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Preparation method of Polyethersulfone fibers

A technology of polyethersulfone fiber and polyethersulfone resin, which is applied in the field of preparation of polyethersulfone fiber, can solve problems such as increased cost and complicated equipment, and achieve the effects of saving time, simplifying the preparation process, and easy operation

Active Publication Date: 2013-05-08
BEIJING INSTITUTE OF CLOTHING TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The limitations of the above research on the preparation of polyethersulfone fibers by melt spinning are: twin-screw extruders or self-made plunger equipment are used instead of the most common single-screw extruders in spinning, and the equipment is complicated. Increased cost; After melt extrusion and winding to get the fiber, draw it after a period of equilibrium, instead of using a more efficient one-step method, that is, the polyethersulfone filament is directly drawn by a hot roller after cooling and solidification, and finally rolled FDY one-step method for winding finished yarn

Method used

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  • Preparation method of Polyethersulfone fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The polyethersulfone chips are vacuum-dried to a water content of <200ppm, and melted and extruded by a single-screw extruder. The temperature of each zone of the screw is: 305°C in the feed section, 317°C in the compression section, 322°C in the melting section, and 332°C in the metering section. After passing through the spinning assembly (spinning temperature is 345°C), it is cooled and solidified through the spinning tunnel under the condition of side blowing, and the oiled silk is directly introduced into the drafting and shaping winding machine, and is drawn on the upper and lower hot rollers. Shaping, wherein the temperature of the upper hot roller is 96°C, the speed is 445m / min, the temperature of the lower hot roller is 135°C, the speed is 848m / min, the draft ratio is 1.9 times, and the coiling speed of the winder is 830m / min.

[0030] The finally obtained polyethersulfone fiber has a monofilament fineness of 7.2 dtex, a breaking strength of 2.2 CN / dtex, and a ...

Embodiment 2

[0032]The polyethersulfone chips are vacuum-dried to a water content of <200ppm, and melted and extruded by a single-screw extruder. The temperature of each zone of the screw is: 320°C in the feed section, 330°C in the compression section, 332°C in the melting section, and 343°C in the metering section. After passing through the spinning assembly (spinning temperature is 345°C), it is cooled and solidified through the spinning tunnel under the condition of side blowing, and the oiled silk is directly introduced into the drafting and shaping winding machine, and is drawn on the upper and lower hot rollers. Shaping, wherein the temperature of the upper hot roller is 110°C, the speed is 556m / min, the temperature of the lower hot roller is 128°C, the speed is 1334m / min, the draft ratio is 2.4 times, and the coiling speed of the winder is 1300m / min.

[0033] The finally obtained polyethersulfone fiber has a monofilament fineness of 6.5 dtex, a breaking strength of 3.0 CN / dtex, and ...

Embodiment 3

[0035] The polyethersulfone chips are vacuum-dried to a water content of <200ppm, and melted and extruded by a single-screw extruder. The temperature of each zone of the screw is: 335°C in the feed section, 360°C in the compression section, 370°C in the melting section, and 380°C in the metering section. After passing through the spinning assembly (spinning temperature is 345°C), it is cooled and solidified through the spinning tunnel under the condition of side blowing, and the oiled silk is directly introduced into the drafting and shaping winding machine, and is drawn on the upper and lower hot rollers. Shaping, wherein the temperature of the upper hot roller is 125°C, the speed is 1055m / min, the temperature of the lower hot roller is 147°C, the speed is 1947m / min, the draw ratio is 1.8 times, and the coiling speed of the winder is 1900m / min.

[0036] The finally obtained polyethersulfone fiber has a monofilament fineness of 12.0 dtex, a breaking strength of 1.6 CN / dtex, an...

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Abstract

The invention provides a preparation method of Polyethersulfone fibers, and relates to the field of resin spinning. The preparation method includes the following steps: heating and melting Polyethersulfone resin of which moisture content meets spinning requirement by a single screw extruder, flowing out at a trickle type through a spinning components, after being cool and solidified, directly feeding the drafting setting winding machine; being heated and drafting by hot rollers and finally obtaining the Polyethersulfone fibers through winding. A temperature of a feeding stage of the single screw extruder is 300-400 DEG C, a temperature of a compressing stage and a melting stage is 310-380 DEG C, a temperature of a measuring stage is 320-390 DEG C. temperature values between two drafting hot roller of the drafting setting winding machine are increased from 10 DEG C to 40 DEG C.A temperature of an upper hot roller is lower than a temperature of an lower hot roller; the temperature of the upper hot roller is 90-130 DEG C and the temperature of the lower hot roller is 110-150 DEG C. By the preparation method, process is simplified and time is saved. The preparation method is further close to practical working and adaptable to popularization.

Description

technical field [0001] The present invention relates to a preparation method of fiber material, more specifically, relates to a preparation method of polyethersulfone fiber. Background technique [0002] Polyethersulfone resin is a kind of thermoplastic polymer with excellent comprehensive properties. It is one of the few special engineering plastics currently used. It is characterized by excellent performance at high temperature. The repeating group in the molecule is shown in the figure below: [0003] [0004] Polyethersulfone was first discovered by Union Carbide in 1965. Polyethersulfone resin was developed by British ICI Company in 1972. However, due to its expensive raw material and processing costs, it is generally used as a special engineering plastic, and its performance at room temperature is similar. Polycarbonate has been widely used in many fields. [0005] The excellent properties of polyethersulfone resin include: [0006] Heat resistance: Among all mel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/12D01D1/04
Inventor 许志强张天骄王灏王勇杨春喜高扬袁平王春梅刘建兵李睿王玥焦红娟
Owner BEIJING INSTITUTE OF CLOTHING TECHNOLOGY
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