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Three-dimensional weaving method of novel variable cross-section structure for composite materials

A technology of three-dimensional weaving and composite materials, applied in the directions of woven fabrics, textiles and papermaking, can solve the problems of single arrangement structure of woven yarns, weak mechanical properties at junctions, and difficult to guarantee quality, and achieves convenient weaving process, tight texture, and high quality. Strong mechanical properties

Inactive Publication Date: 2019-05-28
成都成维精密机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. The arrangement structure of the braided yarn is single, and only the equal-section preform whose cross-sectional dimension does not change along the length direction can be prepared
[0008] 2. The mechanical properties of the fabric interface are weak and the quality is difficult to guarantee

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Three-dimensional weaving method of novel variable cross-section structure for composite materials
  • Three-dimensional weaving method of novel variable cross-section structure for composite materials
  • Three-dimensional weaving method of novel variable cross-section structure for composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Such as figure 1 As shown, a new structure three-dimensional weaving method with variable cross-section for composite materials includes the following steps:

[0051] Step 1: Perform a 2.5D shallow cross-bending link structure 7 braiding.

[0052] Step 2: Determine the length and number of strands of the reserved warp yarn 6.

[0053] Step 3: Perform three-dimensional four-way structure 3 weaving using yarn reduction operation and yarn transfer operation.

Embodiment 2

[0055] Such as Figure 1-4 As shown, a new structure three-dimensional weaving method with variable cross-section for composite materials includes the following steps:

[0056] Step 1: Perform a 2.5D shallow cross-bending link structure 7 braiding.

[0057] Step 2: Determine the length and number of strands of the reserved warp yarn 6.

[0058] Step 3: Perform three-dimensional four-way structure 3 weaving using yarn reduction operation and yarn transfer operation.

[0059] The 2.5D shallow cross-bending structure 7 includes woven fibers 2 woven with each other and reserved fibers 1 for weaving a three-dimensional four-way structure 3.

[0060] The three-dimensional four-way structure 3 includes a three-dimensional four-way knitting yarn 5, and the three-dimensional four-way knitting yarn 5 includes warp yarns 6 and weft yarns 4 that are woven with each other.

[0061] The step 2 includes the following steps:

[0062] Step 2.1: Calculate the fiber length in the 2.5D shallow cross-bending...

Embodiment 3

[0078] Such as Figure 1-4 As shown, a new structure three-dimensional weaving method with variable cross-section for composite materials includes the following steps:

[0079] Step 1: Carry out 2.5D shallow cross-bending link structure 7 weaving.

[0080] Step 2: Determine the length and number of strands of the reserved warp yarn 6.

[0081] Step 3: Use yarn reduction operation and yarn transfer operation to perform 3D four-way structure 3 weaving.

[0082] The 2.5D shallow cross-bending structure 7 includes woven fibers 2 woven with each other and reserved fibers 1 for weaving a three-dimensional four-way structure 3.

[0083] The three-dimensional four-way structure 3 includes a three-dimensional four-way knitting yarn 5, and the three-dimensional four-way knitting yarn 5 includes warp yarns 6 and weft yarns 4 that are woven with each other.

[0084] The step 2 includes the following steps:

[0085] Step 2.1: Calculate the fiber length in the 2.5D shallow cross-bending structure 7 ac...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the technical field of three-dimensional weaving, and discloses a three-dimensional weaving method of a novel variable cross-section structure for composite materials. The three-dimensional weaving method comprises the following steps that step1, 2.5D shallow-cross bending connecting structure weaving is carried out; step2, length and number of strands of reserved warp yarns are determined; and step3, three-dimensional four-directional structure weaving is carried out by using yarn-reducing operation and yarn-shifting operation. According to the three-dimensional weaving method of the novel variable cross-section structure for the composite materials, the comprehensive mechanical properties of the woven three-dimensional structure are higher by improving the weaving method.

Description

Technical field [0001] The invention belongs to the technical field of three-dimensional weaving, and specifically relates to a three-dimensional weaving method of a new structure with variable cross-sections for composite materials. Background technique [0002] High-performance fibers are continuously arranged and intertwined in multiple directions in a three-dimensional space. The resulting fiber fabric is called a three-dimensional fabric, which is used as a reinforcement to make advanced composite materials. The shape, structure and quality of the reinforcement of the composite material basically determine the performance of the composite material. Composite materials with three-dimensional fabrics as reinforcements have been successfully applied in high-tech fields such as aviation and aerospace, and have good development prospects. [0003] Both silicon carbide fiber and carbon fiber have high specific strength, high specific modulus, chemical corrosion resistance and excel...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04C1/06
Inventor 不公告发明人
Owner 成都成维精密机械制造有限公司
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