Fiber-reinforced molded article and method for producing same

A technology of fiber reinforcement and manufacturing method, which is applied in the field of fiber reinforced molded products and its manufacturing. It can solve problems such as difficult continuous molding, and achieve the effect of small viscosity change, excellent curing, continuous and high-speed drawing molding

Active Publication Date: 2020-09-11
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the drawing molding is stopped in the middle, and the drawing molding is moved again, although the dirt is discharged, the properties of only the stopped part and other parts of the resin-impregnated fiber base material may change, or continuous molding may be difficult.

Method used

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  • Fiber-reinforced molded article and method for producing same
  • Fiber-reinforced molded article and method for producing same
  • Fiber-reinforced molded article and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～5

[0181] The following raw materials were used in these Examples and Comparative Examples. The compounding quantity is described in Table 1A and Table 1B.

[0182] 1. Epoxy resin

[0183] ・"jER" (registered trademark) 630 (para-aminophenol-type epoxy resin, manufactured by Mitsubishi Chemical Co., Ltd.)

[0184] - "jER" (registered trademark) 828 (bisphenol A type epoxy resin, manufactured by Mitsubishi Chemical Co., Ltd.) (It is not included in the category of [A].).

[0185] 2. Anhydride

[0186] Ingredient [B1]: Anhydride having a nadic anhydride structure

[0187] ・"Kayahard" (registered trademark) MCD (Methyl Nadic Anhydride, manufactured by Nippon Kayaku Co., Ltd.)

[0188] Component [B2]: Acid anhydride having a structure of tetrahydrophthalic anhydride or hexahydrophthalic anhydride

[0189] ・HN-2000 (methyltetrahydrophthalic anhydride, manufactured by Hitachi Chemical Co., Ltd.)

[0190] - HN-5500 (Methylhexahydrophthalic anhydride, manufactured by Hitachi Chemica...

Embodiment 7～17 and comparative example 6～10

[0202] In these examples and comparative examples, the raw materials shown below were used to prepare thermosetting resin compositions.

[0203] 1. Epoxy resin

[0204] · "jER" (registered trademark) 630 (p-aminophenol-type epoxy resin, manufactured by Mitsubishi Chemical Co., Ltd.): 95 parts by mass

[0205]- "jER" (registered trademark) 828 (bisphenol A epoxy resin, manufactured by Mitsubishi Chemical Co., Ltd.): 5 parts by mass. (Not included in [A] category.)

[0206] 2. Anhydride

[0207] [B1]: Anhydride having a Nadic anhydride structure

[0208] ・"Kayahard" (registered trademark) MCD (methylnadic anhydride, manufactured by Nippon Kayaku Co., Ltd.): 119 parts by mass

[0209] [B2]: Acid anhydride having a structure of tetrahydrophthalic anhydride or hexahydrophthalic anhydride

[0210] ・HN-5500 (methylhexahydrophthalic anhydride, manufactured by Hitachi Chemical Co., Ltd.): 51 parts by mass

[0211] 3. Filler

[0212] - "Micron Howitto" (registered trademark) #500...

Embodiment 1

[0257] As shown in Table 1A, mixed and prepared by 100 parts by mass of aminophenol type epoxy resin "jER" (registered trademark) 630, 135 parts by mass of anhydride "Kayahard" (registered trademark) MCD, 45 A resin composition consisting of parts by mass of anhydride HN-2000 having a structure of tetrahydrophthalic anhydride, 4 parts of talc as a filler, 3 parts of internal release agent IC-35, and 1 part of imidazole derivative DY070 . As a result of viscosity measurement at 25° C. in the above (2) of the resin composition, it was shown that the viscosity was kept low. In addition, the Tg of the resin cured product is sufficiently high and shows heat resistance. When drawing molding is performed using this resin composition, even if drawing molding is performed at a high speed of 1.2 m / min, it can be formed without generation of fouling or the like. After molding, occurrence of scratches and adhesion of dirt were not observed on the surface of the mold. The results are sh...

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Abstract

Provided is a means by which pultrusion can be continuously performed at high speed and the generation of resin residues that adhere to the inner surface of a mold can be suppressed. The present invention also provides a method for producing a fiber-reinforced molded article, wherein a resin-impregnated fibrous base material obtained by impregnating a reinforcing fiber aggregate of reinforcing fiber bundles with an epoxy resin composition is passed through a pultrusion region and pultruded into a predetermined shape by heat-curing the epoxy resin composition, and the epoxy resin composition contains at least components A to D below. A: An aminophenol-type epoxy resin. B: An acid anhydride having a nadic anhydride structure and an acid anhydride having a hydride structure of a phthalic anhydride. C: At least one filler selected from among a silicon compound, a magnesium compound, a calcium compound, an aluminum compound, and inorganic carbon, and having a Mors hardness of 3 or less. D:A release agent.

Description

technical field [0001] The present invention relates to a fiber-reinforced molded article comprising a resin composition and a method for producing the same. Background technique [0002] Fiber-reinforced resins composed of reinforcing fibers such as carbon fibers and glass fibers and thermosetting resins such as epoxy resins and phenolic resins are lightweight, but have excellent mechanical properties such as strength and rigidity, and properties such as heat resistance and corrosion resistance, so they are used in Various fields such as aviation / cosmos, automobile, railway vehicle, ship, civil construction and sporting goods. In particular, for applications requiring high performance, fiber-reinforced resins using continuous reinforcing fibers are used. As the reinforcing fibers, carbon fibers excellent in specific strength and specific elastic modulus were used, and as the matrix resin, a thermosetting resin was used. As a thermosetting resin, an epoxy resin excellent i...

Claims

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Application Information

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IPC IPC(8): C08J5/04B29C70/52H01B7/18H01B13/00B29K101/10B29K105/08
CPCB29C70/52H01B7/1825C08J5/042C08J2363/00C08J5/243C08J5/249C08J7/04C08L63/00C08G59/42C08G59/5073C08K3/013C08K3/34H01B13/00H01B7/18C08J5/24B29K2063/00B29K2307/04B29K2309/08B29K2507/04C08J5/043C08J5/048C08K3/36
Inventor 冈英树铃木温久
Owner TORAY IND INC
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