EP 3222772 A1 20170927 - CARBON FIBER NONWOVEN FABRIC
Title (en)
CARBON FIBER NONWOVEN FABRIC
Title (de)
KOHLEFASERVLIESSTOFF
Title (fr)
TISSU NON TISSÉ EN FIBRE DE CARBONE
Publication
Application
Priority
- JP 2013064153 A 20130326
- JP 2013064284 A 20130326
- JP 2013065674 A 20130327
- EP 14774131 A 20140317
Abstract (en)
A carbon fiber nonwoven fabric in which carbon fibers are sized with an aliphatic compound having a plurality of epoxy groups; the number average x of carbon fibers forming a carbon fiber bundle (1), in which the number of carbon fibers forming the carbon fiber bundle is 90 or more, is in the range of 90 to 1,000 fibers per bundle among the carbon fiber bundles in the carbon fiber nonwoven fabric; and the standard deviation à of the number of carbon fibers forming the carbon fiber bundle (1) is in the range of 50 to 500, wherein said carbon fiber nonwoven fabric is formed from a carbon fiber bundle whose drape value (cm)/single fiber flexural stiffness (Pa·cm 4 ) at 25°C is in a range of 1.5 x 10 3 to 3.0 x 10 3 (cm/(Pa·cm 4 )). It is possible to provide a carbon fiber nonwoven fabric in which high flowability and mechanical properties can be both satisfied with small variability in mechanical properties when a carbon fiber composite material is molded, and which also has an excellent shaping property for a carbon fiber mat.
IPC 8 full level
D04H 1/4242 (2012.01); D06M 13/11 (2006.01); D06M 15/53 (2006.01); D06M 101/40 (2006.01)
CPC (source: EP US)
D04H 1/4242 (2013.01 - EP US); D06M 13/11 (2013.01 - EP US); D06M 15/53 (2013.01 - EP US); D06M 2101/40 (2013.01 - EP US)
Citation (applicant)
- JP 2012158846 A 20120823 - TEIJIN LTD
- JP 2012158847 A 20120823 - TEIJIN LTD
Citation (search report)
- [E] EP 2857439 A1 20150408 - TORAY INDUSTRIES [JP]
- [E] EP 2813532 A1 20141217 - TORAY INDUSTRIES [JP]
- [A] JP 2005264383 A 20050929 - TORAY INDUSTRIES
- [A] DATABASE WPI Week 199512, 1995 Derwent World Patents Index; AN 1995-084853, XP002761285
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2980309 A1 20160203; EP 2980309 A4 20161019; CN 105074082 A 20151118; CN 105074082 B 20161012; EP 3222772 A1 20170927; JP 6108240 B2 20170405; JP WO2014156760 A1 20170216; KR 20150135778 A 20151203; US 2016053432 A1 20160225; WO 2014156760 A1 20141002
DOCDB simple family (application)
EP 14774131 A 20140317; CN 201480012664 A 20140317; EP 17165911 A 20140317; JP 2014057105 W 20140317; JP 2014512995 A 20140317; KR 20157028559 A 20140317; US 201414779437 A 20140317