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Method of using air-jet vortex spinning for spinning polysulfonamide yarns

A kind of aramid fiber and yarn technology, which is applied in the spinning field of aramid sulfone fiber, and can solve the problems of high volume specific resistance, difficult spinning and processing, low friction coefficient, etc.

Inactive Publication Date: 2010-03-17
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of high volume specific resistance, poor crimp stability, and low friction coefficient, polysulfone fibers cause problems such as difficulty in spinning and more yarn hairiness.

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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Spinning 14.8tex sulfonamide yarn, the strands drawn by the rollers are sucked into the spiral spinneret at the front of the nozzle, the spiral surface and the guide needle together prevent twisting from being transferred to the front roller nip, so that the fiber strands are The parallel loose fiber bundles are delivered to the front end of the hollow spindle. The compressed air flow in the vortex chamber enters the nozzle through the four injection holes tangent to the inner wall of the nozzle through the rubber tube connected outside to form a vortex, and flows along the conical top of the spindle. The channel rotates and moves down. When the end of the fiber is out of the control of the helical curved surface at the front end of the nozzle and the guide needle, the rear end of the fiber bundle is affected by the high-speed vortex axial force, and the fibers of the strands are separated from each other, resulting in a large number of edge fibers. (free fiber at the he...

Embodiment 2

[0016] Spinning 17.4tex sulfonamide yarn, the strands drawn by the rollers are sucked into the spiral spinneret at the front of the nozzle, the spiral surface and the guide needle together prevent twisting from being transferred to the front roller nip, so that the fiber strands are The parallel loose fiber bundles are delivered to the front end of the hollow spindle. The compressed air flow in the vortex chamber enters the nozzle through the four injection holes tangent to the inner wall of the nozzle through the rubber tube connected outside to form a vortex, and flows along the conical top of the spindle. The channel rotates and moves down. When the end of the fiber is out of the control of the helical curved surface at the front end of the nozzle and the guide needle, the rear end of the fiber bundle is affected by the high-speed vortex axial force, and the fibers of the strands are separated from each other, resulting in a large number of edge fibers. (free fiber at the he...

Embodiment 3

[0020] Spinning 39.7tex sulfonamide yarn, the strands drawn by the rollers are sucked into the spiral spinneret at the front of the nozzle. The parallel loose fiber bundles are delivered to the front end of the hollow spindle. The compressed air flow in the vortex chamber enters the nozzle through the four injection holes tangent to the inner wall of the nozzle through the rubber tube connected outside to form a vortex, and flows along the conical top of the spindle. The channel rotates and moves down. When the end of the fiber is out of the control of the helical curved surface at the front end of the nozzle and the guide needle, the rear end of the fiber bundle is affected by the high-speed vortex axial force, and the fibers of the strands are separated from each other, resulting in a large number of edge fibers. (free fiber at the head end), so as to produce a free end, which is umbrella-shaped at the entrance of the hollow spindle, and the other end of the fiber is rooted i...

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 relates to a method of using air-jet vortex spinning for spinning polysulfonamide yarns, which comprises that air-jet vortex spinning is used, and the technical parameters are as follows: nozzle pressure P=0.42 to 0.68 MPa, spindle distance L=16 to 20mm and V=330 to 360m / min. The invention has simple operation and high production efficiency, and can improve yarn evenness and reduce yarn defects.

Description

technical field [0001] The invention belongs to the field of spinning polysulfone yarns, in particular to a method for spinning polysulfone yarns by air-jet vortex spinning. Background technique [0002] Aramid sulfone fiber is an organic high-temperature-resistant fiber with independent intellectual property rights developed by Shanghai Textile Research Institute and Shanghai Synthetic Fiber Research Institute for many years (application number: 200710037799.1). Aramid sulfone fiber belongs to the high temperature resistant material of aromatic polyamide, and its appearance has filled the blank of 250 ℃ grade synthetic fiber in our country. Aramid sulfone fiber has important uses in national defense and modern industry, and is an urgently needed high-tech fiber in our country. From the perspective of important strategic substances and core technologies of industrial new materials, it has been included in the national "Eleventh Five-Year Plan" key areas of science and techn...

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 Applications(China)
IPC IPC(8): D01H4/02D02G3/02
Inventor 薛文良魏孟媛程隆棣
Owner DONGHUA UNIV
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