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Weaving method for multi-layer and multi-direction fabric

A fabric and oblique technology, applied in the weaving field of multi-layer multi-directional fabrics, can solve the problems of limited designability of fabric structure and mechanical properties, failure to meet the shear resistance of composite materials, etc., to meet the needs of low-cost manufacturing , Improved in-plane shear performance and high production efficiency

Active Publication Date: 2017-07-11
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method, the +θ oblique yarns and -θ oblique yarns must be arranged in pairs and adjacent to each other along the thickness direction of the fabric, and the positions of the two layers cannot be changed, which limits the designability of the structure and mechanical properties of the fabric. Meet the design requirements for the in-plane shear resistance of composite materials

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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  • Weaving method for multi-layer and multi-direction fabric
  • Weaving method for multi-layer and multi-direction fabric
  • Weaving method for multi-layer and multi-direction fabric

Examples

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Effect test

Embodiment 1

[0045] Develop multi-layer multi-directional fabrics with 10 layers, such as figure 2 shown. The width of the fabric is 30cm, including warp yarn 1, weft yarn 2, +θ oblique yarn 3, -θ oblique yarn 4 and normal yarn 5, all using 12K carbon fiber. The warp yarn density is 5 yarns / cm, and the weft yarn density is 5 yarns / cm. The angle between the oblique yarn and the length direction of the fabric is 45°. The arrangement of yarn layers in the thickness direction of the fabric is [90 / 0 / -45 / +45 / 90 / 0 / -45 / +45 / 0 / 90], where: 0 represents 0° warp yarn 1, 90 represents 90° weft yarn 2, +45 represents +θ diagonal yarn 3, and -45 represents -θ diagonal yarn 4. Its weaving method specifically comprises the following steps:

[0046] (1) Main yarn arrangement: According to the design requirements of the fabric structure, the arrangement of the yarn layers of the fabric is [90 / 0 / -45 / +45 / 90 / 0 / -45 / +45 / 0 / 90]. The initial arrangement of main yarns only considers warp yarn 1, +θ oblique yarn ...

Embodiment 2

[0055] A multi-layer multi-directional fabric of 13 layers was developed. The width of the fabric is 50 cm, including warp yarn 1, weft yarn 2, +θ diagonal yarn 3, -θ diagonal yarn 4 and normal yarn 5. Warp yarn 1, weft yarn 2, +θ oblique yarn 3, and -θ oblique yarn 4 all use 190Tex×4 strands of quartz fiber, and the normal yarn uses 190Tex×2 strands of quartz fiber. The warp yarn density is 6 yarns / cm, the angle between the oblique yarn and the fabric length direction is 60°, and the weft yarn density is 5.2 yarns / cm. The arrangement of the yarn layers in the thickness direction of the fabric is [90 / -60 / 0 / +60 / 90 / -60 / 0 / +60 / 90 / -60 / 0 / +60 / 90]. Its weaving method specifically comprises the following steps:

[0056] (1) Main yarn arrangement: According to the design requirements of the fabric structure, the arrangement of the yarn layers of the fabric is [90 / -60 / 0 / +60 / 90 / -60 / 0 / +60 / 90 / -60 / 0 / +60 / 90]. The initial arrangement of main yarns only considers warp yarn 1, +θ oblique ya...

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 discloses a weaving method for a multi-layer and multi-direction fabric, characterized in that the weaving method comprises following steps: (1) arranging main yarn; (2) arranging oblique yarn and side yarn; (3) moving the oblique yarn; (4) introducing normal yarn; (5) introducing weft yarn; (6) compressing yarn; and (7) repeating the steps (3) to (6) until a target length of the fabric i.e., the multi-layer and multi-direction fabric is obtained. The weaving method for the multi-layer and multi-direction fabric can flexibly design the arrangement of an oblique yarn layer in the fabric, which solves the problem that control and adjustment on an oblique angle of the oblique yarn is difficult, and is conductive to the improvement of in-plane shear properties of composites. Moreover, the method has advantages of easy operation, high production efficiency, and stable process, and can meet demands of low cost production of high-performance composites.

Description

technical field [0001] The invention relates to the field of preparation of three-dimensional fabrics, in particular to a weaving method for multi-layer multi-directional fabrics. Background technique [0002] Multi-layer multi-directional fabric is a new type of three-dimensional fabric that has developed rapidly in recent years. It has the characteristics of programmable fiber orientation in the plane, continuous fiber penetration between layers, and integrated fabric structure. It is ideal for resin-based, ceramic-based and carbon-based composite materials. The reinforced structural phase significantly improves the in-plane shear performance of conventional three-dimensional woven composites by introducing in-plane diagonal yarns. [0003] Zhang Yifan and others briefly described two new weaving processes for multi-layer multi-directional fabrics in "Analysis of Mechanical Properties of Multi-layer Multi-directional Fabric Composite Materials". Carry the oblique yarn to ...

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): D03D11/00D03D25/00
CPCD03D11/00D03D25/005
Inventor 陈利王心淼张一帆焦亚男孙颖
Owner TIANJIN POLYTECHNIC UNIV
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