Conductive switching behavior of epoxy resin/micron-aluminum particles composites

Lü, Peng; Qu, Zhaoming; Wang, Qingguo; Wang, Yan; Cheng, Wei

doi:10.1515/epoly-2017-0164

Cited by 10 publications

(4 citation statements)

References 24 publications

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“…Aluminum is characterized by its low density and thus low weight, high strength, easy in machining, good thermal and electrical conductivities and excellent corrosion resistance [3,22,23]. Incorporation of aluminum powder with epoxy resin improves the mechanical properties including hardness, dimension accuracy, and thermal conductivity [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Megahed

Fathy

Morsy

et al. 2019

Journal of Industrial Textiles

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In this article, the effects of using nanometer and micrometer-sized aluminum particles in glass fiber reinforcement epoxy composites have been studied. The study evaluates the mechanical properties improvement with the addition of nanometer and micrometer-sized aluminum particles to glass fiber reinforcement epoxy composites. The combination of aluminum and woven glass fibers provide high potential for the modification of the epoxy matrix. The composites were produced by hand lay-up technique. The glass fiber volume fraction was kept constant at 35%, while the contents of aluminum particles were increased from 0.2 to 4 wt%. The developed composites showed enhanced tensile, flexural, hardness, wear, and impact behavior as compared to glass fiber reinforcement epoxy. An enhancement of 27% was attained in tensile strength with glass fiber reinforcement epoxy filled with 2 wt% aluminum nanoparticles; however, adding 4 wt% nanometer-sized aluminum particles showed an improvement of 114%, 116%, 21%, 52.2%, 21.4%, 76.6% in tensile elongation, toughness, tensile modulus, flexural strength, flexural strain, flexural modulus, respectively as compared to neat glass fiber reinforcement epoxy. Increasing the nanometer-sized aluminum particles in glass fiber reinforcement epoxy composites to 4 wt% reversed the improvement trend in tensile strengths, wear, and hardness. However, increasing the micrometer-sized aluminum particles to 4 wt% has shown fair improvement in all used aluminum loadings. Microscopy results showed that the aluminum particles were well dispersed in the epoxy matrix. However, a higher weight fraction of nano-aluminum in the epoxy had promoted little agglomerations.

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Section: Introductionmentioning

confidence: 99%

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Megahed

Fathy

Morsy

et al. 2019

Journal of Industrial Textiles

View full text Add to dashboard Cite

show abstract

“…As shown in previous reports, polymeric composites, comprising of highly stable polymer matrix and fillers with good electrical conductivity via a series of proper reaction methods, are successful to demonstrate obvious nonlinear conductive behaviors [ 5 , 6 , 7 , 8 , 9 , 10 ], which indicates the potential applying of polymeric composites for preventing the overvoltage of electronic devices [ 11 , 12 , 13 ]. For instance, White et al [ 14 , 15 ] demonstrated the preparation and characterization analysis of silver nanowire-polystyrene filler nanocomposites.…”

Section: Introductionmentioning

confidence: 90%

Nonlinear Conductive Characteristics of ZnO-Coated Graphene Nanoplatelets-Carbon Nanotubes/Epoxy Resin Composites

Yang

Wang

et al. 2020

Polymers

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With the increasing threats arising from the electromagnetic environment, polymeric composites which could exhibit nonlinear conductive characteristics are highly required in the protection of electronic devices against overvoltage. In this research, ZnO nanoparticles are coated onto graphene nanoplatelets (GNPs)-carbon nanotubes (CNTs) hybrid, and then it is embedded in epoxy resin (ER) matrix via solution blending. Based on the characterization results, CNTs are well dispersed across the GNPs which prevent the restacking of GNPs and CNTs. At the same time, ZnO nanoparticles are well-bonded to the surfaces of GNPs-CNTs hybrid. During repeated conductive characteristic measurements, GNPs-CNTs-ZnO/ER composite is able to demonstrate distinctly reversible nonlinear conductive behavior, with high nonlinear coefficients. Especially, the filler content in GNPs-CNTs-ZnO/ER composite is only 12.5% of that in GNPs-ZnO/ER composite reported in our previous work. Moreover, it is shown that the nonlinear coefficients and switching threshold voltage can be modified by controlling the weight ratios of GNPs, CNTs, and ZnO. Finally, the samples with 1:1 weight ratio of GO to MWCNTs (A-6.67 and A-10) exhibit the best reversible nonlinear conductive behavior.

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“…In recent years, polymeric composites, which consist of a polymer matrix and conductive or semiconductive fillers, have exhibited nonlinear I-V characteristics and great utilization potential in the field of overvoltage protection because of their excellent properties [5][6][7][8][9][10][11]. In the report of S.I.…”

Section: Introductionmentioning

confidence: 99%

Reversible Nonlinear I-V Behavior of ZnO-Decorated Graphene Nanoplatelets/Epoxy Resin Composites

Yang

Wang

et al. 2020

Polymers

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With the more serious threats from complex electromagnetic environments, composites composed of conductive or semiconductive fillers and polymeric matrices could exhibit excellent nonlinear I-V characteristics, and have drawn significant attention in the field of overvoltage protection. In this research, graphene nanoplatelets (GNPs) are decorated by ZnO and mixed into an epoxy resin (ER) matrix via solution blending to prepare composites. A characterization analysis and the I-V measurement results of the GNPs/ER composites indicate that ZnO nanoparticles are well bonded with GNPs and exhibit obvious nonlinear I-V behavior under proper applied voltage with high nonlinear coefficients. The switching threshold voltage and nonlinear coefficients could be controlled by adjusting the weight ratio of GNPs and ZnO of the filler. Moreover, compared with the poor recoverability of pure GNP-filled ER in previous research, the GNP-ZnO/ER composites exhibited excellent reversibility of nonlinear I-V behavior under multiple repetitive I-V measurements. And compared with different composites, the sample with a 1:8 weight ratio of GO to Zn(Ac)2 presents the smallest variation of switching threshold voltage at 158 V, with a standard deviation of 1.27% from among 20 measurements, which indicates the best reversibility. Finally, the conducting mechanism of the reversible nonlinear I-V characteristic is investigated and analyzed.

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Conductive switching behavior of epoxy resin/micron-aluminum particles composites

Cited by 10 publications

References 24 publications

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Mechanical Performance of glass/epoxy composites enhanced by micro- and nanosized aluminum particles

Nonlinear Conductive Characteristics of ZnO-Coated Graphene Nanoplatelets-Carbon Nanotubes/Epoxy Resin Composites

Reversible Nonlinear I-V Behavior of ZnO-Decorated Graphene Nanoplatelets/Epoxy Resin Composites

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