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Solid cylindrical fabric and weaving method thereof

A technology of cylinders and fabrics, applied in fabrics, textiles, papermaking, textiles, etc., can solve the problems of low torsional strength, structural damage, skin-core detachment of composite solid shafts, etc., and achieve strong designability of mechanical properties, Good anti-torsion performance and strong operability

Active Publication Date: 2015-09-30
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid cylindrical preform produced by the first method is a uniform, monolithic structure, but the resulting composite solid shaft has low torsional strength
The solid cylindrical preform made by the second method has a skin-core structure. Due to the lack of interweaving between the axial core yarn and the yarn in the skin layer structure, the integrity of the formed fabric is poor, so it is prone to occur during twisting, bending, etc. The skin core is detached, the structure is damaged, and it is difficult for practical application

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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  • Solid cylindrical fabric and weaving method thereof
  • Solid cylindrical fabric and weaving method thereof
  • Solid cylindrical fabric and weaving method thereof

Examples

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Effect test

Embodiment 1

[0049] A solid cylindrical three-dimensional fabric with a cross-sectional diameter of 50mm was developed. 2 Warp yarn 1, weft yarn 2, normal yarn 3 and diagonal yarn 4 are all 12K carbon fibers. The density of yarn rows and columns in the cross-section of the fabric is 5×5 yarns / cm 2 , the movement mode is arranged as [45 / 0 / -45 / 0] 2 , where 45 represents the angle between the +θ oblique yarn and the length direction of the fabric is 45°, -45 represents the angle between the -θ oblique yarn and the length direction of the fabric is -45°, and 0 represents 0 parallel to the length direction of the fabric ° Warp yarn, the subscript represents the number of cyclic arrangements.

[0050] Fabric process parameter design:

[0051] (1) the number of rows (columns) N of yarns in the circumscribed regular quadrilateral of the fabric cross section: the number of yarn rows (columns) N=the diameter of the fabric cross section*yarn row (column) density+1=50 / 10*5 +1=26 rows (columns).

...

Embodiment 2

[0062] A solid cylindrical three-dimensional fabric with a cross-sectional diameter of 60mm was developed. The warp and diagonal yarns are 12K carbon fiber, and the weft and normal yarns are 6K carbon fiber. The density of yarn rows and columns in the cross-section of the fabric is 5×5 yarns / cm 2 , motion arrangement [+θ / 0 / -θ / 0 / 0] 2 , the weft density of the fabric is 8 threads / cm.

[0063] Fabric process parameter design:

[0064] (1) the row (column) number N of the yarn in the regular quadrilateral circumscribed by the fabric cross section: the yarn row (column) number N=the diameter of the fabric cross section×yarn row (column) density+1=60 / 10×5 +1=31 rows (columns);

[0065] (2) Diagonal yarn moving yarn number n: Diagonal yarn moving yarn number n=2.

[0066] (3) The number M of regular octagonal trajectories: the number M of regular octagonal trajectories = the number of arrangements of movement patterns × the number of cycles = 5 × 2 = 10.

[0067] (4) The angle ...

Embodiment 3

[0075] A solid cylindrical three-dimensional fabric with a cross-sectional diameter of 40mm was developed. The warp and diagonal yarns are 12K carbon fiber, and the weft and normal yarns are 9K carbon fiber. The density of yarn rows and columns in the cross-section of the fabric is 7×7 yarns / cm 2 , motion arrangement [+θ / -θ / 0] 3 , the weft density of the fabric is 3.5 threads / cm.

[0076] Fabric process parameter design:

[0077] (1) the number of rows (columns) N of yarns in the circumscribed regular quadrilateral of the fabric cross section: the number of yarn rows (columns) N=the diameter of the fabric cross section*yarn row (column) density+1=40 / 10*7 +1=29 rows (columns).

[0078] (2) Diagonal yarn moving yarn number n: Diagonal yarn moving yarn number n=1.

[0079] (3) The number M of regular octagonal trajectories: the number M of regular octagonal trajectories = the number of arrangement of movement modes × the number of cycles = 3 × 3 = 9.

[0080] (4) The angle ...

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 piece of solid cylindrical fabric and a weaving method thereof. The fabric comprises a warp system, a weft system and a normal yarn system which are perpendicularly crossed; the fabric is characterized by at least further comprising one of a plus theta oblique yarn system and a minus theta oblique yarn system, wherein the plus theta oblique yarn system rotates around the axis of the fabric in the anticlockwise direction to form a regular eight-angular prism left-hand screw shape and is interwoven with the warp system, the weft system and the normal yarn system, and the included angle plus theta formed by plus theta oblique yarn and the length direction of the fabric ranges from 10 degrees to 80 degrees; the minus theta oblique yarn system rotates around the axis of the fabric in the clockwise direction to form a regular eight-angular prism right-hand screw shape and is interwoven with the warp system, the weft system and the normal yarn system, and the included angle minus theta formed by minus theta oblique yarn and the length direction of the fabric ranges from minus 10 degrees to minus 80 degrees. The weaving method is characterized in that the oblique yarn system is introduced through movement of an oblique yarn spindle along a regularly octagonal track.

Description

technical field [0001] The invention relates to a three-dimensional fabric weaving technology, in particular to a solid cylindrical fabric and a weaving method thereof. Background technique [0002] C / C composite material is a new high-performance functional composite material with excellent characteristics such as high specific strength, high specific stiffness, high temperature resistance, friction resistance and low density. It is widely used in aviation, aerospace, machinery, electronics, chemical industry, metallurgy and Nuclear energy and other fields have been widely used. [0003] The reinforced structure of C / C composites usually adopts carbon fiber prefabricated fabric. The literature "Research Progress on Ablation-resistant C / C Composites" (Fu Qiangang et al., New Carbon Materials, 2015, 30(2), 97-105) pointed out that C / C composite preforms usually have carbon cloth laminates, needle Carbon felt, three-directional or multi-directional carbon fiber braids, etc. ...

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): D03D25/00
Inventor 陈利王心淼焦亚男王俊山李新涛张中伟
Owner TIANJIN POLYTECHNIC UNIV
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