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Title:
SIZING-AGENT-COATED CARBON FIBERS, PROCESS FOR PRODUCING SIZING-AGENT-COATED CARBON FIBERS, CARBON-FIBER-REINFORCED COMPOSITE MATERIAL, AND PROCESS FOR PRODUCING CARBON-FIBER-REINFORCED COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2016/143371
Kind Code:
A1
Abstract:
Sizing-agent-coated carbon fibers obtained by coating carbon fibers with a sizing agent comprising at least one of (A) to (C) in a total amount of 80 mass% or more with respect to the whole sizing agent, the carbon fibers each having a surface layer which has a thickness of 10 nm or larger and has an oxygen content of 4% or higher with respect to all the elements, wherein when the sizing-agent-coated carbon fibers are subjected three times to a 10-minute ultrasonic treatment in an acetone solvent, then the amount of the remaining sizing agent is 0.1-0.25 parts by mass per 100 parts by mass of the sizing-agent-coated carbon fibers. (A) At least one polymer selected from the group consisting of polyimides, polyetherimides, and polysulfones (B) A compound having a terminal unsaturated group and a polar group in the molecule (C) A polyether-type aliphatic epoxy compound and/or a polyol-type aliphatic epoxy compound which each have an epoxy equivalent of 250 g/eq or less and have two or more epoxy groups in the molecule

Inventors:
ICHIKAWA TOMOKO (JP)
YOSHIHIRO KAZUKI (JP)
MIZUTA HISAFUMI (JP)
ENDO MAKOTO (JP)
Application Number:
PCT/JP2016/050776
Publication Date:
September 15, 2016
Filing Date:
January 13, 2016
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D06M13/11; C08J5/24; D06M15/59; D06M101/40
Domestic Patent References:
WO2013148999A12013-10-03
Foreign References:
JP2015007300A2015-01-15
JPH062274A1994-01-11
CN103103775A2013-05-15
Other References:
See also references of EP 3266928A4
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