Method for producing long-fiber composite material

A technology for composite materials and manufacturing methods, which is applied in the field of manufacturing thermoplastic long-fiber composite materials, can solve problems such as difficulties in impregnating fiber bundles with resin, and achieve the effect of improving impregnation efficiency

Pending Publication Date: 2022-04-29
SOONCHUNYANG UNIV IND ACAD COOP FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] On the other hand, the process of attaching resin to the fiber bundle and penetrating into the fiber bundle is called the impregnation process, and it is extremely difficult to manufacture a resin-impregnated fiber bundle within the desired manufacturing time only by attaching the resin and expecting penetration through capillary phenomena of

Method used

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  • Method for producing long-fiber composite material
  • Method for producing long-fiber composite material
  • Method for producing long-fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0162] In order to confirm the permeation time of the resin in the manufacturing method of the long-fiber composite material according to the embodiment of the present invention, the following simulation was performed.

[0163] Step 1: Set the osmotic pressure ΔP of the resin to 0.5 atm.

[0164] At this time, the above resin was set to use a zero shear rate viscosity μ of 273 Pa·s 0 , a power-law coefficient n of 0.3, and a polypropylene resin as a power-law non-Newtonian resin.

[0165] Step 2: Set to, thousands of diameters D f A fiber unit of 20 μm is bundled into a glass fiber bundle 200 at 2400 tex, and after being developed to have a width of 24 mm, it is moved toward the lead-out portion 30 .

[0166] Step 3: Set to adjust the distance between the fiber units so that the porosity of the above-mentioned glass fiber bundles is 0.15, and an osmotic pressure of 0.5 atm is applied to the above-mentioned polypropylene resin to penetrate into the inside of the glass fiber...

Embodiment 2-9

[0168] In the above-mentioned Example 1, the simulation was performed using the same method as in the above-mentioned Example 1 except that the porosity was changed to 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, and 0.9, respectively.

Embodiment 10-18

[0170] In the above-mentioned embodiment 1, except that the width of the glass fiber bundle 200 is changed to 12 mm, and the porosity is respectively changed to 0.15, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8 and 0.9, the same method as in the above-mentioned embodiment 1 is used. The same method was simulated.

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Abstract

The present invention relates to: a method for producing a long-fiber composite material in which fiber bundles are impregnated with a non-Newtonian resin; the present invention relates to a method for manufacturing a thermoplastic long-fiber composite material, and more particularly, to a method for manufacturing a thermoplastic long-fiber composite material, which improves the efficiency of a non-Newtonian resin impregnation process by using a mathematical formula (1) that represents the correlation among the permeation pressure, effective viscosity, vertical permeability, and average permeation rate of a non-Newtonian resin, and the thickness of a fiber bundle.

Description

technical field [0001] The present invention relates to a method for manufacturing a long-fiber composite material, in particular to a method for manufacturing a long-fiber composite material in which a fiber bundle is impregnated with a resin. [0002] Furthermore, the present invention relates to a method for producing a thermoplastic long-fiber composite material in which a fiber bundle is impregnated with a non-Newtonian resin (Non-Newtonian resin). [0003] In addition, the present invention relates to a method of manufacturing a thermoplastic long-fiber composite material by using Mathematical Formula 1 expressing the relationship between the osmotic pressure, effective viscosity, vertical permeability, average osmotic velocity, and fiber bundle thickness of a non-Newtonian resin, To improve the efficiency of non-Newtonian resin impregnation process. Background technique [0004] With the increasing demand for high rigidity and lightweight materials in the industrial ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/68B29C70/78C08J5/00C08J5/10B29K105/10
CPCB29C70/682B29C70/78C08J5/005C08J5/10B29K2105/0881C08J5/244C08J5/043C08J2323/12C08J2377/02C08J2377/06C08J2369/00B29C70/025B29C70/081B29B15/122B29C70/003B29C70/28B29C70/54B29C70/504B29K2105/04B29K2105/10
Inventor 李载植
Owner SOONCHUNYANG UNIV IND ACAD COOP FOUND
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