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Title:
VAPOR-GROWN CARBON FIBER COATED WITH ELECTRICAL INSULATOR, METHOD FOR PRODUCING THE SAME, AND USE THEREOF
Document Type and Number:
Japanese Patent JP2002235279
Kind Code:
A
Abstract:

To obtain a vapor-grown carbon fiber coated with a fine fibrous electrical insulator as a heat radiating filler, used for electronic devices, electronic parts, etc., having high thermal conductivity for an electrical insulating composite material and to provide a method for producing the carbon fiber.

This vapor-grown carbon fiber coated with the electrical insulator is obtained by coating the surface of a vapor-grown carbon fiber having 0.01-0.5 μm fiber diameter with the electrical insulator which is boron nitride and has ≥103 Ω.cm resistivity and ≥150 Wm-1K-1 thermal conductivity when consolidated to 0.8 g/cm3 bulk density. The method for producing the electrical insulator-coated vapor-grown carbon fiber coated with the boron nitride comprises mixing the vapor-grown carbon fiber having 0.01-0.5 μm fiber diameter with a boron compound and carrying out heat treatment in the presence of a nitrogen compound at ≥2,000°C.


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Inventors:
MORITA TOSHIO
INOUE HITOSHI
YAMAMOTO TATSUYUKI
Application Number:
JP2001032697A
Publication Date:
August 23, 2002
Filing Date:
February 08, 2001
Export Citation:
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Assignee:
SHOWA DENKO KK
International Classes:
C08K9/02; C08L21/00; C08L101/00; D01F9/127; D06M11/00; D06M11/81; (IPC1-7): D06M11/81; C08K9/02; C08L21/00; C08L101/00; D01F9/127
Domestic Patent References:
JPH0340998A1991-02-21
JPH09132846A1997-05-20
JPH0789776A1995-04-04
JPH09321185A1997-12-12
JPH08283456A1996-10-29
JPH09283955A1997-10-31
JP2778434B21998-07-23
JPH07197264A1995-08-01
JPH03152270A1991-06-28
JPH0860446A1996-03-05
JP2005015339A2005-01-20
Foreign References:
WO2000058536A12000-10-05
Attorney, Agent or Firm:
Kikuchi Seiichi



 
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