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Title:
COMPOSITE MATERIAL PRODUCTION METHOD AND COMPOSITE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/220914
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a production method of a composite material that increases interlayer strength. In this composite material production method, multiple prepregs (10) formed by impregnating a fiber reinforced substrate with an uncured matrix resin are laminated and thermoformed. Prepregs (10) are used that comprise a void layer (12) that does not contain resin and that is continuous in the in-plane direction, and resin layers (11a, 11b) that are arranged on both sides of the void layer; short fibers (13) are arranged on the facing surfaces of a prepreg (10) and a prepreg (10) adjacent to each other, and thermoforming is performed after degassing the void layer (12) by evacuating the laminated prepregs (10).

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Inventors:
TAKEUCHI YUKIO (JP)
AKIYAMA KATSUNORI (JP)
MORISHIMA SHUNICHI (JP)
Application Number:
PCT/JP2019/017623
Publication Date:
November 21, 2019
Filing Date:
April 25, 2019
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
B29C43/56; B29C43/34; B29C70/12; B29C70/44; B32B5/00; C08J5/24; B29K101/10; B29K105/12
Domestic Patent References:
WO2014103658A12014-07-03
Foreign References:
JPH0938968A1997-02-10
JPS465486A1971-11-30
JP2017065181A2017-04-06
JP2014015567A2014-01-30
JP2003080607A2003-03-19
Other References:
See also references of EP 3647012A4
Attorney, Agent or Firm:
FUJITA, Takaharu (JP)
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