Preparation method for integrated three-dimensional multidirectional structural flat-top prefabricated body

A three-dimensional multi-directional, prefabricated body technology, applied in the field of three-dimensional weaving, can solve the problems of low mechanical properties, composite and adverse effects of material properties, etc., and achieve the effect of improving mechanical properties

Active Publication Date: 2012-08-15
YIXING HUAHENG HIGH PERFORMANCE FIBER WEAVING
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention overcomes the problems of low interlayer mechanical properties of the corner interlocking structure in the existing roof capping technology, and the problems that the different structures and preparation processes of the top and the body are likely to cause adverse effects on the composite and material properties, etc., and adopts "beam selection extraction-compensation introduction" Overall preparation of three-dimensional multi-directional flat-top prefabricated body

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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  • Preparation method for integrated three-dimensional multidirectional structural flat-top prefabricated body
  • Preparation method for integrated three-dimensional multidirectional structural flat-top prefabricated body
  • Preparation method for integrated three-dimensional multidirectional structural flat-top prefabricated body

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Effect test

Embodiment 1

[0058] Use T300 carbon fiber 3K two strands to weave a four-step process to weave a three-dimensional four-way square tube-shaped integral capping prefabricated body (see diagram 2-1 ). Prefabricated mandrel size: 106×62×150mm 3 (a×b×h), the wall thickness is 5 mm, and the fiber volume content is 50%. Its preparation method is as follows:

[0059] (1) Weaving process parameter design: Design the weaving process parameters according to the perimeter of the prefabricated body and the fiber volume content, the weaving yarn (all three-dimensional and four-way structures are braided yarn carriers, without axial yarn carriers) [m× n]= 8×324 (the number of columns of side length a is 102, and the number of columns corresponding to length b is 64), the length of female flower nodes is 42.8mm / 10 flower nodes, and the length of circumferential flower nodes is 22.6mm / 10 flower festival.

[0060] (2) Preparation of flat top 1:

[0061] Calculate the total number of starting yarns N=...

Embodiment 2

[0070] Two strands of B-type quartz yarn 195Tex are used to weave a three-dimensional five-direction conical flat-top prefabricated body in a four-step process (see Figure 2-3 ). Preform mandrel size: top Φ X =48mm, body Φ48mm×Φ144 mm×300mm (Φ X ×Φ D × h S ), with a wall thickness of 5 mm and a fiber volume content of 50%, see Figure 8 . Its preparation method is as follows:

[0071] (1) Weaving process parameter design: Design the weaving process parameters according to the outer perimeter and fiber volume content of the flat-top prefab, top: weaving yarn [m×n]= 10 rows×152 columns, axial yarn is 10 rows×152 columns , the length of female flower nodes is 20mm / 10 flower nodes, the length of circumferential flower nodes is 20mm / 10 flower nodes; body: weaving yarn [m×n]= 10 rows×452 columns, axial fixed yarn is 10 rows ×452 columns, see Figure 1-2 , Figure 4-2 ; The length of female flower nodes is 30mm / 10 flower nodes, and the length of circumferential flower nodes...

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 relates to a preparation method for an integrated three-dimensional multidirectional structural flat-top prefabricated body. The invention relates to a three-dimensional weaving technology. According to the preparation method, a three-dimensional multidirectional structure is adopted, and on the basis of preparing a flat tope according to a square four-step method, a body part is prepared by selecting beam for educing and then compensatorily introducing a yarn and the flat top and the body part are integrally weaved and formed. The problems of the present top-sealing preparing technology, such as, low mechanical property between corner interlocking structural layers, easiness in causing adverse impacts on compounding and material property by different structures and preparation technologies for the top and body part, are solved. According to the preparation method provided by the invention, the mechanical properties of the flat top and whole body are effectively increased, the application blank of the three-dimensional weaving technology in the flat-top prefabricated body is filled up, and the technical basis for the application on main and secondary bearing structural components is established.

Description

technical field [0001] The invention relates to a three-dimensional weaving technology, in particular to an integral weaving forming method in which the top and the body are three-dimensional multi-directional structure preforms, and belongs to the technical field of reinforced fiber and weaving. Background technique [0002] Chinese Patent Announcement No. CN1851083, date of announcement is October 25, 2006, and the name is "capped three-dimensional fabric and its weaving method" and discloses a capped three-dimensional fabric and its weaving method. The fabric has a top and a body made of warp yarns and The weft yarn is a non-layered three-dimensional overall structure completed by continuous weaving at one time. This patent solves the difficult problem of integral manufacturing of the top and body of the capping fabric, and has significant progress and advantages compared with the preparation method of separately manufacturing the top and body and then connecting them int...

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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IPC IPC(8): D04C1/06
Inventor 尹锋
Owner YIXING HUAHENG HIGH PERFORMANCE FIBER WEAVING
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