PBT-CARBON FIBER COMPOSITES FOR MICROWAVE SHIELDING

Disclosed is a composite comprising from about 50 wt. % to about 99 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 0.1 wt. % to about 15 wt. % of a carbon fiber filler, wherein the carbon fiber has a bulk density of at least 500 g/l and a volume...

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Bibliographische Detailangaben
1. Verfasser:	SILVI, Norberto
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMISTRY COMPOSITIONS BASED THEREON DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS MEASURING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS PRINTED CIRCUITS RADIO DIRECTION-FINDING RADIO NAVIGATION TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	Disclosed is a composite comprising from about 50 wt. % to about 99 wt. % of a thermoplastic resin, wherein the thermoplastic resin comprises a polyester; and from about 0.1 wt. % to about 15 wt. % of a carbon fiber filler, wherein the carbon fiber has a bulk density of at least 500 g/l and a volume electrical resistivity of less than about 2,000 µΩ.cm, with individual filaments that have a length-to-diameter ratio of at least 300, wherein the composition exhibits a Transmission of less than 3% of microwave radiation when observed according to a Free Space method, measured at frequencies of 75 to 110 GHz and wherein the combined weight percent value of all components does not exceed 100 wt. %, and all weight percent values are based on the total weight of the composite.