Highly conductive coatings of carbon black/silica composites obtained by a sol-gel process

Enríquez Pérez, Esther; Fernández Lozano, José Francisco y Rubia López, Miguel Ángel de la (2012). Highly conductive coatings of carbon black/silica composites obtained by a sol-gel process. "Carbon", v. 50 (n. 12); pp. 4409-4417. ISSN 0008-6223. https://doi.org/10.1016/j.carbon.2012.05.019.

Descripción

Título: Highly conductive coatings of carbon black/silica composites obtained by a sol-gel process
Autor/es:
  • Enríquez Pérez, Esther
  • Fernández Lozano, José Francisco
  • Rubia López, Miguel Ángel de la
Tipo de Documento: Artículo
Título de Revista/Publicación: Carbon
Fecha: 2012
Volumen: 50
Materias:
Escuela: E.T.S.I. Telecomunicación (UPM)
Departamento: Otro
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 19020
Identificador DC: http://oa.upm.es/19020/
Identificador OAI: oai:oa.upm.es:19020
Identificador DOI: 10.1016/j.carbon.2012.05.019
URL Oficial: http://www.sciencedirect.com/science/article/pii/S0008622312004472
Depositado por: Memoria Investigacion
Depositado el: 07 Sep 2013 08:20
Ultima Modificación: 01 Nov 2014 23:56
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