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Benzoxazine resin composition, prepreg, and fiber-reinforced composite material

A resin composition, benzoxazine technology, applied in the field of prepreg and fiber reinforced composite material, carbon fiber reinforced composite material, benzoxazine resin composition, can solve the problem of low solubility, poor adhesion, benzene Problems such as the increase in viscosity of the oxazine resin composition

Active Publication Date: 2015-01-07
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also using benzoxazine resins, studies on blending tougheners such as thermoplastic resins and thermoplastic elastomers have been conducted, but the solubility of these tougheners in benzoxazine resins is low enough to improve tensile strength There have been problems with the amount of blending
Additionally, incorporation of tougheners will increase viscosity and has been problematic with processing and handling during prepreg manufacture, as well as poor tack and drapability when used in prepregs. good question
[0010] Although polyfunctional phenols have been used as curing agents together with epoxy resins in the prior art (for example, see JP-2012-36347-A), when used as prepregs, due to the resulting benzene The viscosity of the oxazine resin composition increases, but there are problems of insufficient tackiness and insufficient drapability

Method used

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  • Benzoxazine resin composition, prepreg, and fiber-reinforced composite material

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Embodiment

[0155] In the following examples, the benzoxazine resin composition of the present invention and a prepreg and a fiber-reinforced composite material using the same are described in more detail. Hereinafter, methods for producing resin raw materials, prepregs, and fiber-reinforced composite materials used in the present invention, methods for evaluating open-hole compressive strength, and methods for evaluating tensile strength are described. Unless otherwise specified, in the examples, the fabrication and evaluation of the prepregs were carried out under an atmosphere of room temperature (25°C±2°C) and a relative humidity of 50%.

[0156] carbon fiber

[0157] T800S-24K-10E (carbon fiber having 24,000 filaments, tensile strength 5.9 GPa, tensile modulus 294 GPa, tensile strain 2.0%, manufactured by Toray Carbon Fibers America, Inc.).

[0158] Benzoxazine resin

[0159] F-a (bisphenol F-aniline type, manufactured by Shikoku Chemicals Corp.).

[0160] P-d (phenol-diaminodip...

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Abstract

The embodiments herein relate to a benzoxazine resin composition, a prepreg, and a carbon fiber-reinforced composite material. More specifically, the embodiments herein relate to a benzoxazine resin composition that provides a carbon fiber-reinforced composite material that is suitable for use as a manufacture material due to its superior mechanical strength in extreme use environments, such as high temperature and high moisture, as well as a prepreg, and a carbon fiber-reinforced composite material. An embodiment comprises a benzoxazine resin composition having a multifunctional benzoxazine resin; a multifunctional epoxy resin that is a liquid at 40C and has three or more glycidyl groups; a sulfonate ester; and optionally at least one thermoplastic resin. The resin may include an interpenetrating network structure after curing.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Application No. 61 / 664,803, filed June 27, 2012, U.S. Provisional Application No. 61 / 681,834, filed August 10, 2012, and U.S. Provisional Application No. 61 / 681,834, filed May 20, 2013. 61 / 825,259, which are incorporated herein by reference. technical field [0003] The present invention relates to benzoxazine resin compositions, prepregs and fiber reinforced composite materials, such as carbon fiber reinforced composite materials. More specifically, the present invention provides a benzoxazine resin composition for fiber-reinforced composite materials, which has excellent kinetics in extreme use environments (such as high-temperature, high-humidity environments) characteristics, and has excellent mechanical properties, including but not limited to elongation and elasticity after curing, and has excellent mechanical properties when used in combination with reinforcing fibers as ...

Claims

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Application Information

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IPC IPC(8): C08L79/04C08L63/00C08L81/06C08L81/04C08L81/02C08K5/42C08K7/14
CPCC08L79/02C08L81/04C08L81/06C08G73/0233C08K7/06C08L79/04C08L81/02C08L2205/14C08L2205/05C08L2205/03C08L2205/035C08L2205/02C08J2363/00C08J2381/06C08J2379/04C08J5/243C08L63/00C08K5/42C08K5/3435C08L63/04C08J2377/00C08J2481/06C08L2203/12C08L2207/04
Inventor 新井厚仁J·A·萨特怀特J·C·休斯坂田宏明吉冈健一
Owner TORAY IND INC
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