ARAMID COMPLEX SHEET, PREPARATION THEREOF AND ELECTRIC AND ELECTRONIC EQUIPMENT AND APPLIANCES HAVING THE SAME

PROBLEM TO BE SOLVED: To provide a sheet which is suitable as an insulating material for use in electronic equipment and appliances, by compounding aramid fibid, aramid flock, mica particles and thermally conductive inorganic particles at a specific ratio and forming the resulting compound into a sh...

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Bibliographische Detailangaben
1. Verfasser:	NAKAISHI AKIO
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CABLES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONDUCTORS ELECTRICITY IMPREGNATING OR COATING OF PAPER INSULATORS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PAPER NOT OTHERWISE PROVIDED FOR PAPER-MAKING PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D PRODUCTION OF CELLULOSE PULP COMPOSITIONS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a sheet which is suitable as an insulating material for use in electronic equipment and appliances, by compounding aramid fibid, aramid flock, mica particles and thermally conductive inorganic particles at a specific ratio and forming the resulting compound into a sheet. SOLUTION: Aramid fibrid(FB), aramid flock(FL), mica particles(M) and thermally conductive inorganic particles(P) are dispersed in water and mixed so that the weight ratios relative to the total weight of the components satisfy formulae I, II and III, and then are formed into a sheet in the same manner as used in manufacturing paper. 'Aramid' means a wholly aromatic polyamide, 'aramid fibrid' means a fine particle of aramid in the form of a film and 'aramid flock' means a short fiber made of aramid. Poly(m-phenylene isophthalamide) is preferred as an aramid, and the thermally conductive inorganic particles are made of aluminum oxide, magnesium oxide, boron nitride, aluminum nitride or beryllium oxide.