Electrical and mechanical properties of a metal-filled polymer composite for interconnection and testing applications

Fulton, J.A.; Horton, David; Moore, R. C.; Lambert, W.C.; Jin, S.; Opila, R. L.; Sherwood, R. C.; Tiefel, T. H.; Mottine, J. J.

doi:10.1109/ecc.1989.77729

Cited by 12 publications

(2 citation statements)

References 2 publications

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“…6 All type of physical properties of these polymer composites are highly influenced by the volume fraction of filler, nature of the filler, its shape and size, and its compatibility with the polymeric materials. [7][8][9][10] Addition of metal particles of micron size in an insulating polymer matrix to prepare polymer composites have been studied in the last few decades [11][12][13][14][15][16] because composite materials are lighter in weight and cheaper in cost as compared to metals. 4 Development of nanomaterials has enhanced the new possibilities of the use of polymeric materials in different applications.…”

Section: Introductionmentioning

confidence: 99%

Composites of cis‐ and trans‐polyisoprene blend filled with silver nanoparticles: Dynamic mechanical, mechanical, and thermal analysis

Baboo,

Kumar,

Kumar

et al. 2023

Polymer Composites

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In this article, polymer nanocomposites of polyisoprene with specific blend ratio 25/75 wt% of cis‐polyisoprene (CPI) and trans‐polyisoprene (TPI) with varying concentration (0.1, 1, and 5 wt%) of so synthesized silver nanoparticles (AgNPs) have been prepared and characterized through x‐ray diffraction, transmission electron microscope and scanning electron microscope. Experimental results on dynamic mechanical analysis show that addition of AgNPs to CPI/TPI blend reduces storage modulus, activation energy and fragility while enhances damping, however, glass transition temperature remains unaffected. Other mechanical properties such as toughness and tensile strength first increases on addition of AgNPs in the CPI/TPI blend, but a decrease is noticed on further increase of AgNPs concentration. Young's modulus shows a drastic decrease on addition of AgNPs into CPI/TPI blend, however, an increase is observed at higher concentration of AgNPs. Thermal analysis results show that thermal conductivity enhances with the enhancement in concentration of AgNPs into CPI/TPI blend.Highlights Addition of AgNPs into CPI/TPI blend reduces storage modulus, activation energy and fragility Incorporation of AgNPs into CPI/TPI blend enhances damping but does not change glass transition temperature. Increase in concentration of AgNPs in CPI/TPI blend increases the thermal conductivity.

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Section: Introductionmentioning

confidence: 99%

Composites of cis‐ and trans‐polyisoprene blend filled with silver nanoparticles: Dynamic mechanical, mechanical, and thermal analysis

Baboo,

Kumar,

Kumar

et al. 2023

Polymer Composites

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“…The various conductive properties of CPC have allowed them to find a variety of industrial applications since the early 1960s. They are used, for example, as protection devices against electromagnetic radiation and for the dissipation of electrostatic discharge [1]; in microelectronics they are used as electrical conductive adhesive for electrical connections [2]. The control of the conductivity of CPC is also interesting for applications such as sensors: temperature sensors [3,4], vapour sensors (artificial nose) [5,6] and pressure sensors [7].…”

Section: Introductionmentioning

confidence: 99%

Electrical resistivity mechanism in magnetorheological elastomer

Kchit¹,

Bossis²

2009

J. Phys. D: Appl. Phys.

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Magnetorheological elastomers (MRE) are smart materials made by aligning magnetic microparticles inside a liquid polymer. Once the polymer is cured, this anisotropic structure is kept, giving to the composite new properties such as a large change of electrical resistivity with applied pressure. In order to understand the conduction mechanism in such composite, the influence of pressure on the electrical resistivity of metal powders without polymer was first investigated. It was found that the initial resistivity of metal powder at zero pressure is about 10 8 Ω.cm for pure nickel powder and 10 6 Ω.cm for silver coated nickel particle. The piezoresistivity of the powders follows a power law with a coefficient close to (-1) at high compression, which allows to determine the thickness of the oxide layer. The change of resistance with pressure was found to be an order of magnitude larger for a MRE composite than for the same volume fraction of fillers dispersed randomly in the polymer. The filler particles have a high surface roughness, and when particles are brought into contact under pressure, the electric current takes place via microcontacts between asperities. The model of tunnel resistance developed in this study includes the roughness parameters and the thickness of the oxide layer found with the powder and introduces the thickness of the polymer layer as a new parameter. This model well reproduces experimental curves for piezoresistivity of composites informing on the thickness of the insulating polymer layer strongly adsorbed on the surface of particles.

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Piezoresistivity of magnetorheological elastomers

Kchit

Bossis

2008

J. Phys.: Condens. Matter

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Magnetorheological elastomers are smart materials made by aligning magnetic microparticles inside a liquid polymer before the curing process has started. Once cured, the composite presents new properties such as a large change of elasticity when applying a magnetic field. We analyze here another specific property of these materials which is the piezoresistivity. Two cases are studied: one where the particles inside the matrix are not in contact and the other where they are in contact. We show that in the first case we observe an exponential dependence of the resistivity versus pressure and in the second case a power law dependence. These behaviors are explained with the help of a conductivity model based on the dependence of the tunnel effect on the area of contact.

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Electrical and mechanical properties of a metal-filled polymer composite for interconnection and testing applications

Cited by 12 publications

References 2 publications

Composites of cis‐ and trans‐polyisoprene blend filled with silver nanoparticles: Dynamic mechanical, mechanical, and thermal analysis

Composites of cis‐ and trans‐polyisoprene blend filled with silver nanoparticles: Dynamic mechanical, mechanical, and thermal analysis

Electrical resistivity mechanism in magnetorheological elastomer

Piezoresistivity of magnetorheological elastomers

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