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Core shift bicomponent composite fiber and method of preparing the same

A composite fiber and two-component technology, applied in fiber processing, conjugated synthetic polymer artificial filament, filament/thread forming, etc., can solve the problems of fabric bulkiness and insufficient long-term usability, and achieve excellent long-term Effective three-dimensional curling performance, cost reduction, and extended service life

Inactive Publication Date: 2008-01-23
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the fiber of composite spinning PPS can overcome the problem of high price, the performance, especially the bulkiness and long-term usability of the fabric are still not enough

Method used

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  • Core shift bicomponent composite fiber and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Drying of raw materials: PPS slices are screened and then sent to a vacuum drum for airtight vacuuming and heating. The temperature was raised to 150° C. for 8 hours and kept for 10 hours. After cooling, the discharged material is transported to the A# spinning material storage barrel. PET slices, intrinsic viscosity 0.68, heating time in the vacuum drum for 6 hours to 130°C, keeping warm at this temperature for 6 hours, and transporting to B# spinning material storage barrel after cooling. A# spinning screw temperature: 85°C in cooling zone, 295°C in feeding zone, 315°C in melting zone, 325°C in metering compression zone, and 315°C in elbow flange zone.

[0036] B# spinning screw temperature: cooling zone 70°C, feeding zone 275°C, melting zone 290°C, metering compression zone 300°C, elbow flange zone 285°C, composite spinning box 310°C, ring blowing plate distance 25cm, Wind speed 0.42m / min, wind temperature 28°C, unit suction air volume 70mm / H 2 O, spinning speed 7...

Embodiment 2

[0038] The spinning conditions are the same as in Example 1, except that the ratio of the skin-core component is 30 / 70 by adjusting the metering pump, and the opening arc is 15°. The fiber properties and cross-section are shown in Table 1.

Embodiment 3

[0040] The spinning conditions are the same as in Example 1, except that the ratio of the sheath-core component is 70 / 30 by adjusting the metering pump, and the opening arc is 45°. The fiber properties and cross-section are shown in Table 1.

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Abstract

The invention relates to a core-shift double-component compound fiber and the preparing method for the fiber. The compound fiber comprises long or short fiber spun from a core-shift and skin-core structure taking PPS (Poly Phenylene Sulfide) as the covering layer and PET (polyester), PBT, PA6 (polyamide) or PB66 (polyamide) as core layer; the preparing includes (1) vacuum drying, (2) double-component spinning and winding, (3) after tensioning and thermal shaping. The compound fiber is of excellent bulkiness and usability for long term, and low cost; can be used widely in the environmental protection field after being made into fiber filtering material.

Description

technical field [0001] The invention belongs to the technical field of chemical fiber preparation, and in particular relates to an eccentric two-component composite fiber and a preparation method thereof. Background technique [0002] The main synthetic fibers in the existing high-temperature-resistant filter materials for pollution control are: [0003] Use general PET (polyester) or PA66 (polyamide) or sulfonamide fibers to make non-woven needle felting. Its defect is that it cannot be applied to the comprehensive needs of high temperature, high humidity, complex and changeable pollution control for a long time. [0004] Fibers spun by single-component PPS (polyphenylene sulfide), such as the Chinese patent entitled "A Method for Melting Spinning and Stretching Heat Setting of Linear Polyphenylene Sulfide Fibers": 200410096068.D. Its defect is that, due to the high price, it is difficult to be widely used in the environmental protection industry. [0005] Patent Applica...

Claims

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Application Information

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IPC IPC(8): D01D5/34D01F8/14D01F8/12
Inventor 王依民崔晓玲倪建华潘湘庆王燕萍
Owner DONGHUA UNIV
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