Pre-wrapping-pipe-front-mounted composite negative-poisson's-ratio-yarn spinning device and method and application

A technology of negative Poisson's ratio and composite spinning, which is applied in spinning machine, yarn, textile and papermaking, etc., can solve the problem that it is difficult to obtain a higher negative Poisson's ratio, and achieve obvious negative Poisson's ratio effect, Easy to install effect

Active Publication Date: 2017-10-13
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] 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 the preparation in the combination, it is more practical to use the composite structure yarn of short-fiber strands/filaments, because short-fiber yarns are usually softer and more easily deformed, and it

Method used

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  • Pre-wrapping-pipe-front-mounted composite negative-poisson's-ratio-yarn spinning device and method and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0061] Example 1: Spinning composite yarn of negative Poisson's ratio of Nomex staple fiber / Kevlar filament

[0062] Using the above-mentioned pre-wrapped tube composite spinning device of the present invention, the Kevlar filament bundle is fed into the holding roller pair of the overfeeding mechanism 2 in the above-mentioned manner, and then the overfeed enters the pre-wrapped tube 1 and exits the pre-wrapped tube. The yarn mouth 12 is axially converged and twisted with Nomex staple fiber to form a yarn. The specific process parameters and actual measured data of the yarn are shown in the table. The physical and mechanical performance parameters of the spun Nomex staple fiber / Kevlar filament negative Poisson's ratio composite yarn are as follows. Among them, when the Nomex staple fiber / Kevlar filament composite yarn is stretched, the Nomex staple fiber strand changes from straightening to spiral wrapping; the Kevlar filament bundle changes from spiral wrapping to straight core ...

Example Embodiment

[0063] Example 2: Spinning composite yarn of negative Poisson's ratio of polyester / cotton staple fiber + stretch yarn / high-strength polyester filament

[0064] Using the above-mentioned pre-wrapped tube composite spinning device and process of the present invention, the elastic yarn (spandex) is fed into the holding roller pair of the overfeeding mechanism 2 in the above-mentioned manner, and then the overfeeding enters the pre-wrapped tube 1 and exits the pre-wrapped tube. The yarn outlet 12 of the winding tube is axially converged and twisted with the spun polyester-cotton staple fiber strands to form a yarn. The specific process parameters and measured data of the yarn are shown in the table. The physical and mechanical performance parameters of the spun (polyester / cotton staple fiber + stretch yarn) / high-strength polyester filament negative Poisson's ratio composite yarn are as follows. Among them, when stretching the composite yarn of the elastic core-spun yarn of polyester-...

Example Embodiment

[0065] Example 3: Spinning basalt spun yarn / carbon fiber filament composite yarn with negative Poisson's ratio

[0066] Using the above-mentioned over-feeding asymmetric biaxial composite spinning device of the present invention, the carbon fiber filament bundle is fed into the holding roller pair of the over-feeding mechanism 2 in the above-mentioned manner, and then the over-feeding enters the pre-wrapped tube 1 and exits the pre-wrapped tube. The yarn outlet 12 of the winding tube is axially converged and twisted with the spun basalt staple fiber strands to form a yarn. The specific process parameters and measured data of the yarn are shown in the table. The physical and mechanical performance parameters of the spun basalt staple fiber / carbon fiber filament negative Poisson's ratio composite yarn are as follows. Among them, when the basalt staple fiber / carbon fiber filament composite yarn is stretched, the margarite staple fiber strand changes from straightening to spiral wrap...

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Abstract

The invention provides a pre-wrapping-pipe-front-mounted composite negative-poisson's-ratio-yarn spinning device. The device comprises a pre-wrapping pipe for allowing a rigid filament to be in set feeding angle positioning, a yarn feeding device for stable overfeeding of the rigid filament and a buncher for accurate positioning and bundling of a short fiber strand, wherein stable wrapping is formed between the pre-wrapping pipe and the short fiber strand with the twisting degree. The pre-wrapping pipe and the yarn feeding device are installed on the output side of a front roller nip on a ring spinning frame, and the buncher is installed on the input side of the front roller nip on the ring spinning frame. The invention also provides a composite pre-wrapping-pipe negative-poisson's-ratio-yarn spinning method and application of the composite spinning device. The short fiber strand is output from the front roller nip to be twisted to be a high-twisting fiber strand; the rigid filament is fed through the yarn feeding device, and is wrapped through the pre-wrapping pipe and the high-twisting fiber strand in certain tension, and the negative poisson's ratio yarn is formed in the mode that the rigid filament is slightly embedded into the high-twisting fiber strand. The structure of the device is simple, the cost is low, operation is convenient, and the negative poisson's ratio yarn prepared with the method has the more obvious negative poisson ' s ratio effect.

Description

technical field [0001] The invention relates to a composite yarn capable of negative Poisson's ratio deformation and its composite spinning technology, which is an abnormal negative Poisson's ratio textile and a new technology for its preparation. Background technique [0002] Since the emergence of composite spinning in the late 1950s, it has provided more space and more choices for the improvement and functionalization of yarn structure and performance. But basically it is still limited to the material content of the multi-axis system and the efforts made on different spinning machines. Such as 2-axis to multi-axis in terms of material content to increase components, staple fiber / short fiber (S / S) composite spinning, staple fiber / filament (S / F) or filament / short fiber (F / S) composite Spinning to solve the requirements of spinnability, high efficiency, low cost and functionalization. Such as ring composite spinning, rotor composite spinning, hollow spindle wrapping and wr...

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): D02G3/38D01H13/04D01H5/72
Inventor 于伟东杜赵群周铭高倩刘赛
Owner DONGHUA UNIV
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