Carbon fiber bundle and method for producing same

A technology of carbon fiber bundle and manufacturing method, which is applied in the field of carbon fiber bundle and its manufacturing, can solve problems such as poor interface adhesion and insufficient performance of mechanical properties, and achieve good interface adhesion

Active Publication Date: 2012-07-18
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, since polyolefin-based resins are basically non-polar, the interfacial adhesion with carbon fibers and glass fibers is very poor, and as a result, the effect of improving mechanical properties as a reinforcing material is often not fully expressed.

Method used

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  • Carbon fiber bundle and method for producing same
  • Carbon fiber bundle and method for producing same
  • Carbon fiber bundle and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4 and comparative example 1～3

[0285] Carbon fiber-containing pellets were produced as follows using carbon fiber bundles and matrix resins of the types and compounding amounts shown in Table 3.

[0286] In addition, each base resin shown in Table 3 is as follows.

[0287] PP-1: Polypropylene homopolymer (manufactured by Primeman Polymers Co., Ltd., "J-3000GV", MFR=30g / 10min),

[0288] PP-2: Polypropylene homopolymer (manufactured by Primeman Polymers Co., Ltd., "H-50000", MFR=500g / 10min),

[0289] MPP-1: Maleic anhydride-modified polypropylene (manufactured by Toyo Kasei Co., Ltd., "H-1100P", intrinsic viscosity [η] measured in 1,2,3,4-tetralin at 135°C: 0.58dl / g, maleic anhydride content: 5.6% by weight).

[0290] (Manufacture of pellets containing carbon fiber)

[0291] First, PP-1, PP-2, and MPP-1 were mixed in the amounts shown in Table 3, melted at 280° C., and supplied from an extruder to an impregnation tank in a mold.

[0292] On the other hand, the carbon fiber bundles in the blending amounts...

Embodiment 5～21 and comparative example 4～5

[0299] (manufacture of carbon fiber bundle)

[0300] Carbon fiber bundles of the types shown in Tables 4 and 5 were used.

[0301] The sizing agent aqueous dispersion prepared by using the amino group-containing modified polyolefin resin (sizing agent main component) of the types shown in Tables 4 and 5 is filled with a liquid having a concentration of 2.0% by mass and has a free roll. In the impregnation tank, impregnate the carbon fiber bundles, and then dry them with hot air at 150°C for 1 minute.

[0302] Next, heat treatment was performed using the heat treatment conditions (treatment temperature and treatment time) shown in Tables 4 and 5, thereby producing carbon fiber bundles. In addition, the heat treatment was carried out in the muffle furnace, and was carried out in the air. In addition, when heat processing was not performed, it described as "nothing" in a table|surface.

[0303] Tables 4 and 5 show the adhesion amount of the sizing agent of the obtained carbon ...

Embodiment 22～23

[0313] (Manufacture of carbon fiber bundles (CF-6), (CF-7))

[0314] As the carbon fiber bundle, "TR50S-15L" was used, pre-sizing was performed with a water-dispersed pre-sizing agent containing an epoxy compound, and after drying, the carbon fiber bundle was wound on a bobbin to obtain a pre-sizing-treated carbon fiber bundle.

[0315] As a pre-sizing agent, a main agent (a mixture of 50 parts by mass of "Epikote 828" (trade name) manufactured by Japan Epoxy Resin Corporation and 30 parts by mass of "Epikote 1001" (trade name) manufactured by Japan Epoxy Resin Corporation) was used in combination. With an emulsifier (20 parts by mass of "Pluronic F88" (trade name) manufactured by Asahi Denka Co., Ltd.), the conditions were adjusted so that the deposition amount would be 0.4 mass%.

[0316] Next, the pre-sizing-treated carbon fiber bundles are alternately passed through a fiber opening rod (opening bar) and a carbon fiber width control rod multiple times to obtain a predetermi...

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Abstract

Disclosed is a carbon fiber bundle in which an amino group-containing modified polyolefin resin adheres to a carbon fiber bundle and the amount of the amino group-containing modified polyolefin resin adhering to the carbon fiber bundle is 0.2-5.0% by mass. The carbon fiber bundle is able to be produced by having 0.2-5.0% by mass of an amino group-containing modified polyolefin resin adhere to the surface of a carbon fiber bundle. The carbon fiber bundle exhibits excellent interfacial adhesion to polyolefin resins, especially to polypropylene resins, and is useful for the reinforcement of polyolefin resins. Also disclosed is a method for producing the carbon fiber bundle.

Description

technical field [0001] The present invention relates to a carbon fiber bundle used as a reinforcing material for a thermoplastic resin and a method for producing the same, and in particular, to a carbon fiber bundle suitable as a reinforcing material for a polyolefin-based thermoplastic resin and a method for producing the same. [0002] This application claims priority based on Japanese Patent Application No. 2009-207631 for which it applied in Japan on September 9, 2009, and uses the content here. Background technique [0003] A carbon fiber bundle is used as a reinforcing material such as a thermoplastic resin, and has a form in which a plurality of single fibers containing carbon are concentrated. [0004] When used as a reinforcing material of a thermoplastic resin, carbon fiber bundles are usually supplied in a form with a cut length of 5 to 15 mm. When producing the pellets kneaded with the carbon fiber bundles and the thermoplastic resin, it is necessary to supply t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/227B29B15/14C08F8/32D06M15/00D06M101/40
CPCB29B15/12B29K2023/00C08F8/32D06M2101/40D06M15/267B29B15/122C08J5/06D06M15/3562D06M15/227D06M7/00D06M15/263D06M15/285Y10T428/2918C08F210/02D06M15/00B29B15/14
Inventor 杉浦直树岩下亨石居利之大西陆夫
Owner MITSUBISHI CHEM CORP
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