Polysulphonamide fiber cable type spinning method

A technology of polysulfone fiber and cable type, which is applied in the field of spinning, can solve the problems of small cohesion between fibers, long hairiness, low yarn strength, etc., and achieve small elongation at break, small number of hairiness, and single yarn strength high effect

Inactive Publication Date: 2010-06-16
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high volume specific resistance and initial modulus, low friction coefficient and crimp stability of sulfone fibers are not good for spinning, weaving, dyeing and other processing of fibers.
In the spinning process us

Method used

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  • Polysulphonamide fiber cable type spinning method
  • Polysulphonamide fiber cable type spinning method
  • Polysulphonamide fiber cable type spinning method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Single yarn strength test and analysis:

[0024] Spun sulfonamide single yarn on FB505 spinning frame, 10 spindles adopt traditional spinning without cable spinning device; 10 spindles add cable spinning device, first spin 19.8 inch, twist 500 twist / m For spun yarn, adjust the spinning twist of the spinning machine after spinning a few winding yarns; other process parameters remain unchanged, spinning 19.8 inches of spun yarn with a twist of 450 twists / m, after spinning, from the spun Randomly select 10 bobbins of various spun yarns from the spun yarn, a total of 40 to test the single yarn strength and elongation at break. Each bobbin is tested 5 times, the test distance is 250mm, the tensile speed is 300 m / min, and the test single The results of yarn strength and elongation at break are shown in Table 1 and Table 2.

[0025] Table 1 Comparison of yarn strength between cable spinning and traditional spinning

[0026]

[0027] Table 2 Comparison of yarn elongation b...

Embodiment 2

[0035] Comparison of yarn hairiness between cable spinning and traditional spinning:

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PUM

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Abstract

The invention belongs to spinning technologies and relates to a polysulphonamide fiber cable type spinning method. Polysulphonamide fiber has high volume specific resistance, high initial modulus, low friction factor and low crimp stability, thereby being unfavorable to spinning, weaving, dyeing and the like of the fiber, and the adoption of the traditional spinning technology has the disadvantages of difficult yarn formation, high yarn hairiness and influence on yarn quality. The polysulphonamide fiber cable type spinning method comprises the following steps: using a separating roller for separating a strand into more than two shares of fiber bundles when being discharged from a front jaw of a spinning frame; leading the fiber bundles after separation to enter into a separating slot under the action of spinning tension; leading the fiber bundles in the separating slot to rotate around the twisting center under the action of spinning twisting force; and leading the fiber bundles with a certain twist to move downwards along with the winding of a yarn, and leading all the fiber bundles to converge at one point and carry out the rotary motion around the twisting center of the whole yarn, thereby forming a cable type spun yarn. The polysulphonamide fiber cable type spinning method has the advantages that the polysulphonamide fiber cable type spun single yarn has low hairiness and high single yarn strength; and the elongation at break of the single yarn is small.

Description

technical field [0001] The invention belongs to the spinning technology, in particular to a cable-type spinning method of sulfonamide fibers. Background technique [0002] Polysulfonamide (PSA) fiber is polyterephthaloyl-3,3',4,4'-diaminodiphenylsulfone copolymer fiber, also known as polyarylsulfonamide fiber. TANLON), the molecular structure is an amide group (one CONH one), a sulfone group (one SO: one), and a benzene ring bonded together, and the molecular structure formula is: [0003] [0004] There are both para and meta structures in the macromolecular chain structure, the molecular skeleton structure is stable and regular, and the fiber has a high degree of crystallinity and orientation. The X-ray small-angle diffraction test shows that it has a good degree of orientation and a crystallinity of 14% to 18%. The molecular characteristics of sulfonamide fiber make it have excellent chemical stability, thermal stability, high modulus and low electrical conductivity....

Claims

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Application Information

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IPC IPC(8): D02G3/28
Inventor 何文元
Owner SHANGHAI UNIV OF ENG SCI
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