Method for producing blended yarns containing flame-retardant viscose fibers and polyarylester fibers

A technology of flame-retardant viscose fiber and polyarylate fiber, which is applied in the direction of yarn, textiles and papermaking, etc. It can solve the problems of unsustainable flame-retardant effect, poor wearing comfort, and poor mechanical stability, so as to increase damage and reduce damage , The effect of increased raw material loss

Inactive Publication Date: 2019-07-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the disadvantages of poor wearing comfort, low strength, poor mechanical stability, and unsustainable flame-retardant effect in the flame-retardant textiles prepared from flame-retardant viscose in the prior art, and to provide a Production method of blended yarn containing flame-retardant viscose fiber and polyarylate fiber

Method used

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  • Method for producing blended yarns containing flame-retardant viscose fibers and polyarylester fibers
  • Method for producing blended yarns containing flame-retardant viscose fibers and polyarylester fibers
  • Method for producing blended yarns containing flame-retardant viscose fibers and polyarylester fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0084] A production method of a blended yarn containing flame-retardant viscose fiber and polyarylate fiber, respectively using cooked slivers of flame-retardant viscose fiber and cooked slivers of polyarylate fiber as the surface layer and the core layer for friction spinning to prepare the blended yarn ;

[0085] Among the raw materials used for spinning, the mass content of flame-retardant viscose fiber and polyarylate fiber is 55wt% and 45wt% respectively; the breaking strength of flame-retardant viscose fiber is 1.5cN / dtex, and the average length is 38mm; polyarylate The breaking strength of the fiber is 12cN / dtex, and the average length is 38mm;

[0086] Flame-retardant viscose fiber cooked sliver is made from flame-retardant viscose fiber through pretreatment process, blowing carding process and second drawing frame process;

[0087] In the cleaning and carding process, the beater speed of the catching machine is 860r / min, the beater speed of the cotton blender is 576m...

Embodiment 2

[0102] A production method of a blended yarn containing flame-retardant viscose fiber and polyarylate fiber, respectively using cooked slivers of flame-retardant viscose fiber and cooked slivers of polyarylate fiber as the surface layer and the core layer for friction spinning to prepare the blended yarn ;

[0103] Among the raw materials used for spinning, the mass content of flame-retardant viscose fiber and polyarylate fiber is 60wt% and 40wt% respectively; the breaking strength of flame-retardant viscose fiber is 1.6cN / dtex, and the average length is 39mm; polyarylate The breaking strength of the fiber is 28cN / dtex, and the average length is 40mm;

[0104] Flame-retardant viscose fiber cooked sliver is made from flame-retardant viscose fiber through pretreatment process, blowing carding process and second drawing frame process;

[0105] In the cleaning and carding process, the beater speed of the catching machine is 880r / min, the beater speed of the cotton blender is 672m...

Embodiment 3

[0115] A production method of a blended yarn containing flame-retardant viscose fiber and polyarylate fiber, basically the same as in Example 2, the difference is that in the blowing-carding process corresponding to flame-retardant viscose fiber, the speed of the hand of the catching machine is is 920r / min, the beating speed of the cotton blender is 576m / min, the cotton output roller speed is 0.230m / min, the drum speed of the single-roller cleaning machine is 475r / min, and the cylinder speed of the carding machine is 595r / min , in the second drawing process corresponding to the flame-retardant viscose fiber, in the first drawing, use 6 slivers to mix, the speed is 218m / min, the total draft ratio is 6.2, and the draft ratio in the rear area is 1.35 times; When doubling, use 8 slivers to mix, the speed is 215m / min, the total draft ratio is 8.7 times, and the draft ratio in the rear area is 1.65 times.

[0116] The smoldering time of the final blended yarn is 0s, the afterburning...

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Abstract

The invention relates to a method for producing blended yarns containing flame-retardant viscose fibers and polyarylester fibers. Flame-retardant viscose fiber drawn slivers and polyarylester fiber drawn slivers serve as a surface layer and a core layer respectively to prepare a blended yarn through friction spinning. The flame-retardant viscose fiber drawn slivers are prepared from flame-retardant viscose fibers by a pretreatment process, a blowing-carding process and a twice slivering process; the polyarylester fiber drawn slivers are prepared from polyarylester fibers by a pretreatment process, a blowing-carding process, a combing process and a twice slivering process; in the combing process, the length of a cylinder carding dead zone is 0-3mm greater than the average length of hook portions of the polyarylester fibers. The method is simple in process and short in procedure; by blending of the flame-retardant viscose fibers and the polyarylester fibers and control of the length of the cylinder carding dead zone in the combing process, fiber damages are reduced while combing effects are guaranteed, quality of the blended yarns is improved, and the finally prepared blended yarns are excellent in mechanical property, high in breaking strength, great in flame retardation and high in comfort.

Description

technical field [0001] The invention belongs to the technical field of blended yarns, and relates to a production method of blended yarns containing flame-retardant viscose fibers and polyarylate fibers. Background technique [0002] Polyarylate fiber is called aromatic polyester fiber, which is a new type of special fiber with higher physical and mechanical properties than aramid fiber. Polyarylate fiber has excellent mechanical properties, the modulus of the fiber itself is high, the breaking strength of the short fiber is greater than 9cN / dtex, and the breaking strength of the fiber after anaerobic high-temperature heat treatment can reach 25-28cN / dtex. The mechanical properties at 250°C are even better than those of PPS fibers at room temperature. A large number of large π bonds and high crystallinity have good heat resistance and droplet resistance. The fiber itself has excellent flame retardancy and droplet resistance, which can effectively prevent burns caused by fib...

Claims

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Application Information

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IPC IPC(8): D02G3/04D02G3/36D02G3/44
CPCD02G3/04D02G3/36D02G3/443D10B2201/24D10B2331/042
Inventor 杨建平郁崇文钱希茜王依民倪建华赵天奇
Owner DONGHUA UNIV
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