Conductive nitrile rubber composite containing carbon fillers: Studies on mechanical properties and electrical conductivity

Pramanik, P.; Khastgir, Dipak; Saha, Tushar Kanti

doi:10.1016/0010-4361(92)90439-2

Cited by 44 publications

(33 citation statements)

References 10 publications

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“…At very dilute reactant concentrations, there was no detectable electrical conductivity until a threshold concentration of about 0.2 mg/ml is reached, after which a sudden rise in conductivity is observed, similar to that observed for the conductive particle-filled thermoplastic composites [21][22][23][24]. The rate of increase in conductivity diminished with further increase in reactant concentration.…”

Section: Surface Resistancementioning

confidence: 74%

Polymerising pyrrole on polyester textiles and controlling the conductivity through coating thickness

Lin

Wang

et al. 2005

Thin Solid Films

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The surface resistance of polypyrrole (PPy)-coated polyester fabrics was investigated and related to coating thickness, which was controlled by adjusting the reactant concentrations. The thickness of the coating initially increased rapidly followed by a steady increase when the concentration of pyrrole (Py) was larger than a concentration of approximately 0.4 mg/ml. The surface resistance decreased from 10 6 to 10 3 V with increase in pyrrole concentration within 0.2 mg/ml until the concentration reached a value of about 0.4 mg/ml, above which the rate of decrease diminished. The effect of initial treatment with monomer or oxidant prior to polymerisation reaction with regards to thickness and surface resistance was minimal. The immersion time of the textile into the monomer solution prior to polymerisation reaction did not have a significant effect on the abrasion resistance. D

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Section: Surface Resistancementioning

confidence: 74%

Polymerising pyrrole on polyester textiles and controlling the conductivity through coating thickness

Lin

Wang

et al. 2005

Thin Solid Films

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“…That is much smaller than the findings of 20-35 phr mentioned above, and even lower than the value of 10-20 phr for short carbon fiber composites reported. 19 Since interconnected conductive paths has already formed in the matrix beyond the percolation threshold, further increasing in filler content just leads to marginally gradual decrease in the resistivity. The resistivity becomes 3.17 · cm for 20 phr sample and further decreases as low as 0.66 · cm for 40 phr sample.…”

Section: Resultsmentioning

confidence: 99%

“…The W c is much lower than that of other CB composites with the value of above 20 phr, and even excels that of the short carbon fiber systems with the value of above 10 phr. 19 There is still a slight deviation between the experimental curve and calculated fitting result for the normalized conductivities. As some preset conditions for the classical percolation theory applied to a insulator-conductor system, the theoretically predicated value shows reasonable agreement with the experimental finding only when the following perquisites are fulfilled: the conducting particles must be spherical, monodisperse and have an isotropic conductivity.…”

Section: Zeng Et Al Low Percolation Threshold Carbon-black/nitrile-bmentioning

confidence: 91%

“…12 Some previous studies also declared that the percolation thresholds of CB filled nitrile rubber composites lie in between 20-35 phr (per hundred rubber), and only between 10-20 phr for short carbon fiber. 19 Nitrile butadiene rubber (NBR) is a polar polymer that can improve the composites' conductivity. In this work, we choose the super conducting CB, presenting excellent conductivity, to make the composites with low threshold and high conductivity.…”

Section: Introductionmentioning

confidence: 99%

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Low Percolation Threshold Carbon-Black/Nitrile-Butadiene-Rubber Composites and Their Electromagnetic Shielding Effects

Zeng

Zhao²,

Yu³

et al. 2013

j. nanosci. nanotech.

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Nitrile-butadiene-rubber composites, filled with super conducting carbon black, are successfully prepared with low percolation threshold, high conductivity and electromagnetic shielding effectiveness. Percolation theory is used to represent the system's conductivity, and the corresponding result is close to the experimental value. The fitting curve also gives the weight fraction threshold and conductivity exponent of the conducting polymer. The percolation threshold of the composite is 9.2 phr, which is much smaller than previous homologous findings and lower than the value of short carbon fiber counterparts reported. The volume resistivity becomes 3.17 omega x cm for the 20 phr sample and decreases to 0.66 omega x cm for the 40 phr sample. At 1.8 GHz for 40 phr sample, the shielding effectiveness is -43 dB.

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“…Various rubbers have been used for preparation of such composites, for example natural rubber, 1 styrene-butadiene rubber, [2][3][4] nitrile rubber, 5 ethylene-propylene-diene rubber, 6,7 silicone rubber, [8][9][10][11] or rubber-rubber blends, etc. [12][13][14] Common conductive fillers include electrically conductive carbon black, [2][3][4][5]7,12,13 graphite, carbon fiber, 1,13-16 carbon nanotube, 17 pure metal, 18 metal-coated inorganic particles, and metal powders. [19][20][21][22] Among different types of conductive fillers, carbon black is the most widely used materials for rubber matrix.…”

Section: Introductionmentioning

confidence: 99%

Study on the structure and properties of conductive silicone rubber filled with nickel‐coated graphite

Zou

Zhang

Tian

et al. 2009

J of Applied Polymer Sci

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In this study, the conductive silicone rubber composites filled with nickel-coated graphite (NCG) have been prepared, and their morphology structure, electrical conductivity, electromagnetic interference shielding efficiency (EMI SE), and mechanical properties have been investigated with reference to the NCG filler loading. The mechanical strength of NCG particle was poor that it can be easily ground into smaller particle during the mixing process if the shear force during mixing is large enough. The electrical conductivity of the composites existed an obvious threshold value with the variation of the loading amount of the conductive filler. EMI SE of the composites increases with the decrease of the volume electrical resistivity. The Payne effect can be used to characterize the intensity of the three-dimensional conductive network structure in silicone rubber matrix, and the difference of storage modulus in the low and high shear strain has good linear correlation with the electrical conductivity. So, the electrical conductivity and EMI SE can be estimated by means of the difference of storage modulus obtained from rubber process analysis test.

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Conductive nitrile rubber composite containing carbon fillers: Studies on mechanical properties and electrical conductivity

Cited by 44 publications

References 10 publications

Polymerising pyrrole on polyester textiles and controlling the conductivity through coating thickness

Polymerising pyrrole on polyester textiles and controlling the conductivity through coating thickness

Low Percolation Threshold Carbon-Black/Nitrile-Butadiene-Rubber Composites and Their Electromagnetic Shielding Effects

Study on the structure and properties of conductive silicone rubber filled with nickel‐coated graphite

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