Tubular facesheet-linked fabric with ribs additionally arranged in circumferential/axial direction and preparation method thereof

A technology of circular tubular and circumferential ribs, which is applied in fabrics, textiles, textiles and papermaking, etc., can solve the problems of inability to realize vertical and horizontal bidirectional simultaneous reinforcement, and inability to form circular tube fabrics, etc., to achieve improved mechanical properties and good connectivity Effect

Active Publication Date: 2015-09-02
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the profiles of composite materials are becoming more and more complex. The three-dimensional fabrics for composite materials with cylindrical profiles have good integrity and uniform fiber distribution, and are widely used in the aerospace field. In order to improve the strength of composite materials, in most cases, it is necessary to Reinforcing the outer wall of the round tube, but the current method of reinforcing the round tube is to form the round tube and the rib layer separately, and then combine them together by gluing or riveting, so that the performance improvement is very limited. In the Chinese patent (CN1317437C) Although the weaving process of weaving three-dimensional fabrics with special-shaped cross-sections is introduced, the fabric has a certain thickness and cross-sectional shape by using multi-eye healds, including T-shaped, I-shaped, channel steel, and angle steel; It can form reinforced flat fabric and the length of the reinforced layer must be consistent with the length of the flat fabric. It cannot form circular tube fabric, nor can it realize vertical and horizontal two-way simultaneous reinforcement.

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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  • Tubular facesheet-linked fabric with ribs additionally arranged in circumferential/axial direction and preparation method thereof
  • Tubular facesheet-linked fabric with ribs additionally arranged in circumferential/axial direction and preparation method thereof
  • Tubular facesheet-linked fabric with ribs additionally arranged in circumferential/axial direction and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Adopt 2.5D structure, the warp yarn is 195tex quartz fiber × 4 strands, the weft yarn is 195tex quartz fiber × 6 strands, and the wall thickness of the circular tubular layered fabric is 20mm. The design warp yarn density is 8 yarns / cm, and the weft yarn density is 4 yarns / cm. The specific weaving steps are as follows:

[0031] (1) Yarn arrangement: according to the design requirements of the fabric, arrange 10 layers and 70 rows of warp yarns on the multi-eye heddles in the front and rear heald frames of the loom;

[0032] ⑵Shedding movement: the heald lifting device controls the relative movement of the front and rear heald frames up and down, driving the warp yarns to form 11 layers of sheds;

[0033] (3) Introducing the weft yarn: introducing the weft yarn at the opening of the warp yarn in the formed 11-layer shed;

[0034] (4) Circumferential reinforcement: the warp yarn density of the circumferential ribbed layer is 6 threads / cm, and the weft thread density is ...

Embodiment 2

[0040] Orthogonal three-way structure is adopted, the warp yarn is 190tex quartz fiber × 6 strands, the weft yarn is 190tex quartz fiber × 8 strands, the wall thickness of the circular tubular layered fabric is 14mm; the design warp yarn density is 6 yarns / cm, and the weft yarn density is 4 yarns / cm cm. The specific weaving steps are as follows:

[0041] (1) Yarn arrangement: According to the design requirements of the fabric, arrange 6 layers of 50 rows of warp yarns on the multi-eye heddles in the front and rear heald frames of the loom;

[0042] ⑵Shedding movement: the heald lifting device controls the relative movement of the front and rear heald frames up and down, driving the warp yarns to form a 7-layer shed;

[0043] (3) Introducing the weft yarn: introducing the weft yarn at the opening of the warp yarn in the formed 7-layer shed;

[0044] (4) Circumferential reinforcement: the warp yarn density of the circumferential rib layer is 6 threads / cm, and the weft thread den...

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 tubular facesheet-linked fabric with ribs additionally arranged in the circumferential/axial direction and a preparation method thereof. The tubular facesheet-linked fabric with the ribs additionally arranged in the circumferential/axial direction comprises round tubes and rib layers in the circumferential/axial direction; the rib layers are integrally formed with the round tubes. The tubular facesheet-linked fabric with the ribs additionally arranged in the circumferential/axial direction and the preparation method of the tubular facesheet-linked fabric can achieve integrally rib adding in the circumferential direction and the axial direction at any position of the tubular facesheet-linked fabric, the rib dimensions and the fiber volume content can be designed, the structure is intact, and the rib layers in the circumferential/axial direction are well connected with the tubular facesheet-linked fabric, so the problem of integral bidirectional rib adding of the tubular facesheet-linked fabric is solved; in addition, as fibers in the thickness direction of the rib layers and the tubular facesheet-linked fabric are continuous, the connection effect is far superior to that of an original gluing or riveting mode; according to tests of the composite fabric, the performance of the fabric can totally meet the requirement of the design index and the fabric has a practical application value.

Description

technical field [0001] The invention relates to a circular tubular layered fabric with circumferential and / or axial reinforcement and a preparation method thereof, belonging to the field of three-dimensional fabric weaving. Background technique [0002] High-performance fibers are continuously arranged and entangled in multiple directions in three-dimensional space, and the formed fiber fabric is called three-dimensional fabric (referred to as fabric), and three-dimensional fabric is used as a reinforcement to make advanced composite materials. Composite materials with three-dimensional fabrics as reinforcements have been successfully used in high-tech fields such as aviation and aerospace, and have good development prospects. [0003] At present, the profiles of composite materials are becoming more and more complex. The three-dimensional fabrics for composite materials with cylindrical profiles have good integrity and uniform fiber distribution, and are widely used in the ...

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): D03D25/00
Inventor 朱建勋乔志炜张立泉郭洪伟
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD
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