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Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation

A carbon fiber and fiber bundle technology is applied in the field of multifilament preparation methods and devices to avoid uneven tension, ensure accuracy, and have stable and adjustable speed.

Inactive Publication Date: 2016-08-31
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method and device for preparing multifilaments by automatic dipping of carbon fiber bundles. The sample preparation method of carbon fiber multifilament samples in the present invention adopts an automatic dipping device for carbon fiber bundles, through constant tension and Speed, which is conducive to the full infiltration and diffusion of the glue, avoids the problems of uneven tension of manual dipping and damage to the threads caused by spinning, ensures the uniformity of glue on the bundles, saves manual labor costs, and improves the efficiency of dipping

Method used

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  • Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation
  • Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation
  • Method and apparatus for preparing multifilament from carbon fiber strand through automatic impregnation

Examples

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Embodiment 1

[0035] like figure 1 As shown, it is an automatic dipping device for carbon fiber bundles, including: a spinning roll assembly 1, a fiber bundle 2, a dipping tank and a guide wheel device 3, a wire winding frame driving device 4, and a wire winding frame 5. The spinning roller assembly is located above the dipping tank and is perpendicular to the guide wheel in the dipping tank. Two guide wheels are installed in the dipping tank 3.

[0036] According to the national standard GB / T 3362-2005, epoxy resin, curing agent and acetone are prepared in a mass ratio of 10:1:7. In the present invention, the experimental sample adopts T800 carbon fiber from Toray Company of Japan. The wire bundle is connected to a spoke of the wire winding frame 5 from the lower part of the guide wheel through the glue. The number of spokes is 12, and the length of each spoke is 0.375m. The filament winding frame 5 is rotated by the wire winding frame driving device 4 to drive the filament to be wound on...

Embodiment 2

[0038]The automatic dipping device and the carbon fiber samples are the same as those in Example 1. The ratio of the glue solution is changed, and the epoxy resin, curing agent, and acetone are prepared according to the mass ratio of 10:1.5:7. The lower part of the wheel is connected to a spoke of the wire winding frame 5 through the glue, the number of spokes is 12, and the length of each spoke is 0.375m. The filament winding frame 5 is rotated by the wire winding frame driving device 4 to drive the filament to be wound on the wire winding frame 5 at a constant speed. While pulling the towed wire, the damper of the wire-releasing roller 1 is linked with the drive device 4 to stabilize the tension of the towed wire. The length of the dipping tank is 0.5m, and the speed of the winding frame drive device 4 is adjusted to make the filament dipping for 1.5min, and the tension on the fiber bundle is 185cN; The bundled wires in a circle are cut and fixed with the ends of the spokes...

Embodiment 3

[0040] The automatic dipping device and the carbon fiber samples are the same as those in Example 1. The ratio of the glue solution is changed, and the epoxy resin, curing agent, and acetone are prepared according to the mass ratio of 10:2:7. The lower part of the wheel is connected to a spoke of the wire winding frame 5 through the glue, the number of spokes is 12, and the length of each spoke is 0.375m. The filament winding frame 5 is rotated by the wire winding frame driving device 4 to drive the filament to be wound on the wire winding frame 5 at a constant speed. While pulling the towed wire, the damper of the wire-releasing roller 1 is linked with the drive device 4 to stabilize the tension of the towed wire. The length of the dipping tank is 0.5m, and the speed of the winding frame drive device 4 is adjusted to make the strands dipped for 40s, and the tension on the fiber bundle is 425cN; The bundled wires in a circle are cut and fixed with the ends of the spokes as no...

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Abstract

The invention relates to a method and apparatus for preparing multifilament from a carbon fiber strand through automatic impregnation. The apparatus comprises a strand unreeling roller assembly (1), a fiber strand (2), an impregnation tank (3), a strand reeling rack driving unit (4) and a strand reeling rack (5). The carbon fiber strand is pulled out from a strand unreeling roller and passes through the impregnation tank for impregnation, and the impregnated strand is gradually wound on the strand reeling rack and rotates; the impregnation tank contains a glue solution; and the fiber strand on adjacent spokes of the strand reeling rack is cut off and cured so as to obtain the multifilament. The method and apparatus provided by the invention are simple in process and convenient to operate, effectively overcome the defect of instability in artificial sample preparation, guarantee gluing uniformity of the multifilament and improve gluing efficiency.

Description

technical field [0001] The invention belongs to the field of multifilament preparation methods and devices, in particular to a method and device for preparing multifilaments by automatic dipping of carbon fiber bundles. Background technique [0002] As one of the high-tech new materials, carbon fiber has a wide range of uses. It is now mainly used in aerospace, radar, detectors, etc., and it is also involved in civil applications. At present, Japan's Toray Company has developed T1100 grade carbon fibers, while the American Hextal Company has developed M60 grade high modulus carbon fibers. How to obtain the strength and modulus data of these high strength / high modulus carbon fibers and graphite fibers requires Certain test methods and means are used to characterize the mechanical properties. [0003] At present, the tensile properties of carbon fiber multifilaments are mainly tested by manual sample preparation. According to the description of the national standard GB / T3362-...

Claims

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Application Information

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IPC IPC(8): G01N1/30
CPCG01N1/30
Inventor 吕永根蒋俊祺赵卫哲孙颖孙祝林郭潇野李红
Owner DONGHUA UNIV