Electrical Conductivity of Rubber-Carbon Black Vulcanizates

Boonstra, Beitske; Dánnenberg, E. M.

doi:10.1021/ie50529a064

Cited by 27 publications

(9 citation statements)

References 7 publications

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“…A similar effect was observed in Boomstra and Dannenberg 15 for elastomer-based rubber. Growth of at the beginning of contraction is explained by destruction of conducting chains as a result of disordering of macromolecules and their globule formations.…”

Section: Figuresupporting

confidence: 86%

Effects of mechanical deformations on the structurization and electric conductivity of electric conducting polymer composites

Aneli

Заиков

Khananashvili

1999

J. Appl. Polym. Sci.

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Structural changes proceeding in composites under the effect of various mechanical deformations (stretching, compression, shear, etc.) affect the structure of an electrical conducting system. Mechanical stresses, induced by deformation of composite materials during deformation, affect both the molecular and supermolecular structure of polymers. As a consequence, they also affect a substructure bound to it and composed of filler particles. It is evident that in the case of conducting polymer composites, mechanical deformations should reflect electric conductivity of materials. Key words: mechanical deformations; macromolecules; electric conductivity; polymers ELECTRIC CONDUCTIVITY OF CARBON BLACK-FILLED RUBBERS UNDER STRETCHING DEFORMATIONSMechanical deformations that initiate intertransformations of macromolecules can affect the topology of conducting particles interacting with macromolecules. Many works have studied connections between structural features of composites and their electric conductivity at deformation.

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Section: Figuresupporting

confidence: 86%

Effects of mechanical deformations on the structurization and electric conductivity of electric conducting polymer composites

Aneli

Заиков

Khananashvili

1999

J. Appl. Polym. Sci.

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“…Electrical conductivity of rubber compounds gained great interest since the fifties of the last century originating from practical applications for antistatic tires, belts, electric cables and from fundamental relationship between conductivity and filler dispersion and reinforcement [1]. Nowadays, conductive elastomers are intensively studied as promising materials for transducers, sensors and flexible electrodes [2][3][4][5] because of their ability to be elastically deformed while still providing some degree of electrical conductivity [6].…”

Section: Introductionmentioning

confidence: 99%

Electrical conductivity degradation of fatigued carbon black reinforced natural rubber composites: Effects of carbon nanotubes and strain amplitudes

Harea¹,

Datta²,

Stěnička³

et al. 2019

Express Polym. Lett.

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The fatigue of rubber products is usually accompanied by undesirable transformation in their properties. The present work was dedicated to the investigation of consequences of fatigue loading on volume electric conductivity of natural rubber (NR) reinforced with 30 phr of fillers composed from various weight combinations of carbon nanotubes (CNTs) and carbon black (CB). Special attention was paid to study the influence of CNTs content on residual electric conductivity and a possible mechanism of fatigue driven rearrangement of hybrid filler network inside of rubber matrix was propounded forward. An increase in the CNTs content over the complete range of concentrations, enhanced the conductivity of fabricated samples up to two orders of magnitude in comparison to rubber compounds without CNTs. All the samples were subjected to harmonic sinusoidal loading at a frequency of 5 Hz up to 10 5 loading cycles at three different strains of 0.1, 0.25 and 0.5. Despite very little transformation in the polymer matrix, fatigue caused a progressive degradation of conductivity with an increase in applied strain. It was also found that with the addition and a subsequent increase in the concentration of CNTs, the undesirable reduction of conductivity was significantly arrested. This novel finding added another number to the list of the outstanding properties of CNTs.

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“…19-22 Boonstra and Dannenberg 19 have investigated the variation of conductivity of rubbercarbon black (CB) vulcanizates with various parameters such as concentration of CB, processing parameters, deformation, temperature, grain size, and surface area of CB. They have given a qualitative explanation for these experimental results.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore studies on the dielectric properties of FRPCs are very important. Many researchers have studied the dielectric properties of conducting filler and fiber filled FRPCs 19–22. Boonstra and Dannenberg19 have investigated the variation of conductivity of rubber‐carbon black (CB) vulcanizates with various parameters such as concentration of CB, processing parameters, deformation, temperature, grain size, and surface area of CB.…”

Section: Introductionmentioning

confidence: 99%

Influence of silicon carbide filler on mechanical and dielectric properties of glass fabric reinforced epoxy composites

Chandramohan

Renukappa²,

Siddaramaiah³

2008

J of Applied Polymer Sci

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Fiber-reinforced polymeric composites (FRPCs) have emerged as an important material for automotive, aerospace, and other engineering applications because of their light weight, design flexibility, ease of manufacturing, and improved mechanical performance. In this study, glass-epoxy (G-E) and silicon carbide filled glass-epoxy (SiC-G-E) composite systems have been fabricated using hand lay-up technique. The mechanical properties such as tensile strength, tensile modulus, elongation at break, flexural strength, and hardness have been investigated in accordance with ASTM standards. From the experimental investigations, it has been found that the tensile strength, flexural strength, and hardness of the glass reinforced epoxy composite increased with the inclusion of SiC filler. The results of the SiC (5 wt %)-G-E composite showed higher mechanical properties compared to G-E system. The dielectric properties such as dielectric constant (permittivity), tan delta, dielectric loss, and AC conductivity of these composites have been evaluated. A drastic reduction in dielectric constant after incorporation of conducting SiC filler into epoxy composite has been observed. Scanning electron microscopy (SEM) photomicrographs of the fractured samples revealed various aspects of the fractured surfaces. The failure modes of the tensile fractured surfaces have also been reported.

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Electrical Conductivity of Rubber-Carbon Black Vulcanizates

Cited by 27 publications

References 7 publications

Effects of mechanical deformations on the structurization and electric conductivity of electric conducting polymer composites

Effects of mechanical deformations on the structurization and electric conductivity of electric conducting polymer composites

Electrical conductivity degradation of fatigued carbon black reinforced natural rubber composites: Effects of carbon nanotubes and strain amplitudes

Influence of silicon carbide filler on mechanical and dielectric properties of glass fabric reinforced epoxy composites

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