Memorias de investigación
Artículos en revistas:
Highly conductive coatings of carbon black/silica composites obtained by a sol-gel process
Año:2012
Áreas de investigación
  • Física química y matemáticas,
  • Ingenierías
Datos
Descripción
Abstract: Conductive submicronic coatings of carbon black (CB)/silica composites have been prepared by a sol-gel process and deposited by spray-coating on glazed porcelain tiles. Stable CB dispersions with surfactant were rheologically characterized to determine the optimum CB-surfactant ratio. The composites were analyzed by Differential Thermal and Thermogravimetric Analysis and Hg-Porosimetry. Thin coatings were thermally treated in the temperature range of 300-500degC in air atmosphere. The microstructure of the coatings was determined by scanning electron microscopy and the structure evaluated by confocal Raman spectroscopy. The electrical characterization of the samples was carried out using dc intensity-voltage curves. The coatings exhibit good adhesion, high density and homogeneous distribution of the conductive filler (CB) in the insulate matrix (silica) that protects against the thermal degradation of the CB nanoparticles during the sintering process. As consequence, the composite coatings show the lowest resistivity values for CB-based films reported in the literature, with values of ~7times10 -5Omegam. [All rights reserved Elsevier].
Internacional
Si
JCR del ISI
Si
Título de la revista
Carbon
ISSN
0008-6223
Factor de impacto JCR
Información de impacto
Volumen
50
DOI
Número de revista
12
Desde la página
4409
Hasta la página
4417
Mes
SIN MES
Ranking
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Participantes
  • Autor: ESTHER ENRIQUEZ ICV-CSIC
  • Autor: Jose Francisco Fernández Lozano UPM
  • Autor: Miguel Ángel De La Rubia López UPM
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Propiedades ópticas, eléctricas y magnéticas de materiales y sus aplicaciones (POEMMA)
  • Centro o Instituto I+D+i: Centro de Materiales y Dispositivos Avanzados para Tecnologías de Información y Comunicaciones
  • Departamento: Física Aplicada a las Tecnologías de la Información