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Polyetheretherketone hollow fiber preparation method

A polyetheretherketone and polyetheretherketone resin technology is applied in the field of preparation of polyetheretherketone hollow fibers, which can solve the problem that the uniformity of hollowness of hollow fibers cannot be completely guaranteed, and the consistency of hollow fibers cannot be fully guaranteed. It can completely guarantee and easily destroy the hollow shape of the hollow fiber, and achieve the effect of reducing surface defects, good uniformity and wear resistance, and perfect crystallization.

Active Publication Date: 2017-04-26
SINO HIGH CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 1. The cooling method adopts single-sided side blowing, outer ring blowing and internal air hole blowing, the speed is slow, and the equipment is complicated and expensive;
[0007] 2. The traction method is easy to damage the hollow shape of the hollow fiber during the traction process, which affects the quality of the final hollow fiber;
[0008] 3. The uniformity of the hollowness and the consistency of the hollow outer diameter of the prepared hollow fiber cannot be fully guaranteed;
[0009] 4. The consistency between the actual fiber number of the prepared hollow fiber and the number of spinneret holes cannot be fully guaranteed

Method used

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  • Polyetheretherketone hollow fiber preparation method

Examples

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preparation example Construction

[0046] Such as Figure 1-3 Shown, a kind of preparation method of polyether ether ketone hollow fiber, the steps are as follows:

[0047] Step 1. Dry the special material for spinning grade polyetheretherketone resin. The drying temperature is 100-160°C and the time is 2-12 hours. After drying, add it to extruder 1. Melt in the temperature range of 280-430°C to obtain a melt, which is transported to the metering pump box 3 through the melt pipeline 2, and the metering pump 31 in the metering pump box 3 is accurately metered and output to the spinning machine under constant pressure conditions. The amount of melt in the component 4, and the melt is sent to the spinning component 4, the melt is in the spinning component 4, first filtered through the filter system, and then spun through the hollow spinneret 5 to obtain the polyether ether ketone hollow fiber Melt strips.

[0048] In step one, the special material for spinning grade polyether ether ketone resin is the prior art ...

Embodiment 1

[0064] Step 1. Dry the spinning-grade polyether ether ketone resin special material (99wt% PEEK pure resin and 1wt% high-temperature lubricant). The drying temperature is 160°C and the time is 5h. In the machine 1, the melt is obtained, and the melt is transported to the metering pump box 3 through the melt pipeline 2, and the metering pump 31 in the metering pump box 3 (gear metering pump, its working temperature can reach 500 ℃, and the nominal output The amount is 0.6cc / r,) the melt is output to the spinning assembly 4 at an output speed of 14r / min under 10MPa, and the heating temperatures from the feed port of the extruder 1 to the front of the metering pump 31 are 280°C, 340°C, and 380°C respectively. ℃, 390°C, 393°C, the pressure of the spinning assembly is 13-15MPa, and the temperature is 403°C. The melt is in the spinning assembly 4, and it is first filtered through the filter system (60-500 mesh multi-layer stainless steel mesh and 20- 200 mesh quartz sand particles),...

Embodiment 2

[0070] The output speed of the metering pump 31 is 18r / min, the specification of the hollow spinneret 5 is 12 holes, D1 is 0.8mm, D2 is 0.5mm, d1 is 0.15mm, and the pressure of the spinning assembly 4 is 16-19MPa. Cold system, the winding speed of the first winding device 9 is 10m / min, the temperature of the godet hot roller 13 is 130°C, the temperature of the first heating slit 14 is 180°C, and the temperature of the first drafting hot roller 15 is 180°C, the temperature of the second heating slit 16 is 230°C, the temperature of the second drafting hot roller 17 is 180°C, the temperature of the shaping hot roller 18 is 180°C, the draw ratio is 3.2, and the relaxation setting ratio is 0.95 : 1, other conditions are all identical with embodiment 1.

[0071] After testing, the diameter of the obtained polyether ether ketone hollow fiber is 0.188mm, the hollow rate is 52.34%, the linear density is 203.64dtex, and the fiber strength is 4.12cN / dtex. The picture of the scanning elec...

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Abstract

The invention relates to a polyetheretherketone hollow fiber preparation method and belongs to the technical field of organic fiber preparation. The problem that polyetheretherketone fibers prepared by a hollow fiber preparation method in the prior art is mainly to be solved. The polyetheretherketone hollow fiber preparation method includes subjecting special spinning-class polyetheretherketone to melt extrusion by a screw in an extruder, using a melt dosing pump for controlling the discharge amount, filtering melts through a filtering system of a component, and forming polyetheretherketone hollow fiber strips through a hollow spinneret plate; drafting the polyetheretherketone hollow fiber strips, cooling according to different cooling modes, and using a winding device for collecting as-spun fibers; guiding the as-spun fibers into a hot-drawing sizing device so as to obtain polyetheretherketone hollow fibers. The polyetheretherketone hollow fiber preparation method is simple, convenient and high in universality. The polyetheretherketone hollow fibers prepared by the preparation method have the advantages of high quality stability, high strength, high tenacity, high uniformity, excellent wear resistance and the like, and can be used for wear-resisting fabrics, thermal protection, lightweight materials and the like, thereby being quite promising in application prospect.

Description

technical field [0001] The invention belongs to the technical field of organic fiber preparation, and in particular relates to a preparation method of polyetheretherketone hollow fiber. Background technique [0002] Polyetheretherketone (PEEK) is a semi-crystalline aromatic thermoplastic resin with excellent comprehensive properties, such as high heat resistance, high chemical resistance, high radiation resistance, high impact strength and good wear resistance , good fatigue resistance, etc., can replace traditional materials such as metals and ceramics in many fields, and has a very wide range of applications. When used in different fields, the required polyether ether ketone products are different. Among them, polyether ether ketone fiber products have a very important demand in many fields, such as conveyor belts used in the paper industry, fuel filter screens for aviation aircraft and automobiles, woven mesh, and medical equipment. With the continuous advancement of te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/08D01D5/16D01D5/24D01D10/00D01D10/02D01F6/66D01F6/94
CPCD01D5/08D01D5/16D01D5/24D01D10/00D01D10/02D01F6/665D01F6/94
Inventor 王贵宾李永刚栾加双张淑玲张梅张梦晗盖须召许治平
Owner SINO HIGH CHINA
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