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Fiber-reinforced resin composition and method of producing same

A fiber-reinforced resin and composition technology, applied in the field of fiber-reinforced resin composition and its manufacture, capable of solving problems such as cracking, brittle fracture, and brittle failure

Inactive Publication Date: 2019-12-13
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a fiber-reinforced thermoplastic resin composition containing reinforcing fibers, although some excellent impact strength, elastic modulus, etc. are achieved to some extent, there is a problem that stress concentration at the ends of the above-mentioned reinforcing fibers tends to occur. Cracks as the main cause and brittle fracture (brittle failure) caused by the rapid propagation of the cracks

Method used

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  • Fiber-reinforced resin composition and method of producing same
  • Fiber-reinforced resin composition and method of producing same
  • Fiber-reinforced resin composition and method of producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] First, pellets of carbon fiber-reinforced polyamide (PA-CF, "Plastron PA6-CF40", manufactured by Daicel Polymer Co., Ltd.) in which polyamide 6 (PA) and carbon fiber (CF) were pre-mixed at a mass ratio of 3:2 50 parts by mass and 50 parts by mass of polypropylene (PP, "E111G", manufactured by Prime Polymer Co., Ltd., MFR: 0.5 g / 10min) were dry-blended, and then molded in a cylinder using a bench-top injection molding machine (manufactured by Shinko Cellbic Co., Ltd.). Temperature: Melting and kneading at 270° C. to obtain a resin composition, and injection molding at a mold temperature of 135° C. to prepare a sample piece for physical property measurement obtained by molding the resin composition in a JIS K71621BA mold.

Embodiment 2

[0110] In addition to 45 parts by mass of carbon fiber-reinforced polyamide pellets (PA-CF), 47 parts by mass of polypropylene (PP), 3 parts by mass of polyamide 6 (PA, "A1030BRL", manufactured by Unichika Co., Ltd.), polypropylene ( PP, MFR: 0.5g / 10min) and carbon fiber reinforced polypropylene pellets (PP-CF, "Plastron PP-CF40", manufactured by Daicel Polymer Co., Ltd.) 5 mass A sample piece for physical property measurement was produced in the same manner as in Example 1 except that each part was used after dry blending.

Embodiment 3

[0112] In addition to carbon fiber reinforced polyamide pellets (PA-CF) 40 mass parts, polypropylene (PP) 44 mass parts, polyamide 6 (PA) 6 mass parts and carbon fiber reinforced polypropylene pellets (PP-CF) 10 Sample pieces for physical property measurement were produced in the same manner as in Example 1, except that parts by mass were used after dry blending.

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Abstract

The invention relates to a fiber-reinforced resin composition and a method of producing the same. The fiber-reinforced resin composition includes a polyamide resin and a polyolefin resin, and when oneresin between the polyamide resin and the polyolefin resin is set as a first resin, and the other resin is set as a second resin, the composition has a sea-island structure including a continuous phase C consisting of the first resin and a dispersed phase c consisting of the second resin dispersed in the continuous phase C, and in a resin phase separation cross-sectional structure, a total of cross-sectional areas of dispersed phases having a cross-sectional area equal to or smaller than an average cross-sectional area of the reinforcing fiber is 20% or less with respect to a total of cross-sectional areas of all dispersed phases.

Description

technical field [0001] The present invention relates to a fiber-reinforced resin composition and a method for producing the same. Background technique [0002] So far, in order to improve the physical properties of resins, polymer blends and polymer alloys in which properties of resins are modified by mixing resins with different properties have been actively studied. However, in such polymer blends and polymer alloys, for example, in resin compositions in which polarity-different resins such as polyamide resins and polyolefin resins are composited, due to phase differences between the resins, Since the capacity is poor, there is a problem that the strength tends to decrease. [0003] In addition, fiber-reinforced resin compositions containing reinforcing fibers such as carbon fibers and glass fibers in the resin composition have been used in aircraft, automobiles, railway vehicles, ships, and other machinery requiring particularly high It is widely used and actively resea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L77/02C08L51/00C08L77/00C08K7/06C08J5/04
CPCC08K7/04C08L23/00C08L77/06C08J5/042C08J2323/12C08J2477/02C08J2451/00C08J2477/00C08L23/12C08L2205/16C08L2314/00C08J5/043C08J2377/00C08J3/203C08J2377/02C08J2423/12C08J3/226C08L77/00C08K7/06C08L101/00C08K7/14C08K3/04C08J5/04C08J2377/04C08J2377/06C08J2477/04C08J2477/06C08L77/02C08L77/04C08L2205/08C08L2310/00
Inventor 平井隆行福森健三小田哲也永井隆之
Owner TOYOTA JIDOSHA KK
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