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A stable structure auxetic composite yarn and its preparation device, method and application

A technology for preparing devices and stabilizing structures, applied in the field of spinning, can solve the problems of easy untwisting, difficult yarn, difficult spinning and weaving, etc., and achieve the effect of good forming, obvious auxetic effect and stable shape

Inactive Publication Date: 2019-02-26
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires the number of the first yarn and the second yarn to be the same and more than 2. Since the yarn structure is mainly formed by twisting each component, in order to provide the forming structure of the yarn, the yarn The selection of yarn types is very limited, and it also limits the application fields of negative Poisson's ratio yarns
However, the yarn prepared by the above method has a large residual torque, is easy to untwist, and is difficult to spin and weave. Although it can be cured with resin, it is relatively hard and difficult to be used as a yarn for taking
[0004] Therefore, to innovate the spinning device and method of the existing auxetic composite yarn, to solve the problems of uneven yarn structure, limitation of spinning method, unsuitability for continuous production, etc., there is an urgent need for simple and universal spinning device and method for spinning structure Uniform and stable yarn with auxetic effect to promote its wide application in various fields

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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  • A stable structure auxetic composite yarn and its preparation device, method and application
  • A stable structure auxetic composite yarn and its preparation device, method and application
  • A stable structure auxetic composite yarn and its preparation device, method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 spandex / nylon auxetic composite yarn preparation

[0036] Such as figure 1 As shown, a device for preparing the above-mentioned auxetic composite yarn with stable structure includes a control structure capable of controlling yarn component feeding and a composite yarn forming and winding mechanism, and the yarn component feeding control structure includes a core Yarn feeding control mechanism and covered yarn feeding control mechanism; the core yarn feeding control mechanism includes a core yarn bobbin 11, a positive yarn feeding roller 12, a fixed frame 15 and a yarn guide tube 16, and the core yarn The bobbin 11 is placed on the active yarn feeding roller 12, the side of the fixed frame 15 close to the core yarn bobbin 11 is provided with a yarn guide hole 13, and the other side is provided with a tension disc 14, and the yarn guide tube 16 is arranged above the tension disc 14 ,Such as figure 2 As shown, the elastic core yarn 1 on the core yarn tube 1...

Embodiment 2

[0048] Example 2 Preparation of Spandex / UHMWPE Auxetic Composite Yarn

[0049] The preparation device described in Example 1 is used to spin the structurally stable auxetic composite yarn comprising multiple filaments, and one spandex filament and four ultra-high molecular weight polyethylene filaments are respectively selected as the elastic core yarn and covering Yarn, all the other operation steps are identical with embodiment 1, do not repeat description here. The specific process parameters are shown in Table 1.

[0050] Such as Figure 4 As shown, the obtained auxetic composite yarn with a stable structure includes a covering yarn 2 and an elastic core yarn 1, and the covering yarn 2 is cross-wrapped on the surface of the elastic core yarn 1, and has a negative Poisson's ratio effect.

[0051] In order to verify the innovative contribution of the present invention, according to the ISO 3343-2010 international standard method, implement the test of the curled length and...

Embodiment 3

[0052] Example 3 Preparation of spandex / high-strength polyester yarn auxetic composite yarn

[0053] Adopt the preparation device described in Example 1 to implement the spinning of the structurally stable auxetic composite yarn comprising multi-filaments, select 1 spandex and 2 high-strength polyester filaments as elastic core yarn and covering yarn respectively, and the remaining operation steps are the same as Embodiment 1 is the same and will not be repeated here. The specific process parameters are shown in Table 1.

[0054] Such as Figure 4 As shown, the obtained auxetic composite yarn with a stable structure includes a covering yarn 2 and an elastic core yarn 1, and the covering yarn 2 is cross-wrapped on the surface of the elastic core yarn 1, and has a negative Poisson's ratio effect.

[0055] In order to verify the innovative contribution of the present invention, according to the ISO 3343-2010 international standard method, the test of the curled length and the n...

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 provides a stable structure stretching composite yarn, and a preparation device, a method and use thereof. The stable structure stretching composite yarn is characterized by comprising wrap yarns and elastic core yarns, the wrap yarns are twisted on the surfaces of the elastic core yarns in an intercrossing manner and have a Poisson ratio effect. The stretching composite yarn is good in formation, stable in structure, unique in performance and obvious in stretching effect, a proper raw material can be selected to apply to human body protection fabrics, biomedical materials, engineering materials and the like, meanwhile the spinning device is refitted based on a miniature knitting machine, and the spinning method is easy to operate, is convenient to implement, low in cost and is suitable for continuous production and application.

Description

technical field [0001] The invention belongs to the technical field of spinning, and relates to a device and method for preparing auxetic composite yarn with stable structure in a high-elasticity and super-flexible covering type. Background technique [0002] The traditional yarn is a positive Poisson's ratio material, that is, when it is stretched (or compressed) in a certain direction, it will shrink (or expand) and deform perpendicular to the direction of the force. The auxetic yarn is a material with a negative Poisson's ratio, that is, when it is stretched (or compressed) in a certain direction, it will expand (or shrink) perpendicular to the direction of the force. Under a certain axial tension, the radial profile of the auxetic composite yarn increases, which has unique characteristics superior to traditional positive Poisson’s ratio yarns. It is suitable for warm clothing in winter, that is, it is made of auxetic yarn When the finished clothing fabric is dynamically...

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): D02G3/04D02G3/32
CPCD02G3/045D02G3/328D10B2321/021D10B2331/02D10B2331/04D10B2331/10
Inventor 杜赵群刘赛何玲娥
Owner DONGHUA UNIV
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