Chain curing resin composition and fiber-reinforced composite material

Patent metadata

Field	Value
Publication number	US-9416219-B2
Application number	US-201013497884-A
Country	US
Kind code	B2
Filing date	Oct 4, 2010
Priority date	Oct 8, 2009
Publication date	Aug 16, 2016
Grant date	Aug 16, 2016

Abstract

Provided is an RTM moldable chain curing resin composition which can be molded with less energy in a short time, and which makes it possible to obtain a cured product that is superior in mechanical strength. A chain curing resin composition of the present invention includes an alicyclic epoxy compound (A) having two cyclohexene oxides in a molecule and a specific modified bisphenol A-type epoxy resin (B), and the content of the alicyclic epoxy compound (A) is 25 to 90% by mass, when the total of the component (A) and the component (B) is taken as 100% by mass.

First claim

The invention claimed is:

1. A chain curing resin composition for a fiber-reinforced composite material comprising:
an alicyclic epoxy compound (A) having two cyclohexene oxides in a molecule;
a modified bisphenol A-type epoxy resin (B) represented by the following formula (1);
a thermal cationic polymerization initiator; and
a photo-cationic polymerization initiator,
wherein
in the modified bisphenol A-type epoxy resin (B), each R1 is —CH(CH3)-, and R2 is an oxyalkylene group, and
a content of the alicyclic epoxy compound (A) is 25 to 90% by mass, where a total of the component (A) and the component (B) is taken as 100% by mass:

where in the formula (1), n is an integer of 1 or greater.

2. A fiber-reinforced composite material obtained by molding the chain curing resin composition according to claim 1 by a resin transfer molding method.

3. A method of producing the fiber-reinforced composite material of claim 2 comprising,
transferring the chain curing resin composition into a mold containing a reinforcing fiber,
impregnating the reinforcing fiber with the chain curing resin composition, and
curing the chain curing resin composition.

4. The method of producing the fiber-reinforced composite material of claim 3 , wherein the reinforcing fiber is selected from the group consisting of carbon fiber, glass fiber, aramid fiber, high-strength polyester fiber, boron fiber, alumina fiber, silicon nitride fiber, and nylon fiber.

5. The method of producing the fiber-reinforced composite material of claim 3 , wherein a mass per unit area of the reinforcing fiber is in a range of 50 to 700 g/m 2 .

6. The method of producing the fiber-reinforced composite material of claim 3 , wherein the reinforcing fiber is carbon fiber, and an amount of the chain curing resin composition impregnated into the reinforcing fiber is 30 to 70% by mass based on a total mass of the reinforcing fiber and the chain curing resin composition.

7. The method of producing the fiber-reinforced composite material of claim 3 , wherein a mold release sheet is added between a surface of the mold and the reinforcing fiber.

8. The method of producing the fiber-reinforced composite material of claim 7 , wherein the mold release sheet is a glass cloth coated with polytetrafluoroethylene.

9. The method of producing the fiber-reinforced composite material of claim 3 , wherein curing is carried out at a temperature from 140 to 200° C. for 1 to 5 hours.

10. A chain curing resin composition for a fiber-reinforced composite material comprising:
an alicyclic epoxy compound (A) having two cyclohexene oxides in a molecule;
a modified bisphenol A-type epoxy resin (B) represented by the following formula (1);
a liquid bisphenol-type epoxy resin (C);
a thermal cationic polymerization initiator; and
a photo-cationic polymerization initiator,
wherein
in the modified bisphenol A-type epoxy resin (B), each R1 is —CH(CH3)-, and R2 is an oxyalkylene group, and
a content of the alicyclic epoxy compound (A) is 25 to 90% by mass, where a total of the component (A), the component (B), and the component (C) is taken as 100% by mass:

where in the formula (1), n is an integer of 1 or greater.

11. A fiber-reinforced composite material obtained by molding the chain curing resin composition according to claim 2 by a resin transfer molding method.

12. A method of producing the fiber-reinforced composite material of claim 11 comprising,
transferring the chain curing resin composition into a mold containing a reinforcing fiber,
impregnating the reinforcing fiber with the chain curing resin composition, and
curing the chain curing resin composition.

13. The method of producing the fiber-reinforced composite material of claim 12 , wherein the reinforcing fiber is selected from the group consisting of carbon fiber, glass fiber, aramid fiber, high-strength polyester fiber, boron fiber, alumina fiber, silicon nitride fiber, and nylon fiber.

14. The method of producing the fiber-reinforced composite material of claim 12 , wherein a mass per unit area of the reinforcing fiber is in a range of 50 to 700 g/m 2 .

15. The method of producing the fiber-reinforced composite material of claim 12 , wherein the reinforcing fiber is carbon fiber, and an amount of the chain curing resin composition impregnated into the reinforcing fiber is 30 to 70% by mass based on a total mass of the reinforcing fiber and the chain curing resin composition.

16. The method of producing the fiber-reinforced composite material of claim 12 , wherein a mold release sheet is added between a surface of the mold and the reinforcing fiber.

17. The method of producing the fiber-reinforced composite material of claim 16 , wherein the mold release sheet is a glass cloth coated with polytetrafluoroethylene.

18. The method of producing the fiber-reinforced composite material of claim 12 , wherein curing is carried out at a temperature from 140 to 200° C. for 1 to 5 hours.

Assignees

• Nohara Atsushi
• Kaneko Manabu
• Hayashi Noriya
• Mitsubishi Heavy Ind Ltd

Inventors

• Nohara Atsushi
• Kaneko Manabu
• Hayashi Noriya

Classifications

• C08L63/00

  Compositions of epoxy resins; Compositions of derivatives of epoxy resins · CPC title

• C08L2666/22

  Macromolecular compounds not provided for in C08L2666/16 - C08L2666/20 · CPC title

• C08G59/226 Primary

  Mixtures of di-epoxy compounds · CPC title

• C08G59/68

  characterised by the catalysts used · CPC title

• C08J5/04

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