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Radial shrink-expandable tubular fabric coupled with structural phase transition and cross-rotation, its preparation method and application

A technology of phase transformation and fabric, applied in the direction of fabric, weaving, textile and papermaking, etc., can solve the problems not related to the preparation method and application provided by the present invention, and not related to tube fabric, etc., to achieve good maintenance, high sampling rate, low The effect of tensile elongation

Active Publication Date: 2019-12-10
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The categories described in these patent technologies only relate to the research on aspects such as compression, shearing, shrinkage, and expansion of small-diameter tubular fabrics, but none of them relate to the tubular fabrics provided by the present invention with radial expansion functions, especially not It relates to a tube fabric that is radially shrinkable and expands due to structural phase transition and cross-braiding cross-rotation coupling provided by the present invention, and its preparation method and use

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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  • Radial shrink-expandable tubular fabric coupled with structural phase transition and cross-rotation, its preparation method and application
  • Radial shrink-expandable tubular fabric coupled with structural phase transition and cross-rotation, its preparation method and application
  • Radial shrink-expandable tubular fabric coupled with structural phase transition and cross-rotation, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Such as figure 1 , 2a As shown in -e, it is a radial contraction-expandable tubular fabric with structural phase transition and cross-rotation coupling. The tubular fabric 1 is made of high-modulus linear elastic warp yarns 12 and soft cross-braided yarns 11 that cross each other symmetrically. The weaving method forms a structurally stable, radially expandable thin tubular fabric.

[0035] The two groups of cross-knitting yarns 11 all use fine-denier weakly twisted crimped Nomex filament yarns, and their own elongation at break does not exceed 8%, and can be flattened and densified during structural phase transition.

[0036] The value of the intersection angle θ when forming between two groups of cross braided wires 11 is 90 °; because the relationship between the cross angle θ and the helix angle φ of the two cross braided wires 11 helices is: θ=180 °-2φ, so the helix angle φ is 45°.

[0037] The warp 12 adopts twisted high-strength and high-modulus optical filame...

Embodiment 2

[0047] Such as figure 1 , 2a As shown in -e, it is a radial contraction-expandable tubular fabric with structural phase transition and cross-rotation coupling. The tubular fabric 1 is made of high-modulus linear elastic warp yarns 12 and soft cross-braided yarns 11 that cross each other symmetrically. The weaving method forms a structurally stable, radially expandable thin tubular fabric.

[0048] The two groups of cross-knitting yarns 11 are all made of fine denier and weakly twisted crimped PBO filament yarns, and their own elongation at break is not more than 8%, and can be flattened and densified during structural phase transition.

[0049] The value of the intersection angle θ when forming between two groups of cross braided wires 11 is 100 °; because the relationship between the cross angle θ and the helix angle phi of the two cross braided wires 11 helices is: θ=180 °-2φ, so the helix angle φ is 40°.

[0050] The warp 12 adopts twisted high-strength and high-modulus ...

Embodiment 3

[0060] Such as figure 1 , 2a As shown in -e, it is a radial contraction-expandable tubular fabric with structural phase transition and cross-rotation coupling. The tubular fabric 1 is made of high-modulus linear elastic warp yarns 12 and soft cross-braided yarns 11 that cross each other symmetrically. The weaving method forms a structurally stable, radially expandable thin tubular fabric.

[0061] The two groups of cross-knitting yarns 11 are all made of fine denier and weakly twisted crimped PI filament yarns, and their own elongation at break does not exceed 8%, and can be flattened and densified during structural phase transition.

[0062] The value of the intersection angle θ when forming between two groups of cross braided wires 11 is 120 °; because the relationship between the cross angle θ and the helix angle phi of the two cross braided wires 11 helices is: θ=180 °-2φ, so the helix angle φ is 30°.

[0063]The warp 12 adopts twisted high-strength and high-modulus opt...

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 radial contraction-expansion tube fabric coupled with structural phase transition and cross rotation, a preparation method thereof and its application as a key component of elongated strip-shaped sampling or a sample collection bag. The tubular fabric is a thin tubular fabric with a stable structure and radial expansion, which is formed by linear elastic warp yarns and cross-knitting yarns in a symmetrically intersecting weaving manner. The preparation method is as follows: preparing warp yarns and cross knitting yarns and putting them on the machine; using a circular knitting machine as the weaving equipment; arranging the warp yarns on the circular knitting machine; Weaving with the warp filaments in sequence to obtain the radial shrinkage-expansion tubular fabric coupled with structural phase transition and cross-rotation. The pipe fabric prepared by the present invention has exquisite and stable structure, high toughness and high modulus, and is easy to prepare; it has high drawability and low tensile elongation; when used as a sampling part and a sample collection bag, it has a high sampling rate and the original The bedding information can be well maintained without loss of samples.

Description

technical field [0001] The invention belongs to the technical field of textile design and tubular fabric weaving, and relates to a tubular fabric with high drawing smoothness and low tensile elongation when stretching takes place along the inner and outer walls of a slender straight circular tube when the pulling movement occurs. and its forming technology. Background technique [0002] At present, there are many reports on the technology and processing technology of tube fabric forming, and there are also some studies on preparation methods and preparation tools. Most of them focus on the traditional structural tube fabrics formed by weaving, knitting, and weaving. There are few studies on tube fabrics with variable structure functions, especially the high-drawing motion of the inner and outer walls of the slender straight circular tube under the action of stretching. Tube fabric with smoothness and low tensile elongation and its forming technology, and tube fabric with ra...

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 Patents(China)
IPC IPC(8): D03D3/02D03D13/00D03D15/08D03D1/00D03D15/56
Inventor 丁作伟刘洪玲于伟东
Owner DONGHUA UNIV
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