Effect of Silica on the Electrical Properties of Epoxy of Phenolic Resin/Carbon Black/Silica Composite Coating

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Nanocomposites were prepared by embedding carbon black and silica into phenolic resin matrix, which was supported by SEM and particle size analyses. After milling stage, the obtained hybrids were applied to transparency film using K control coater. By the crosslinking procedure, homogenous surface coatings can be achievable. The electrical properties of surface coating can be tailored by variation of silica content with the amount of carbon black fixed. The conductivity of the surface coating increases steeply and then reaches a plateau with the increase of silica. When the weight ratio of silica to carbon black is around 1:2, relatively high conductivity can be desirable. Further increase in silica results in the decrease in conductivity. This can be interpreted in terms of aided or blocked dispersion effects on carbon black imposed by silica. Also, the uniformity of the film is verified by Si-mapping analysis.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

1525-1530

DOI:

10.4028/www.scientific.net/MSF.546-549.1525

Citation:

W. Zhang et al., "Effect of Silica on the Electrical Properties of Epoxy of Phenolic Resin/Carbon Black/Silica Composite Coating", Materials Science Forum, Vols. 546-549, pp. 1525-1530, 2007

Online since:

May 2007

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$35.00

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