Carbon Blacks for Highly Conductive Rubber

Polley, M. H.; Boonstra, Beitske

doi:10.5254/1.3542660

Cited by 111 publications

(33 citation statements)

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“…The breakdown threshold thickness of an epoxy resin layer increases with increasing the length of a CB chain and/or decreasing the diameter of a CB particle. The thickness of the epoxy resin layer between CB particles can be calculated by the following equation [14] …”

Section: Electric Breakdown Of the Compositionsmentioning

confidence: 99%

I-V characteristic and mechanism of carbon black filled epoxy resin matrix composites

2007

SPIE Proceedings

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The I-V characteristic of the epoxy resin matrix composites containing conductive carbon black (CB) and sprayed CB is experimentally studied. The test results indicate that the I-V characteristic of the CB filled epoxy resin matrix composites is affected by the CB diameter. The composites containing sprayed CB with the diameter of 123nm have a linear relation between current and voltage and no variation in resistance post-exposed to an electric field. However, the composites containing conductive CB with the diameter of 33nm have a nonlinear I-V characteristic and the resistance of the composites post-exposed to an electric field decreases dramatically. A DC circuit model based on the experimental research is proposed. The occurrence of the electrical breakdown induces the nonlinear I-V characteristic and the dramatic decrease of the electrical resistance of the composites post-exposed to an electric field.

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Section: Electric Breakdown Of the Compositionsmentioning

confidence: 99%

I-V characteristic and mechanism of carbon black filled epoxy resin matrix composites

2007

SPIE Proceedings

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“…In recent years considerable researches have been devoted to inducing the electrical conductivity in plastic materials (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). One of the techniques for producing the electrical conductivity to plastics is incorporating conducting fillers into the polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

“…Carbon black is one of effective fillers for those conductive polymer composites. It is well known that the electrical conductivity of carbon black filled composite materials strongly de pend on the state of dispersion of carbon black in the matrices (1)(2)(3)(4)(5)(6)(7)(8) . Fibers made of carbon, graphite, metals and other conductive materials are also used as the conducting fillers in order to prepare conductive polymer composite materials (9)(10)(11)(12)(13) .…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity of Carbon Fiber Filled Epoxy Resin Composites Molded by Using Centrifugal Force.

Funabashi

Kitano

1994

Sen-i Gakkaishi

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The sample of epoxy resin filled with chopped carbon fibers was prepared by using centrifugal force in order to make the functionally gradient materials. The fiber content gradient measured by density of samples in the direction of centrifugal force was affected by aspect ratio of fibers and the magnitude of centrifugal force, The volume resistivity of samples was measured by the parallel plate electrodes and by the four-probe method in both directions parallel and perpendicular to the direction of centrifugal force. The values of volume resistivity perpendicular to the direction of centrifugal force was less scattered and lower than those parallel to the centrifugal force direction. The volume resistivity of samples was also affected by aspect ratio of fibers and the magnitude of centrifugal force. The samples show the volume resistivity less than 107 ohm-cm by both methods. It was confirmed by scanning electron microscopic observation that most of fibers aligned perpendicular to the direction of centrifugal force. The results indicated that the conductive composites with the fiber content gradient was prepared by using centrifugal force.

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“…The results obtained were compared with experimental and model data [2,13]. The correctness of modeling of the influence of polymers on the macrostructure geometry of the multicomponent material with variable coefficient of particle packing in agglomerates follows from the data shown in Fig.…”

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confidence: 99%

Modeling of the macrostructure of dispersively filled systems with allowance for their deterministic-stochastic nature

Минакова

Bortnikov

2005

Russ Phys J

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A statistical model of filled polymers is constructed based on computer imitational modeling. It can be used to construct model macrostructures for a wide class of materials to synthesize resistive composites with the desired properties.Progressively increasing requirements for products from multicomponent materials are met mostly through the development of theoretical and methodical background for structural analysis that allows key relationships describing the formation of the material properties to be established. In the applied aspect, this provides the stability of the characteristics and improves the methods and means of designing the composite materials.In the process of synthesis of new materials, the design decisions are often made based on regression models. They consider the influence of an arbitrary number of input factors and their possible combinations on an output parameter, but frequently cannot predict the behavior of materials without experimental investigations. It is well known that to regulate the properties of the material and to design it, a physical and mathematical model is preferable. However, many unsolved problems make the development of theoretical approaches to an analysis of the properties of multicomponent materials difficult. Therefore, model systems, despite certain limitations imposed on their properties, have the advantage of predicting the behavior of new materials and methods of their improvement. An important role is played by models of the macrostructure geometry that provide insight into the nature of the processes controlling the characteristics of the material [1]. A model multicomponent material is considered to be either homogeneous and anisotropic with average effective characteristics or two-component under assumption that the homogeneous and isotropic matrix is arranged inside a periodicity cell [1,2]. Many model data have already been accumulated. The problem existing in this approach is insufficiently scrutinized universal dependences that can be used to estimate the properties of designed multicomponent materials and to control their parameters. Most studies do not use the notion of random variable and the mathematical apparatus of random processes, which does not allow a great variety of statistical factors to be taken into account to obtain the desired characteristics. At the same time, the inhomogeneous structure of multicomponent materials causes the statistical distribution of their parameters that substantially influence the properties of the end product.Rubbers filled with technical carbon are widely used to manufacture the resistive products due to their considerable opportunities of profiling the end products, convenience of assembling, anticorrosive properties, and well-developed industrial production processes [2]. The main disadvantage of these products is an inhomogeneous distribution of the conducting component throughout the matrix volume due to imperfections in the technological production process, inhomogeneity of the supermolecular polymer struc...

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Carbon Blacks for Highly Conductive Rubber

Cited by 111 publications

References 0 publications

I-V characteristic and mechanism of carbon black filled epoxy resin matrix composites

I-V characteristic and mechanism of carbon black filled epoxy resin matrix composites

Electrical Conductivity of Carbon Fiber Filled Epoxy Resin Composites Molded by Using Centrifugal Force.

Modeling of the macrostructure of dispersively filled systems with allowance for their deterministic-stochastic nature

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