Morphology of electrically conductive grades of carbon black

Nelson, Jordan R.; Wissing, W.Kent

doi:10.1016/0008-6223(86)90104-1

Cited by 21 publications

(6 citation statements)

References 5 publications

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“…All of these works suggested that CNTs exhibit higher mechanical improvement in the final rubber product compared with conventional CBs filled rubbers obtained by a given mixing method. In these studies, the structural influence of the CBs has not been taken into account, while it is well known that the final properties of CB filled rubber is highly dependent on the microstructure and specific surface area of CB aggregates [34][35][36][37][38]. Highly structured CBs (HSCBs) consist of a great number of primary particles with highly branched clusters exhibiting high surface area towards rubber macromolecules [7,39].…”

Section: Introductionmentioning

confidence: 98%

Mechanical performance of styrene-butadiene-rubber filled with carbon nanoparticles prepared by mechanical mixing

Saatchi

Shojaei

2011

Materials Science and Engineering: A

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Section: Introductionmentioning

confidence: 98%

Mechanical performance of styrene-butadiene-rubber filled with carbon nanoparticles prepared by mechanical mixing

Saatchi

Shojaei

2011

Materials Science and Engineering: A

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“…Since BO is an insulative liquid, a conductive additive was selected among carbon-based materials, due to their low atomic contamination in EDS analysis. Among several forms of carbon, Ketjen Black (porous amorphous carbon nanoparticles) (Nelson & Wissing, 1986) and graphitic materials including GO were our first choices due to their high availability and low cost. We selected GO because a previous study using Ketjen Black as an additive of epoxy resin for serial block-face SEM imaging resulted in the samples suffering from the internalization of Ketjen black into the cells (Nguyen et al, 2016), and because we can chemically control properties such as size and the degree of oxidation when using GO.…”

Section: Resultsmentioning

confidence: 99%

A Novel Cryogenic Adhesive Retaining Fluidity at Dry-Ice Temperature for Low-Temperature Scanning Electron Microscopy

Okada

Chen

2022

Microscopy and Microanalysis

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Scanning electron microscopy operated at cryogenic temperature (cryo-SEM) is a powerful tool for investigating surface and cross-sectional nanostructures of water-containing samples. Typically, cryo-SEM samples are frozen just before observation in specific metal carriers. However, pre-frozen samples are also of interest, such as frozen food and freeze-stored animal samples. In such cases, sample mounting with a defined orientation is required, but there has been a lack of ideal conductive adhesives that can be used without increasing the sample temperature. Here, we developed a mixture of graphite oxide and 1,3-butanediol as an adhesive, capable of gluing samples at dry-ice temperature and is frozen below that temperature. Dispersion of graphite oxide increased the conductivity and reduced the charge-up contrast. Acquisition of energy-dispersive X-ray spectrum, cross-sectional ion milling, and high-resolution imaging were successfully achieved using the adhesive. We tested and confirmed the usefulness of this new adhesive by applying it to cryo-SEM surface imaging of diatomite, freeze-fractured cross-sectional imaging of chicken liver, and ion milling cross-sectional imaging of a deep-sea snail. The new adhesive is not only useful for food science and field-preserved biological samples but also potentially applicable to wider fields such as archaeological and biological samples preserved under permafrost.

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“…The high structure CB-A has many chain-like structures on the surface and the aggregates are mostly grape-like and larger in scope, while the low structure CB-B shows less chain-like structures and smaller aggregates in scope. [16][17][18][19][20]…”

Section: Comparison Of Two Kinds Of Cbmentioning

confidence: 99%

Effect of carbon black type and concentration on the performance of semiconductive shielding material of high‐voltage cable

Liu,

Guo,

et al. 2023

Journal of Polymer Science

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Semiconductive shielding layer as an important part of high‐voltage cable, its performance directly affects the safe operation and the service life of the cable. Carbon black (CB) is the main conductive filler of shielding materials, and its type and concentration directly affect the performance of the shielding layer. In this paper, CB‐A with higher structure and CB‐B with lower structure were used as conductive fillers and EBA was chosen as the matrix resin to prepare the shielding materials. The CB concentrations of the shielding materials were 35, 45, and 55 phr. The influences of CB type and concentration on the physicochemical, electrical, thermal and mechanical properties of the shielding materials were investigated. The research shows that when the CB types are the same, the higher the concentration of CB, the more intensive the CB network in the shielding material, and the more serious the CB agglomeration phenomenon. With increasing CB concentration, shielding materials show a decreasing trend of volume resistivity, an increasing trend of thermal conductivity, and a decreasing trend of mechanical properties. When the CB concentration is the equal, the CB‐A has better dispersion in the matrix resin, CB‐A/EBA shielding material has lower volume resistivity and weaker PTC effect, CB‐A/EBA shielding material has higher thermal conductivity at low temperature and CB‐B/EBA shielding material has higher thermal conductivity at high temperature, CB‐A/EBA shielding material has better mechanical properties. A comprehensive comparison shows that CB‐A/EBA shielding material with a concentration of 45 phr has excellent overall performance, with volume resistivity of 15.3 and 68 Ω·cm at 25°C and 90°C, respectively. The thermal conductivity is 0.434 W/(m K) at room temperature and 0.536 W/(m K) at 90°C. The stress is 31.08 MPa and the strain is 570.2%. This work has important reference for the selection of conductive fillers and performance improvement of semiconductive shielding materials.

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Morphology of electrically conductive grades of carbon black

Cited by 21 publications

References 5 publications

Mechanical performance of styrene-butadiene-rubber filled with carbon nanoparticles prepared by mechanical mixing

Mechanical performance of styrene-butadiene-rubber filled with carbon nanoparticles prepared by mechanical mixing

A Novel Cryogenic Adhesive Retaining Fluidity at Dry-Ice Temperature for Low-Temperature Scanning Electron Microscopy

Effect of carbon black type and concentration on the performance of semiconductive shielding material of high‐voltage cable

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