Molding material, molding method using same, method for producing molding material, and method for producing fiber-reinforced composite material

Patent metadata

Field	Value
Publication number	US-10023737-B2
Application number	US-201214128868-A
Country	US
Kind code	B2
Filing date	Jun 20, 2012
Priority date	Jun 24, 2011
Publication date	Jul 17, 2018
Grant date	Jul 17, 2018

Abstract

A molded article having high heat resistance and dynamic properties can be easily produced without impairing the economic efficiency and productivity during the process for producing a molding material. In addition, a fiber-reinforced composite material can be produced with more ease and high productivity.

First claim

The invention claimed is:

1. A molding material comprising:
a composite of 1 to 50 wt % of a continuous reinforcing fiber bundle (A) and 0.1 to 20 wt % of a poly (phenylene ether ether ketone) oligomer (B); and
30 to 98.9 wt % of a thermoplastic resin (C) adhering to the composite,
wherein the component (B) has a melting point of not higher than 270° C.

2. The molding material according to claim 1 , wherein the component (B) comprises a cyclic poly (phenylene ether ether ketone) in an amount of 60 wt % or more.

3. The molding material according to claim 1 , wherein the component (B) is a mixture of cyclic poly (phenylene ether ether ketone)s having different numbers of repeating units (m).

4. The molding material according to claim 1 , wherein the composite further comprises 0.001 to 20 mol % of a polymerization catalyst (D) per 1 mol of ether ether ketone structural unit in the component (B).

5. The molding material according to claim 1 , wherein the component (A) contains at least 10,000 carbon fiber monofilaments.

6. The molding material according to claim 1 , wherein the component (C) is at least one selected from polyamide resin, polyetherimide resin, polyamide-imide resin, polyether ether ketone resin, and polyphenylene sulfide resin.

7. The molding material according to claim 4 , wherein the component (D) is an alkali metal salt.

8. The molding material according to claim 1 , wherein the component (A) is arranged substantially parallel to the direction of the shaft center, and the length of the component (A) is substantially the same as the length of the molding material.

9. The molding material according to claim 8 , wherein the composite forms a core structure, and the component (C) surrounds the composite to form a core-sheath structure.

10. The molding material according to claim 9 , wherein the form of the molding material is a long-fiber pellet.

Assignees

• Imai Naokichi
• Tsuchiya Atsuki
• Honma Masato
• Yamashita Kohei
• Horiuchi Shunsuke
• Yamauchi Koji
• Toray Industries

Inventors

• Imai Naokichi
• Tsuchiya Atsuki
• Honma Masato
• Yamashita Kohei
• Horiuchi Shunsuke
• Yamauchi Koji

Classifications

• C08J5/04

  Reinforcing macromolecular compounds with loose or coherent fibrous material · CPC title

• B29C70/521

  and impregnating the reinforcement before the die · CPC title

• C08J2371/12

  Polyphenylene oxides · CPC title

• B29C70/40

  Shaping or impregnating by compression (B29C70/34 takes precedence){not applied} · CPC title

• B29B15/127

  by spraying · CPC title