Device and method for forming variable cross-section thin-wall conical carbon fiber perform

A carbon fiber prefabricated body and molding device technology, which is applied in the field of variable cross-section thin-walled conical carbon fiber prefabricated body molding and variable cross-section thin-walled conical carbon fiber prefabricated body molding device field, which can solve the problem of loose fit, low product volume fraction, fiber Reinforcement loose and other problems, to achieve the effect of reducing molding difficulty, excellent mechanical properties, good dimensional stability

Active Publication Date: 2014-04-09
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to overcome the disadvantages of the existing carbon fiber preform forming device in the complex method of forming variable cross-section thin-walled conical carbon fiber preform, the present invention provides a variable cross-section thin-wall conical carbon fiber preform forming device
The forming method of the present invention effectively solves the problems of loose bonding between fabric layers, loose fiber reinforcement and low product volume fraction when directly laying layers through the winding tension in the winding process; Good stability, experience has proved that this method has excellent mechanical properties of tapered variable cross-section thin-walled prefabricated composite materials

Method used

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  • Device and method for forming variable cross-section thin-wall conical carbon fiber perform

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Embodiment 1

[0023] A method for manufacturing a continuous carbon fiber variable cross-section thin-walled conical prefabricated body, using 12K carbon fiber unidirectional cloth and 3K carbon fiber bundles, laying and winding a total of 11 layers.

[0024] Step 1: The first layer is covered with 12K fiber unidirectional cloth along the mold. Cut the 12K carbon fiber unidirectional fabric into a rectangle according to the size of the variable cross-section thin-walled conical prefabricated body. The fiber arrangement direction is consistent with the axial direction of the variable cross-section thin-walled conical prefabricated body. 12K carbon fiber unidirectional fabric, so that it can be laid one circle along the winding mold 4 to form the complete shape of the tapered prefabricated body with variable cross-section and thin wall. The upper flange part is cut into small pieces along the axial direction of the 12K carbon fiber unidirectional cloth fiber, and folded inwards section by sec...

Embodiment 2

[0030] A method for manufacturing a continuous carbon fiber variable cross-section thin-walled conical prefabricated body, using 6K carbon fiber unidirectional cloth and 6K carbon fiber bundles, laying and winding a total of 15 layers.

[0031] Step 1: The first layer is covered with 6K carbon fiber unidirectional cloth along the mold. Cut the 6K carbon fiber unidirectional fabric into a rectangle according to the size of the variable cross-section thin-walled conical prefabricated body. The fiber arrangement direction is consistent with the axial direction of the variable cross-section thin-walled conical prefabricated body. The carbon fiber unidirectional cloth can be laid one circle along the winding mold 4 to form the complete shape of the thin-walled tapered prefabricated body with variable cross-section. The upper flange part is cut into small pieces along the axial direction of the 6K carbon fiber unidirectional cloth fiber, and folded inwards section by section to form...

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Abstract

The invention discloses a device and a method for forming variable cross-section thin-wall conical carbon fiber perform and aims at solving the technical problem of a complex method for forming a variable cross-section thin-wall conical carbon fiber perform by using a current carbon fiber perform forming device. Due to the design of a winding die and design philosophies of paving along with the die, winding and shaping, locating a core die, sewing locally, weaving and reinforcing, the forming device is capable of low-cost continuous preparation of a carbon fiber reinforced composite conical variable cross-section thin-wall part perform body; the method is simple; according to the forming method, four processes of paving, winding, sewing and weaving the fiber are continuously performed on the same device, so that the forming difficulty of the variable cross-section thin-wall conical carbon fiber perform is prominently reduced; in the preparation process, process parameters with influence on reinforced body forming quality and the wall thickness of the perform can be controlled in real time. Compared with the background art, no special expensive equipment is needed in the method; the method is capable of forming freely according to the shape of the needed perform.

Description

technical field [0001] The invention relates to a carbon fiber preform forming device, in particular to a tapered carbon fiber preform forming device with variable cross-section and thin wall. It also relates to a method for forming a tapered carbon fiber preform with variable cross-section and thin wall using the device. Background technique [0002] Carbon fiber reinforced composite materials have the advantages of high specific strength and specific modulus, good fatigue resistance, low thermal expansion coefficient, and good damage safety performance. They have become a strong competitor in lightweight and high-performance structural materials. Electronics and other fields have broad application prospects. The preparation process and method of carbon fiber preforms largely determine the overall performance of composite materials. With the expansion of the application range of carbon fiber reinforced composite materials, it is difficult to form preforms with variable cro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32B29C70/54
CPCB29C70/32B29C70/54
Inventor 齐乐华张丽丹房鑫周计明卫新亮
Owner NORTHWESTERN POLYTECHNICAL UNIV
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