Dielectric properties of flame resistant EPDM composites

Formulations of ethylene-propylene-diene rubber containing mixtures of aluminum hydroxide (ATH) and carbon black (HAF) as fillers were developed, aiming to achieve a synergism in properties, to fit national and international standards for application as insulation in electric wires and cables, yet k...

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Veröffentlicht in:	Polymer degradation and stability 2000-01, Vol.70 (2), p.259-262
Hauptverfasser:	Canaud, Cristine, Visconte, Leila Léa Yuan, Sens, Márcio Antônio, Nunes, Regina Célia Reis
Format:	Artikel
Sprache:	eng
Schlagworte:	Aluminum hydroxide Applied sciences Dielectric properties EPDM compositions Exact sciences and technology Flame resistance Organic polymers Physicochemistry of polymers Polymers with particular properties Preparation, kinetics, thermodynamics, mechanism and catalysts
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	Formulations of ethylene-propylene-diene rubber containing mixtures of aluminum hydroxide (ATH) and carbon black (HAF) as fillers were developed, aiming to achieve a synergism in properties, to fit national and international standards for application as insulation in electric wires and cables, yet keeping the fire resistance. After flammability determination, the developed compositions were analyzed for dielectric constant, dissipation factor, dielectric strength, and volumetric and surface resistivity. It was found that for flame resistance, a minimum amount of 160 phr of ATH must be present. However, this composition contains 15 phr of HAF, which is harmful to the electric properties. Only the composition with 170/7.5 (ATH/HAF) exhibited the desired performance.
ISSN:	0141-3910 1873-2321
DOI:	10.1016/S0141-3910(00)00124-5