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Title:
STITCHED REINFORCING FIBER BASE MATERIAL, PREFORM MATERIAL, FIBER REINFORCED COMPOSITE MATERIAL, AND MANUFACTURING METHODS FOR SAME
Document Type and Number:
WIPO Patent Application WO/2021/172247
Kind Code:
A1
Abstract:
An objective of the present invention is to provide a stitched reinforcing fiber base material that can inhibit the formation of micro-cracks in fiber reinforced composite materials. A stitched reinforcing fiber base material according to the present invention is formed by using stitching thread to stitch reinforcing fiber sheets formed from reinforcing fibers, the stitching thread having a polar group-containing organic compound adhered thereto. The polar group-containing organic compound is preferably a compound having a polyoxyalkylene skeleton and is preferably a compound having an epoxy group. The amount of the polar group-containing organic compound adhered to the stitching thread is preferably 0.1-10wt% with respect to the mass of the stitching thread.

Inventors:
AKAMATSU TETSUYA (JP)
OSAKI KOHEI (JP)
KANEKO TORU (JP)
Application Number:
PCT/JP2021/006532
Publication Date:
September 02, 2021
Filing Date:
February 22, 2021
Export Citation:
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Assignee:
TEIJIN LTD (JP)
International Classes:
D04H3/04; B29B11/16; B32B5/26; D06M13/11; D06M15/53; B29K105/10
Domestic Patent References:
WO2017104481A12017-06-22
WO2018083734A12018-05-11
WO2020031834A12020-02-13
Foreign References:
JP2012511450A2012-05-24
JP2013522486A2013-06-13
JP2012511450A2010-04-21
Other References:
PIERRE-JACQUES LIOTIER ET AL., COMPOSITES: PART A, vol. 42, 2011, pages 425 - 437
Attorney, Agent or Firm:
TAMEYAMA Taro (JP)
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