Ring spun negative-Poisson's-ratio yarn and compound spinning device and method and application thereof

A negative Poisson's ratio, composite spinning technology, which is applied in the direction of continuous winding spinning machine, spinning machine, yarn, etc., can solve the problem of difficulty in obtaining a higher negative Poisson's ratio, and achieve an obvious negative Poisson's ratio. ratio effect, large Poisson's ratio, and the effect of strong shape memory

Active Publication Date: 2017-11-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] To sum up, the patents given above and the existing research have the following two problems that have not been addressed or resolved: first, whether the negative Poisson’s ratio yarn can break through only the simplest elastic filament/filament Due to the limitation of preparation in the combination, it is more practical to use short-fiber strands/filament composite structure yarns, because short-fiber yarns are usually softer and more...

Method used

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  • Ring spun negative-Poisson's-ratio yarn and compound spinning device and method and application thereof
  • Ring spun negative-Poisson's-ratio yarn and compound spinning device and method and application thereof
  • Ring spun negative-Poisson's-ratio yarn and compound spinning device and method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0059] Embodiment 1: Spin Nomex short fiber / Kevlar filament composite negative Poisson's ratio composite structure yarn

[0060] Using the above-mentioned overfeeding asymmetric two-axis composite spinning device of the present invention, the Kevlar filament bundle is fed into the round table holding roller pair of the overfeed mechanism according to the above method, and then the overfeed enters the front roller nip 4, from the front roller front After the nip is output, it is converged and twisted with the Nomex staple fiber at a convergence angle of 45° to form a yarn. The specific process parameters and yarn measurement data are shown in the table. The physical and mechanical performance parameters of the spun Nomex short fiber / Kevlar filament negative Poisson's ratio composite structure yarn are as follows. Among them, when the Nomex staple fiber / Kevlar filament composite structure yarn is stretched, the Nomex staple fiber strands change from straightening to spiral wrapp...

Embodiment 2

[0061] Example 2: Spinning polyester-cotton staple fiber+elastic yarn / high-strength polyester filament composite negative Poisson's ratio composite structure yarn

[0062] Using the above-mentioned overfeeding asymmetrical three-axis shafting compound spinning device and process of the present invention, the elastic yarn (spandex) is coaxially fed into the front roller nip 4 according to the above method and is directly wrapped by polyester-cotton staple fiber strands , the high-strength polyester filament bundle is fed to the round table gripping roller pair of the overfeed mechanism, and then the overfeed enters the front roller nip 4, and after being output from the front roller front nip, it is mixed with the cotton polyester wrapped with elastic silk at a convergence angle of 22° The staple fiber strands are converged and twisted into yarn, and the specific process parameters and measured data of yarn formation are shown in the table. The physical and mechanical performan...

Embodiment 3

[0063] Example 3: Spinning basalt spun yarn / carbon fiber filament composite negative Poisson's ratio composite structure yarn

[0064] Adopt the above-mentioned overfeeding asymmetric two-axis composite spinning device of the present invention, feed the carbon fiber filament bundle into the round table holding roller pair of the overfeeding mechanism according to the above method, and then overfeed into the front roller nip 4, from the front roller After the jaws are output, the basalt staple fibers are converged and twisted into yarn at a convergence angle of 35°. The specific process parameters and measured data of yarn formation are shown in the table. The physical and mechanical performance parameters of the spun basalt short fiber / carbon fiber filament negative Poisson's ratio composite structure yarn are as follows. Among them, when the basalt staple fiber / carbon fiber filament composite structure yarn is stretched, the Wuyan staple fiber strands change from straightenin...

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PUM

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Abstract

The invention provides a ring spun negative-Poisson's-ratio yarn which includes relatively rigid and externally wrapped-wound endless tows and relatively flexible short fiber strands located in a yarn core. The negative-Poisson's-ratio compound structural yarn obtained through asymmetrical two-axis system compound spinning on a ring spinning frame. When the yarn is stressed and stretched, the stretch wound spirally and externally are straightened, the original straightened and thicker short fiber strands are thus spirally wound externally, so that a yarn body becomes thick to form negative-Poisson's-ratio deformation. The invention also provides a compound spinning device and method and application of the ring spun negative-Poisson's-ratio yarn. The short fiber strands are directly straightened through compound spinning on the ring spinning frame and are output at a central shaft position from a front roller jaw. The endless tows are output from the front roller jaw in a tension-free overfeeding mode and are externally wrapped, wound, compounded and twisted with the short fiber strands at a certain converging angle in an obvious-compressive deformation mode to form the yarn. The device is simple in structure and convenient to operate, and the obtained negative-Poisson's-ratio yarn can be used for negative-Poisson's-ratio fabrics and has a more obvious negative-Poisson's-ratio effect.

Description

technical field [0001] The invention relates to the technical field of negative Poisson's ratio deformable composite yarn and its composite spinning, and is an abnormal negative Poisson's ratio textile and a new preparation technology thereof, in particular to a negative Poisson's ratio composite structure yarn. Background technique [0002] Negative Poisson’s ratio yarn refers to a yarn whose apparent diameter will become thicker due to stretching when the yarn is stretched axially. [0003] Similar to the US patent (P Hook, Uses of auxetic fibers, patent number: US8002879 B2, 2011), the main content is the physical characteristic index of the negative Poisson's ratio fiber aggregate and various uses of the negative Poisson's ratio fiber aggregate. Such negative Poisson's ratio fibers can be used in: interconnected collections of negative Poisson's ratio fibers, which can be in the form of parallel arrays of fiber assemblies, woven fabrics, knitted fabrics, nonwovens, felts...

Claims

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Application Information

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IPC IPC(8): D02G3/38D02G3/04D02G3/32D01H1/18
CPCD01H1/18D02G3/04D02G3/326D02G3/38D10B2101/00D10B2101/06D10B2101/12D10B2101/20D10B2321/022D10B2331/021D10B2331/04
Inventor 于伟东杜赵群周铭高倩
Owner DONGHUA UNIV
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