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Reinforced fiber bundle base material and manufacturing method thereof, and fiber-reinforced thermoplastic resin material using same and manufacturing method thereof

A thermoplastic resin and reinforced fiber technology, applied in carbon fiber, fiber treatment, non-woven fabrics, etc., can solve the problems of thermoplastic resins such as reduced FRTP mechanical properties, high melt viscosity, and low FRTP productivity, and achieve excellent unwinding, high Effect of Width Precision

Active Publication Date: 2022-06-28
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in general, thermoplastic resins have higher molecular weight and higher melt viscosity than thermosetting resins, making it difficult to melt impregnate reinforcing fibers and reduce porosity
Therefore, low-porosity FRTP obtained by impregnating reinforcing fibers with a high-molecular-weight and high-viscosity thermoplastic resin has low productivity and high production costs.
On the other hand, the mechanical properties of FRTP using low-molecular-weight and low-viscosity thermoplastic resins that are easy to impregnate are greatly reduced, and the use of FRTP is limited.

Method used

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  • Reinforced fiber bundle base material and manufacturing method thereof, and fiber-reinforced thermoplastic resin material using same and manufacturing method thereof
  • Reinforced fiber bundle base material and manufacturing method thereof, and fiber-reinforced thermoplastic resin material using same and manufacturing method thereof
  • Reinforced fiber bundle base material and manufacturing method thereof, and fiber-reinforced thermoplastic resin material using same and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0221] The fiber bundle [A-1] was unwound at a constant speed of 10 m / min using a winder, passed through a vibrating widening roll vibrating in the axial direction at 10 Hz, and subjected to widening treatment, and then passed through a width restricting roll having a width of 50 mm to thereby A widened fiber bundle widened to 50 mm was obtained.

[0222] The obtained widened fiber bundle was unwound at a constant speed of 5 m / min, and was continuously immersed in a sizing treatment liquid obtained by diluting the sizing agent [S-1] with purified water, and the primary sizing agent was applied to the sizing agent [S-1]. The fiber bundle was widened, and then the above-mentioned widened fiber bundle coated with the primary sizing agent was supplied to a 150° C. hot roll and a 200° C. drying furnace (under an air atmosphere), and dried to remove moisture. The resulting widened fiber bundle after the primary sizing agent was applied was calculated based on the method for measurin...

Embodiment 2

[0228] Except having made the coating resin [P-1] adhesion amount 0.5 wt %, it carried out similarly to Example 1, manufactures, and evaluated. When a reinforcing fiber bundle base material of 1,500 m was produced, yarn breakage and winding were not caused at all, and the reinforcing fiber bundle base material could be produced with a stable width, and the process passability was good. The number of fibers per unit width of the obtained reinforcing fiber bundle base material was 1,111 fibers / mm, and the drape value D1 was 153 mm.

[0229] Next, the obtained reinforcing fiber bundle base material was continuously inserted into the fiber placement head, and the reinforcing fiber bundle was spun in one direction on a stand to produce a reinforcing fiber base material in a square shape of 250 mm×250 mm. There is also no problem in comfort, yarn breakage and winding are not caused at all, and the reinforcing fiber base material can be produced with a stable width and bundle interva...

Embodiment 3

[0232] The evaluation was carried out in the same manner as in Example 1, except that the coating resin [P-1] adhesion amount was set to 1 wt %. As a result, when the reinforcing fiber bundle base material of 1,500 m was produced, yarn breakage and winding were not caused at all, and the reinforcing fiber bundle base material was obtained with a stable width, and the process passability was good. The number of fibers per unit width of the obtained reinforcing fiber bundle base material was 1,020 fibers / mm, and the drape value D1 was 171 mm.

[0233] Next, the obtained reinforcing fiber bundle base material was continuously inserted into the fiber placement head, and the reinforcing fiber bundle was spun in one direction on a stand to produce a reinforcing fiber base material in a square shape of 250 mm×250 mm. There is also no problem in comfort, yarn breakage and winding are not caused at all, and the reinforcing fiber base material can be produced with a stable width and bun...

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Abstract

A reinforcing fiber bundle base material, wherein a sizing agent containing at least a polyamide-based resin is attached to the surface of the reinforcing fiber, and the number of fibers per unit width contained in the reinforcing fiber bundle is 600 or more per mm and less than 1,600 / mm, and the drape value of the reinforcing fiber bundle is not less than 120 mm and not more than 240 mm. Also, a method for producing a reinforcing fiber bundle base material, a fiber-reinforced thermoplastic resin material using a reinforcing fiber bundle base material, and a method for producing the same. We provide reinforced fiber bundle base materials with excellent shape stability and impregnation properties that can be applied to various molding methods such as fiber placement and fiber-reinforced thermoplastic resin molding materials.

Description

technical field [0001] The present invention relates to a reinforcing fiber bundle base material excellent in handleability, less fluff, morphological stability, and further excellent in impregnation properties, and a method for producing the same. Background technique [0002] Fiber-reinforced resin (FRP) obtained by impregnating reinforcing fibers with matrix resin satisfies required properties such as excellent mechanical properties and light weight, and is therefore mainly used for aviation, aerospace, and sports applications. As a typical production method thereof, an autoclave molding method is known. In this molding method, a prepreg obtained by impregnating a reinforcing fiber bundle group with a matrix resin in advance is stacked on a molding die, and heated and pressurized in an autoclave to shape FRP. When a prepreg is used, there is an advantage that a highly reliable FRP can be obtained, but there is a problem of high cost in manufacturing. [0003] On the oth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29B15/12C08J5/06D06M15/55D06M15/59B29K105/08
CPCD06M15/59D06M15/55C08J5/06B29B15/125D04H3/002D04H3/12D03D1/00D02J1/18C08J5/042D06M2101/40D04H3/115B26D3/16B29B9/06C08J5/08C08J5/243C08J5/248C08J2377/00C08J2477/00B29B9/14B29B7/42B29B7/905B29B7/007D03D15/267D03D15/275D10B2505/02B29B15/10B29C70/06D04H1/00B29K2105/0872B29K2077/00Y10T442/2402C03C25/00
Inventor 布施充贵馆山胜平野宏清家聪松井明彦浦和麻
Owner TORAY IND INC
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