Method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers

A polyphenylene sulfide and three-dimensional crimping technology is applied in the preparation of hollow polyphenylene sulfide short fibers and the preparation of hollow three-dimensional crimped polyphenylene sulfide short fibers, and achieves the effects of superior performance, good operating performance and high hollow ratio.

Inactive Publication Date: 2011-08-24
ZHEJIANG SCI-TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PPS resin has completely different melting characteristics and processing properties from PET resin. It is difficult to obtain PPS hollow three-dimensional cr

Method used

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  • Method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers
  • Method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers
  • Method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers

Examples

Experimental program
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Example Embodiment

[0015] Example 1

[0016] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 100g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 120g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap between the gaps a is 0.10mm, and the included angle θ of the circula...

Example Embodiment

[0017] Example 2

[0018] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 100g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 150g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap between the gaps a is 0.10mm, and the included angle θ of the circula...

Example Embodiment

[0019] Example 3

[0020] The preparation method of a hollow three-dimensional crimped polyphenylene sulfide staple fiber of this embodiment adopts two components, wherein the first component is linear polyphenylene sulfide with a melt index of 50g / 10min, and the second component is Linear polyphenylene sulfide with a melt index of 60g / 10min; the two components pass through a twin-screw compound spinning device after drying at 180°C for 8 hours. The temperature of each zone of the twin-screw compound spinning device is set to 280 ~320℃, after melting, it will be sent into the spinning box by metering pump, and melt spinning at 325℃; figure 1 As shown, the spinneret hole of the spinneret 1 of the present invention is a ring composed of two concentric circles, and there are two gaps on the ring; the radius r of the inner ring 3 of the spinneret hole is 0.3mm, and the outer ring 2 The radius R is 0.8mm, the gap distance a is 0.10mm, the included angle θ of the circular arc on one s...

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Abstract

The invention discloses a method for preparing hollow three-dimensional crimped polyphenylene sulfide staple fibers. Two components are adopted in the method, the melt index of linear polyphenylene sulfide is 50 to 150g/10min, and the melt index difference of the first component and the second component is 10 to 50g/10min; melt spinning is performed at the temperature of between 300 and 350 DEG C; the spinneret hole of a spinneret plate is a ring consisting of two concentric circles, and the ring is provided with two gaps; the annular blowing cooling air velocity of an annular blowing cylinder is 0.8 to 1.5m/s, and the blowing angle of the upper part of the annular blowing cylinder is horizontal downward 10 to 20 degrees; and the spinning speed is 800 to 1,000m/min, and the hollow polyphenylene sulfide staple fibers are prepared by 2 to 5 times of drafting, cutting and high-temperature heat setting of 180 to 220 DEG C. The polyphenylene sulfide staple fibers have the characteristics of good operability, excellent mechanical property, high hollow ratio and the like, and are particularly suitable for high-temperature resistant protective clothing, heat insulation non-woven fabrics and the like.

Description

technical field [0001] The invention relates to a method for preparing hollow polyphenylene sulfide short fibers, in particular to a method for preparing hollow three-dimensional crimped polyphenylene sulfide short fibers, and belongs to the technical field of high-performance fibers. Background technique [0002] Polyphenylene sulfide (PPS) resin is a thermoplastic resin with phenylthio groups in the molecular main chain. PPS fiber made of PPS resin is a new type of high-performance fiber with excellent heat resistance, chemical resistance, Flame retardant properties and good mechanical properties, dimensional stability and textile processability. Therefore, PPS fiber has been widely used in industry and textile and garment fields. [0003] The currently developed PPS fibers are mainly ordinary round short fibers. As disclosed in the publication number CN1603477, it is "a method for melt spinning and stretching heat setting of linear high molecular weight polyphenylene sul...

Claims

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Application Information

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IPC IPC(8): D01F8/16D01D5/092D01D5/30D01D5/24
Inventor 王秀华沈国锋詹勇万继宪马艳丽
Owner ZHEJIANG SCI-TECH UNIV
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