structure morphology was analyzed by Fourier transform infrared spectroscopy (FTIR). With the help of the solution casting technique, GO nanofiller were incorporated into PVDF/PVC matrix to prepare nanocomposites. In the case of PVDF/PVC/GO nanocomposites (2.0 wt%), the d33 coefficient is comparatively higher. PVDF have lower dielectric constant, however, may be due to interfacial polarization occurring at the spherulites and at the polym

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22

Shao, Jiang, Le Zhou, Yuqi Chen, Xue Liu, and Mingbo Ji. "Model-Based Dielectric Constant Estimation of Polymeric Nanocomposite." Polymers 14, no. 6 (2022): 1121. http://dx.doi.org/10.3390/polym14061121.

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The interphase region widely exists in polymer-based nanocomposites, which affects the dielectric properties of the nanocomposites. General models, such as the Knott model, are often used to predict the dielectric constant of nanocomposites, while the model does not take the existence of interphase into account, which leads to a large deviation between the predicted results and the experimental values. In this study, a developed Knott model is proposed by introducing the interphase region and appropriately assuming the properties of the interphase. The modeling results based on the developed m

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23

Mohaimeed, Ameen alwan. "The Study the Influence of TiO2-Nanoparticles Doped in Polyvinyl Alcohol by Measuring Optical Properties of PVA Films." Iraqi Journal of Nanotechnology, no. 3 (October 14, 2022): 59–70. http://dx.doi.org/10.47758/ijn.vi3.62.

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It was investigated how titanium dioxide nanoparticles affected the optical properties of polyvinyl alcohol. Polymer nanocomposites (PVA-TiO2) are created via stirring and casting. The results demonstrate that transmittance improves from 75% to 95% while titanium dioxide concentration enhances the absorbance of nanocomposites. Nanocomposite films made of PVA and TiO2 had reflectance values of 12 and 16 percent (weight percent=0.15 and 0.85%).The refractive index and coefficient of extinction rise with increasing density, and optical absorption and photon dispersion in the nanocomposite (PVA-Ti

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24

Kamarudin, Siti Noorhazirah, Kwan Yiew Lau, Chee Wei Tan, and Kuan Yong Ching. "The Role of Silicon-Based Nanofillers and Polymer Crystallization on the Breakdown Behaviors of Polyethylene Blend Nanocomposites." Nano 15, no. 08 (2020): 2050097. http://dx.doi.org/10.1142/s1793292020500976.

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Good breakdown strength is an important feature for the selection of dielectric materials, especially in high-voltage engineering. Although nanocomposites have been shown to possess many promising dielectric properties, the breakdown strength of nanocomposites is often found to be negatively affected. Recently, imposing nonisothermal crystallization processes on polyethylene blends has been demonstrated to be favorable for breakdown strength improvements of dielectric materials. In an attempt to increase nanocomposites’ voltage rating, this work reports on the effects of nonisothermal crystall

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25

Yang, Dandan, Haiping Xu, and Wei Yu. "Comparative study on the dielectric properties of three polyvinylidene fluoride nanocomposites incorporated with carbon filler." Journal of Thermoplastic Composite Materials 31, no. 8 (2017): 1102–11. http://dx.doi.org/10.1177/0892705717734601.

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Poly(vinylidene fluoride) (PVDF)-carbon nanotube (CNT) composites with three different CNTs were prepared by a solution blending and hot-press method. The morphologies of nanocomposites were studied by scanning electron microscopy. The X-ray diffraction and differential scanning calorimeter data indicated that the addition of CNTs can promote the formation of β-phase of PVDF. The dielectric constant values of three PVDF/CNTs are much greater than that of neat PVDF. It has been found that the dielectric loss of the short hydroxylated CNTs filled PVDF nanocomposite is lower than those of other t

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Stephen, Ranimol, Sabu Thomas, K. V. S. N. Raju, Siby Varghese, Kuruvilla Joseph, and Zachariah Oommen. "Dynamic Mechanical and Dielectric Properties of Nanocomposites of Natural Rubber (NR), Carboxylated Styrene Butadiene Rubber (XSBR) Latices and their Blends." Rubber Chemistry and Technology 80, no. 4 (2007): 672–89. http://dx.doi.org/10.5254/1.3548187.

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Abstract The viscoelastic and dielectric properties of nano structured layered silicates reinforced natural rubber (NR), carboxylated styrene butadiene rubber (XSBR) and their blends have been analyzed. The viscoelastic properties such as storage modulus, loss modulus, damping behavior and glass transition temperature of nano filled latices have been investigated. Upon the addition of filler, the storage modulus of nanocomposites was found to increase due to the enhancement in stiffness of the material. Due to the restricted mobility of polymer chain segments, the damping values decreased as a

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27

Prokhorov, Evgen, Gabriel Luna-Bárcenas, José Martín Yáñez Limón, Alejandro Gómez Sánchez, and Yuriy Kovalenko. "Chitosan-ZnO Nanocomposites Assessed by Dielectric, Mechanical, and Piezoelectric Properties." Polymers 12, no. 9 (2020): 1991. http://dx.doi.org/10.3390/polym12091991.

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The aim of this work is to structurally characterize chitosan-zinc oxide nanoparticles (CS-ZnO NPs) films in a wide range of NPs concentration (0–20 wt.%). Dielectric, conductivity, mechanical, and piezoelectric properties are assessed by using thermogravimetry, FTIR, XRD, mechanical, and dielectric spectroscopy measurements. These analyses reveal that the dielectric constant, Young’s modulus, and piezoelectric constant (d33) exhibit a strong dependence on nanoparticle concentration such that maximum values of referred properties are obtained at 15 wt.% of ZnO NPs. The piezoelectric coefficien

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28

Tawade, Bhausaheb V., Ikeoluwa E. Apata, Nihar Pradhan, Alamgir Karim, and Dharmaraj Raghavan. "Recent Advances in the Synthesis of Polymer-Grafted Low-K and High-K Nanoparticles for Dielectric and Electronic Applications." Molecules 26, no. 10 (2021): 2942. http://dx.doi.org/10.3390/molecules26102942.

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The synthesis of polymer-grafted nanoparticles (PGNPs) or hairy nanoparticles (HNPs) by tethering of polymer chains to the surface of nanoparticles is an important technique to obtain nanostructured hybrid materials that have been widely used in the formulation of advanced polymer nanocomposites. Ceramic-based polymer nanocomposites integrate key attributes of polymer and ceramic nanomaterial to improve the dielectric properties such as breakdown strength, energy density and dielectric loss. This review describes the “grafting from” and “grafting to” approaches commonly adopted to graft polyme

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Singha, Santanu, and M. Thomas. "Dielectric properties of epoxy nanocomposites." IEEE Transactions on Dielectrics and Electrical Insulation 15, no. 1 (2008): 12–23. http://dx.doi.org/10.1109/t-dei.2008.4446732.

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Tanaka, T. "Dielectric nanocomposites with insulating properties." IEEE Transactions on Dielectrics and Electrical Insulation 12, no. 5 (2005): 914–28. http://dx.doi.org/10.1109/tdei.2005.1522186.

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Wong, Shing-Chung, Erwin M. Wouterson, and Eric M. Sutherland. "Dielectric properties of graphite nanocomposites." Journal of Vinyl and Additive Technology 12, no. 3 (2006): 127–30. http://dx.doi.org/10.1002/vnl.20081.

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Shimoga, Ganesh, and Sang-Youn Kim. "High-k Polymer Nanocomposite Materials for Technological Applications." Applied Sciences 10, no. 12 (2020): 4249. http://dx.doi.org/10.3390/app10124249.

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Understanding the properties of small molecules or monomers is decidedly important. The efforts of synthetic chemists and material engineers must be appreciated because of their knowledge of how utilize the properties of synthetic fragments in constructing long-chain macromolecules. Scientists active in this area of macromolecular science have shared their knowledge of catalysts, monomers and a variety of designed nanoparticles in synthetic techniques that create all sorts of nanocomposite polymer stuffs. Such materials are now an integral part of the contemporary world. Polymer nanocomposites

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Zazoum, Bouchaib. "Machine Learning Approach to Predict Dielectric Permittivity of PE/TiO₂ Nanocomposites." Materials Science Forum 998 (June 2020): 239–45. http://dx.doi.org/10.4028/www.scientific.net/msf.998.239.

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Controlling process parameters has significant influence in designing and developing nanocomposites materials with tailored dielectric properties. In the present study, polyethylene/TiO2 nanocomposites were fabricated using ball milling technique. The effects of TiO2 nanoparticles on the final dielectric properties of the nanocomposites in frequency domain were investigated. The dielectric spectroscopy measurements revealed that relative dielectric permittivity of the nanocompsoites was increased with TiO2 content. Besides, machine learning approach based on artificial neural networks (ANNs) a

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Zazoum, B., E. David, and A. D. Ngô. "LDPE/HDPE/Clay Nanocomposites: Effects of Compatibilizer on the Structure and Dielectric Response." Journal of Nanotechnology 2013 (2013): 1–10. http://dx.doi.org/10.1155/2013/138457.

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PE/clay nanocomposites were prepared by mixing a commercially available premixed polyethylene/O-MMT masterbatch into a polyethylene blend matrix containing 80 wt% low-density polyethylene and 20 wt% high-density polyethylene with and without anhydride modified polyethylene (PE-MA) as the compatibilizer using a corotating twin-screw extruder. In this study, the effect of nanoclay and compatibilizer on the structure and dielectric response of PE/clay nanocomposites has been investigated. The microstructure of PE/clay nanocomposites was characterized using wide-angle X-ray diffraction (WAXD) and

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Balachandar, V., J. Brijitta, K. Viswanathan, and R. Sampathkumar. "Investigations on the Structural, Optical and Dielectric Properties of Ball-Milled ZnO–Fe2O3 Nanocomposites." International Journal of Nanoscience 19, no. 04 (2020): 1950034. http://dx.doi.org/10.1142/s0219581x19500340.

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In this study, ZnO–Fe2O3 nanocomposites were prepared by high-energy ball milling technique and characterized through X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), UV–visible spectroscopy and dielectric spectroscopy. The amount of Fe2O3 in the ZnO–Fe2O3 nanocomposites was varied at the rates of 1[Formula: see text]wt.%, 3[Formula: see text]wt.% and 5[Formula: see text]wt.% in order to investigate its influence on the structural, optical and dielectric properties of the nanocomposites. XRD patterns of nanocomposites revealed no shift in peak positions and hence c

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Ramazanov, M. A., A. M. Rahimli, and F. V. Hajiyeva. "The influence of titanium dioxide (TiO2) nanoparticles on the structure, optical and dielectric properties of polyvinyl chloride (PVC)." Modern Physics Letters B 34, no. 28 (2020): 2050310. http://dx.doi.org/10.1142/s0217984920503108.

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The tendency to improve the properties of insulating materials by incorporating inorganic nanoparticles has become necessary in order to design new insulation systems. In this study, PVC/TiO2-based nanocomposites with different loadings (3, 5 and 10 wt.%) of TiO2 nanoparticles were prepared by the solution mixing method. The morphology of the prepared nanocomposites was studied by Atomic Force Microscope (AFM). Experimentally, it was found that as the concentration increases, the size of the surface structural elements and particle size increases. Photoluminescence (PL) analysis of samples sho

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Osipov, Mikhail A., Alexey S. Merekalov, and Alexander A. Ezhov. "Molecular-Theory of High Frequency Dielectric Susceptibility of Nematic Nanocomposites." Crystals 10, no. 11 (2020): 970. http://dx.doi.org/10.3390/cryst10110970.

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A molecular-statistical theory of the high frequency dielectric susceptibility of the nematic nanocomposites has been developed and approximate analytical expressions for the susceptibility have been obtained in terms of the effective polarizability of a nanoparticle in the nematic host, volume fraction of the nanoparticles and the susceptibility of the pure nematic phase. A simple expression for the split of the plasmon resonance of the nanoparticles in the nematic host has been obtained and it has been shown that in the resonance frequency range the high frequency dielectric anisotropy of th

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Thabet, Ahmed, and Youssef Mobarak. "Experimental Dielectric Measurements for Cost-fewer Polyvinyl Chloride Nanocomposites." International Journal of Electrical and Computer Engineering (IJECE) 5, no. 1 (2015): 13. http://dx.doi.org/10.11591/ijece.v5i1.pp13-22.

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<span>Polymer nanocomposites possess promising high performances as engineering materials, if they are prepared and fabricated properly. In this research, it has been processed samples of nanocomposite polymers as electrical insulating materials for application on the electric power cables by using the latest techniques of nanotechnology. This paper has been investigated enhanced dielectric and electrical properties of Polyvinyl chloride PVC as matrix have shown that trapping properties are highly modified by the presence of costless nanofillers clay and fumed silica. An experimental wor

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Arief, Yanuar Z., Mohd Izairi Ismail, Mohamad Zul Hilmey Makmud, Aulia, Zuraimy Adzis, and Nor Asiah Muhamad. "Partial Discharge Characteristics of Natural Rubber Blends with Inorganic Nanofiller as Electrical Insulating Material." Applied Mechanics and Materials 284-287 (January 2013): 188–92. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.188.

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In electrical engineering, electrical discharge can occur in gaseous, liquid or solid insulating medium. Localized dielectric breakdown that occur at a small portion of a solid or fluid electrical insulation under high voltage stress is called partial discharge (PD). This phenomenon can cause the material to breakdown if there is no proper action taken. Usually it begins within voids, cracks, or inclusions within a solid dielectric, at conductor-dielectric interfaces within solid and in bubbles within liquid dielectrics. In order to modify electrical properties of the original structure then n

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Sharma, Anshu, S. P. Nehra, Y. K. Vijay, and I. P. Jain. "Impact of Magnetically Aligned CNT/PC Nanocomposites for Hydrogen Gas Separation Applications." MRS Advances 1, no. 42 (2016): 2873–80. http://dx.doi.org/10.1557/adv.2016.376.

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ABSTRACTThe goal of this work is to study the properties of magnetically aligned CNT/PC nanocomposites towards the development of hydrogen gas separation membranes. A fraction (0.1 weight %) of synthesized carbon nanotubes (CNTs) have been dispersed homogeneously throughout polycarbonate (PC) matrix by ultrasonication. The alignment of CNT in PC matrix has been accomplished by applying an external magnetic field of 1200 Gauss. These nanocomposites have been studied by gas permeation using H2, N2and Co2electrical and dielectric constant measurements. Experimental results of gas permeability mea

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Hassan, Dalal, and Ahmed Hashim Ah-yasari. "Fabrication and studying the dielectric properties of (polystyrene-copper oxide) nanocomposites for piezoelectric application." Bulletin of Electrical Engineering and Informatics 8, no. 1 (2019): 52–57. http://dx.doi.org/10.11591/eei.v8i1.1019.

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The preparation of (polystyrene-copper oxide) nanocomposites have been investigated for piezoelectric application. The copper oxide nanoparticles were added to polystyrene by different concentrations are (0, 4, 8 and 12) wt.%. The structural and A.C electrical properties of (PS-CuO) nanocomposites were studied. The results showed that the dielectric constant and dielectric loss of (PS-CuO) nanocomposites decrease with increase in frequency. The A.C electrical conductivity increases with increase in frequency. The dielectric constant, dielectric loss and A.C electrical conductivity of polystyre

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Ni, Xia, Ji Ma, Jiangong Li, Juanjuan Huang, Dongmao Jiao, and Zhibin Lu. "Structure and Microwave Characteristics of Co/TiO2 Nanocomposites Prepared by Ball Milling." Journal of Nanoscience and Nanotechnology 8, no. 9 (2008): 4470–76. http://dx.doi.org/10.1166/jnn.2008.293.

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Co/TiO2 nanocomposites were fabricated via direct ball milling. The structure and microwave characteristics of the Co/TiO2 nanocomposites were investigated. The results show that the hcp and fcc Co phases coexist in the nanocomposites for a long milling duration. The accumulation of the stacking faults in Co and the increase of the Co/TiO2 interfaces were detected by nuclear magnetic resonance. The measured relative complex permittivity of the Co/TiO2 nanocomposite-paraffin wax mixture indicates that a high electrical resistivity and a dielectric loss exist in the Co/TiO2 nanocomposites. The d

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Vanin, A. I., Yu A. Kumzerov, V. G. Solov’ev, et al. "Electrical and Optical Properties of Nanocomposites Fabricated by the Introduction of Iodine in Porous Dielectric Matrices." Glass Physics and Chemistry 47, no. 3 (2021): 229–34. http://dx.doi.org/10.1134/s1087659621030123.

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Abstract The electrical and optical properties of nanocomposite materials fabricated by the dispersion of iodine in porous dielectric matrices of zeolites, zeolite-like aluminum phosphates, opals, asbestos, and porous aluminum oxide are studied. It is demonstrated that the physical properties of the produced nanocomposites depend significantly on the structure of a matrix.

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Lin, Jia Qi, Ying Liu, Wen Long Yang, and Hui Lin. "Investigation on the Morphology and Dielectric Properties of PI/SiO₂ Nanocomposite Films." Advanced Materials Research 1015 (August 2014): 250–54. http://dx.doi.org/10.4028/www.scientific.net/amr.1015.250.

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Polyimide nanocomposite insulating materials are widely used in electrical and electron engineering owing to their outstanding electrical, mechanical, thermal, and wear-resistance properties. Polyimide/silica (PI/SiO2) nanocomposites have been prepared by the polymerization process of adding tetraethoxysilane (TEOS) and the coupling agent isocyanatopropyltriethoxysilane (ICTOS) in polyimide. The effects of SiO2addition on the microstructure and the dielectric property of nanocomposite films were investigated. It was found that the silica particles were well dispersed in PI matrix and the sizes

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Shivashankar, H., Kevin Amith Mathias, Pavankumar R. Sondar, M. H. Shrishail, and S. M. Kulkarni. "Study on low-frequency dielectric behavior of the carbon black/polymer nanocomposite." Journal of Materials Science: Materials in Electronics 32, no. 24 (2021): 28674–86. http://dx.doi.org/10.1007/s10854-021-07242-1.

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AbstractRecently, polymer-based dielectric materials have become one of the key materials to play an essential role in clean energy production, energy transformation, and energy storage applications. The end usage is the energy storage capability because it is a trade-off between dielectric permittivity, dielectric loss, and dissipation factor. Hence, it is of prime importance to study the dielectric properties of polymer materials by adding filler material at a low-frequency range. In the present study, polydimethylsiloxane/carbon black nanocomposites are prepared using the solution cast meth

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Hassan, Dalal, and Ahmed Hashim. "Synthesis of (Poly-methyl Methacrylate-lead Oxide) Nanocomposites and Studying their A.C Electrical Properties for Piezoelectric Applications." Bulletin of Electrical Engineering and Informatics 7, no. 4 (2018): 547–51. http://dx.doi.org/10.11591/eei.v7i4.969.

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Piezoelectric materials have been prepared from (poly-methyl methacrylate-lead oxide) nanocomposites for electronic applications. The lead oxide nanoparticles were added to poly-methyl methacrylate by different concentrations are (4, 8, and 12) wt%. The structural and dielectric properties of nanocomposites were studied. The results showed that the dielectric constant and dielectric loss of nanocomposites decrease with increase in frequency of applied electric field. The A.C electrical conductivity increases with increase in frequency. The dielectric constant, dielectric loss and A.C electrica

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Peng, Cheng, Yefeng Feng, and Jianbing Hu. "Enhancing High-Frequency Dielectric Properties of Beta-SiC Filled Nanocomposites from Synergy between Percolation and Polarization." Materials 11, no. 9 (2018): 1699. http://dx.doi.org/10.3390/ma11091699.

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Promising comprehensive properties, including high permittivity, low dielectric loss, high breakdown strength, low electrical conductivity, and high thermal conductivity, are very hard to simultaneously obtain in high-frequency applicable polymer nanocomposite dielectrics. Instead of traditional electric percolation, in this work, a novel route based on a synergy between electric percolation and induced polarization has been raised to prepare 0–3 type nanocomposites with an enhanced high permittivity (high-k) property and low loss at high frequency. This work aimed at optimizing that synergy t

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You, Yong, Ling Tu, Yajie Wang, Lifen Tong, Renbo Wei, and Xiaobo Liu. "Achieving Secondary Dispersion of Modified Nanoparticles by Hot-Stretching to Enhance Dielectric and Mechanical Properties of Polyarylene Ether Nitrile Composites." Nanomaterials 9, no. 7 (2019): 1006. http://dx.doi.org/10.3390/nano9071006.

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Enhanced dielectric and mechanical properties of polyarylene ether nitrile (PEN) are obtained through secondary dispersion of polyaniline functionalized barium titanate (PANI-f-BT) by hot-stretching. PANI-f-BT nanoparticles with different PANI content are successfully prepared via in-situ aniline polymerization technology. The transmission electron microscopy (TEM), fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopic instrument (XPS) and Thermogravimetric analysis (TGA) results confirm that the PANI layers uniformly enclose on the surface of BaTiO3 nanoparticles.

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Wu, Minjie, Linfeng Lu, Linhai Yu, et al. "Preparation and Characterization of Epoxy/Alumina Nanocomposites." Journal of Nanoscience and Nanotechnology 20, no. 5 (2020): 2964–70. http://dx.doi.org/10.1166/jnn.2020.17460.

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Nano-alumina (Al2O3, 30 nm) particles were employed to reinforce and toughen epoxy resin. The effects of Al2O3 nanoparticles on the mechanical properties of the composites were investigated by tensile and impact tests. It shows that the mechanical properties of epoxy nanocomposites have been improved significantly. For the prepared nanocomposite with 3.0 wt.% of Al2O3 addition, the tensile strength, elongation at break and impact strength reached 74.83 MPa, 10.63% and 13.79 kJ/m2, and were improved by 82.60%, 33.38% and 63.58%, respectively, compared with those of pure epoxy resin. The epoxy/A

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Hashim, A., and A. Hadi. "Novel Pressure Sensors Made from Nanocomposites (Biodegradable Polymers–Metal Oxide Nanoparticles): Fabrication and Characterization." Ukrainian Journal of Physics 63, no. 8 (2018): 754. http://dx.doi.org/10.15407/ujpe63.8.754.

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This paper aims to the preparation of novel pressure-sensitive nanocomposites with low cost, light weight, and good sensitivity. The nanocomposites of polyvinyl alcohol, polyacrylic acid, and lead oxide nanoparticles have been investigated. The dielectric properties and dc electrical conductivity of (PVA–PAA–PbO2) nanocomposites have been studied. The dielectric properties of nanocomposites were measured in the frequency range (100 Hz–5 MHz). The experimental results showed that the dielectric constant and dielectric loss of (PVA–PAA–PbO2) nanocomposites decrease, as the frequency increases, a

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