Invention Grant
- Patent Title: Thermoplastic composite material and formed body
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Application No.: US15971718Application Date: 2018-05-04
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Publication No.: US11203673B2Publication Date: 2021-12-21
- Inventor: Motoko Yoshizaki , Makiko Nakano , Takayori Ito , Yukihiro Ikura , Takahiro Iida , Yasumasa Morishima , Hidekazu Hara
- Applicant: FURUKAWA ELECTRIC CO., LTD.
- Applicant Address: JP Tokyo
- Assignee: FURUKAWA ELECTRIC CO., LTD.
- Current Assignee: FURUKAWA ELECTRIC CO., LTD.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JPJP2015-218618 20151106
- Main IPC: C08J5/04
- IPC: C08J5/04 ; B29C70/20 ; B29C43/02 ; B29C70/30 ; B29B15/12 ; B29K23/00 ; B29K105/08 ; B29K307/04

Abstract:
A thermoplastic composite material comprising, a fiber bundle having a polypropylene emulsion impregnated therein and having a plurality of reinforcing fibers lined up in a predetermined direction, and satisfies the following conditions (1) to (4); and a formed body:
(1) A void content of the thermoplastic composite material is 3% or less,
(2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less,
(3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and (4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.
(1) A void content of the thermoplastic composite material is 3% or less,
(2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less,
(3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and (4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.
Public/Granted literature
- US20180251610A1 THERMOPLASTIC COMPOSITE MATERIAL AND FORMED BODY Public/Granted day:2018-09-06
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