POLY(PHENYLENE SULFIDE) COMPOSITES HAVING A HIGH DIELECTRIC CONSTANT

Polymeric compositions having a high dielectric constant and low loss tangent are made from poly(phenylene sulfide), a ceramic having a high dielectric constant and a low loss tangent, and optionally an added reinforcing filler. The preferred ceramic is strontium titanate. The compositions have a di...

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Bibliographische Detailangaben
Hauptverfasser:	ZIPP, CHRISTOPHER, HANLEY, STEPHEN, J, WALPITA, LAK, M, CHEN, PAUL, N., SR
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONDUCTORS ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY INSULATORS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PRINTED CIRCUITS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Polymeric compositions having a high dielectric constant and low loss tangent are made from poly(phenylene sulfide), a ceramic having a high dielectric constant and a low loss tangent, and optionally an added reinforcing filler. The preferred ceramic is strontium titanate. The compositions have a dielectric constant of at least about 4. When mica, alumina, or magnesium titanate is used as an added reinforcing filler, the coefficient of thermal expansion diminishes significantly. On obtient des compositions polymères à constante diélectrique élevée et faible tangente d'angle de pertes à partir de sulfure polyphénylène, céramique à constante diélectrique élevée et faible tangente d'angle de pertes, et à partir d'une charge de renforcement facultative. Le titanate de strontium représente la céramique préférée. Ces compositions présentent une constante diélectrique d'au moins 4 environ. Quand on utilise du mica, de l'alumine ou du titanate de magnésium en guise de charge de renforcement ajoutée, le coefficient d'expansion thermique diminue notablement.