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Abstract:

An extensive work was performed to analyze how and why electrical properties of carbon black filled rubber compounds change during thermal aging. Several compounds were prepared using different polymer matrices and a broad range of carbon black types. Electrical resistivity of cured and uncured samples was measured, under different conditions, during thermal aging at constant temperature. Other experimental techniques, like transmission electron microscopy, bound rubber measurements and gamma irradiation were also used. Contrary to previous works, it was found that the changes of the electrical resistivity might be explained without any movement of carbon black aggregates during aging. Additionally, a new dependence of the variation of electrical resistivity with carbon black loading is reported and analyzed. This dependence could be the source of the contradictory data and conclusions in previous works. A correlation between the increment of electrical conductivity and the increment of bound rubber during thermal aging was found. This fact suggests that polymer chains and polymer-filler interaction are responsible for the changes during thermal aging instead of aggregate movement. © 2003 Elsevier Ltd. All rights reserved.

Registro:

Documento: Artículo
Título:Thermal aging of carbon black filled rubber compounds. I. Experimental evidence for bridging flocculation
Autor:Schwartz, G.A.; Cerveny, S.; Marzocca, Á.J.; Gerspacher, M.; Nikiel, L.
Filiación:Departamento de Física, Universidad de Buenos Aires, Ciudad Universitaria, (1428) Buenos Aires, Argentina
Sid Richardson Carbon Co., 4825 N. Freeway, Fort Worth, TX 76106, United States
Department of Applied Physics, Chalmers University of Technology, Goteborg SE412 96, Sweden
Palabras clave:Carbon black; Electrical resistivity; Polymer composite materials; Carbon black; Electric conductivity; Flocculation; Thermal effects; Transmission electron microscopy; Thermal aging; Rubber; carbon; rubber; Flocculation; article; bridging flocculation; carbon mineralization; chemical interaction; correlation analysis; data analysis; electric resistance; electrical conductivity parameters; electrochemical analysis; flocculation; gamma radiation; heating; polymerization; sampling; temperature measurement; thermal analysis; transmission electron microscopy
Año:2003
Volumen:44
Número:23
Página de inicio:7229
Página de fin:7240
DOI: http://dx.doi.org/10.1016/j.polymer.2003.09.007
Título revista:Polymer
Título revista abreviado:Polymer
ISSN:00323861
CODEN:POLMA
CAS:carbon, 7440-44-0; rubber, 9006-04-6
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00323861_v44_n23_p7229_Schwartz

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Citas:

---------- APA ----------
Schwartz, G.A., Cerveny, S., Marzocca, Á.J., Gerspacher, M. & Nikiel, L. (2003) . Thermal aging of carbon black filled rubber compounds. I. Experimental evidence for bridging flocculation. Polymer, 44(23), 7229-7240.
http://dx.doi.org/10.1016/j.polymer.2003.09.007
---------- CHICAGO ----------
Schwartz, G.A., Cerveny, S., Marzocca, Á.J., Gerspacher, M., Nikiel, L. "Thermal aging of carbon black filled rubber compounds. I. Experimental evidence for bridging flocculation" . Polymer 44, no. 23 (2003) : 7229-7240.
http://dx.doi.org/10.1016/j.polymer.2003.09.007
---------- MLA ----------
Schwartz, G.A., Cerveny, S., Marzocca, Á.J., Gerspacher, M., Nikiel, L. "Thermal aging of carbon black filled rubber compounds. I. Experimental evidence for bridging flocculation" . Polymer, vol. 44, no. 23, 2003, pp. 7229-7240.
http://dx.doi.org/10.1016/j.polymer.2003.09.007
---------- VANCOUVER ----------
Schwartz, G.A., Cerveny, S., Marzocca, Á.J., Gerspacher, M., Nikiel, L. Thermal aging of carbon black filled rubber compounds. I. Experimental evidence for bridging flocculation. Polymer. 2003;44(23):7229-7240.
http://dx.doi.org/10.1016/j.polymer.2003.09.007