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A preparation method of a three-dimensional woven closed cavity structure and its prefabricated parts

A closed, three-dimensional machine technology, applied in textiles, fabrics, textiles and papermaking, etc., can solve problems such as limited anti-extrusion range, and achieve the effects of improving anti-extrusion, optimizing molding methods, and remarkable effects

Active Publication Date: 2022-04-22
NANJING FIBERGLASS RES & DESIGN INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the three-dimensional woven and integrated blanks disclosed in the prior art have a limited anti-extrusion range, so as to provide a method that does not affect the net shape of the shape as much as possible. A method for preparing a three-dimensional woven closed cavity structure that can effectively improve the anti-extrusion performance, and can effectively avoid the fracture and separation of the walls at the joint

Method used

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  • A preparation method of a three-dimensional woven closed cavity structure and its prefabricated parts
  • A preparation method of a three-dimensional woven closed cavity structure and its prefabricated parts
  • A preparation method of a three-dimensional woven closed cavity structure and its prefabricated parts

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Embodiment 1

[0044]The invention relates to a preparation method of a three-dimensional woven closed cavity structure, which comprises three-layer structure weaving, preparation of the cavity structure and sealing of the opening end of the cavity structure. Specifically, it includes using a three-dimensional weaving method to form a cavity structure with open ends on both sides; it also includes setting a closed extension extending from one edge of the opening end during the process of forming the cavity structure by a three-dimensional weaving method 105, the yarn connected to the opposite sides of the free end in the closed extension 105 is the weft yarn 204 to be replaced; the edge of the adjacent closed extension 105 on the open end also forms a filling warp yarn 205 extending from it; then Move the free end of the closed extension 105 towards the open end to cover all or part of the open end, and finally replace the weft yarn 204 to be replaced in the closed extended section 105 with t...

Embodiment 2

[0061] A three-dimensional woven flat plate preform, including the cavity structure prepared by the method for preparing a three-dimensional woven closed cavity structure described in Example 1.

[0062] A carbon fiber-reinforced composite cavity structure, which is obtained by using the above-mentioned three-dimensional woven flat plate prefabricated part, injecting resin and curing at high temperature.

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Abstract

The invention provides a preparation method of a three-dimensional woven closed cavity structure and a prefabricated part thereof. Among them, in a preparation method of a three-dimensional woven closed cavity structure, a closed extension section is added, and an extended filling warp yarn is arranged on the edge of the opening end adjacent to the closed extension section, and the filling warp yarn at the position of the opening end is used to replace the middle of the closed extension section. The weft yarn to be replaced realizes the purpose of forming a closed end of the closed extension section at the position of the open end, thereby effectively realizing the preparation of a closed cavity structure. The invention improves the anti-extrusion and anti-centrifugal strength of the main platform surface of the box body, and at the same time, it can minimize the impact on the shape of the net size of the shape, and the effect is remarkable.

Description

technical field [0001] The invention relates to the technical field of three-dimensional weaving, in particular to a method for preparing a three-dimensional weaving closed cavity structure, a prefabricated part thereof, and a carbon fiber reinforced composite cavity structure prepared from the prefabricated part. Background technique [0002] Fiber-reinforced composite materials are widely used in aviation, aerospace, automobiles, rail transit, ships and other fields due to their advantages of light weight, firmness, toughness, heat resistance, self-support, and being applicable to forming and shaping of a wide range of shapes. [0003] It is known that the cavity structure of the fiber preform manufactured by fiber-reinforced composite material using three-dimensional weaving has a Π-shaped cross-section, that is, there are two ribs extending freely on one side of the platform surface of the main body, and the ribs are used to improve The bending resistance of the main pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D03D25/00D03D15/275D03D1/00
CPCD03D25/005D03D15/00D03D1/00D10B2101/12D10B2505/02
Inventor 王昆周海丽黄建谭焕成张立泉杨凌元李超
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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