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Preparation method of ultrahigh molecular weight polyethylene fiber having super coarse denier silk, and ultrahigh molecular weight polyethylene fiber produced therethrough

A technology of ultra-high molecular weight and polyethylene fiber, which is applied in the direction of dry spinning and single-component polyolefin rayon, can solve the problem that the output cannot meet the market demand, and achieve the purpose of increasing denier, reducing production cost, and reducing Effect of Extraction Temperature

Inactive Publication Date: 2018-03-30
JIULI ROPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the maximum production capacity of a single machine of conventional manufacturers is about 300 tons per year, which is far from meeting the demand of the market.

Method used

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  • Preparation method of ultrahigh molecular weight polyethylene fiber having super coarse denier silk, and ultrahigh molecular weight polyethylene fiber produced therethrough

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] figure 1 A flow chart of a method for preparing an ultra-high molecular weight polyethylene fiber with ultra-coarse denier filaments provided in an embodiment of the present invention is shown. see figure 1 , the preparation method of the ultra-high molecular weight polyethylene fiber with ultra-thick denier silk according to the embodiment of the present invention comprises the following steps:

[0028] Step 1, select ultra-high molecular weight polyethylene powder, add solvent oil to it, and obtain spinning stock solution;

[0029] Step 2, sending the spinning dope into a twin-screw extruder for blending and extrusion to obtain a spinning solution;

[0030] Step 3, feeding the spinning solution into the spinning box, and extruding it through a spinneret through a metering pump to obtain gelled pre-oriented filaments;

[0031] Step 4, carrying out equilibrium static treatment on the gelatinized pre-oriented yarn;

[0032] Step 5. Pre-drawing, extracting, drying, an...

Embodiment 1

[0048] 1. Select ultra-high molecular weight polyethylene powder with a weight-average molecular weight of 5 million, add No. 68 white oil to it, wherein the mass ratio of No. 68 white oil and ultra-high molecular weight polyethylene powder is 1:4, to obtain spinning. silk stock solution;

[0049] 2. The spinning stock solution is sent to a twin-screw extruder for blending and extrusion to obtain a spinning solution;

[0050] 3. The spinning solution is fed into the spinning box, and extruded through a spinneret through a metering pump to obtain gelled pre-oriented filaments;

[0051] 4. The gelation pre-oriented yarn is subjected to a water bath cooling equilibrium treatment;

[0052] 5. Pre-drawing, extracting, drying, and tertiary drawing are performed on the gelatinized pre-oriented yarn after the static treatment in sequence, wherein the extraction adopts microwave-assisted extraction, and the drying air volume is 30,000 m 3 / h, the third-stage drafting temperature is 1...

Embodiment 2

[0054] 1. Select ultra-high molecular weight polyethylene powder with a weight-average molecular weight of 4.5 million, add No. 64 white oil to it, wherein the mass ratio of No. 64 white oil and ultra-high molecular weight polyethylene powder is 1:5 to obtain spinning. silk stock solution;

[0055] 2. The spinning stock solution is sent to a twin-screw extruder for blending and extrusion to obtain a spinning solution;

[0056] 3. The spinning solution is fed into the spinning box, and extruded through a spinneret through a metering pump to obtain gelled pre-oriented filaments;

[0057] 4. The gelation pre-oriented yarn is subjected to a water bath cooling equilibrium treatment;

[0058] 5. Pre-drawing, extracting, drying, and tertiary drawing are performed on the gelatinized pre-oriented yarn after the static treatment in sequence, wherein the extraction adopts microwave-assisted extraction, and the drying air volume is 29000 m 3 / h, the third-stage drafting temperature was ...

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Abstract

The invention belongs to the technical field of fiber preparation, and provides a preparation method of an ultrahigh molecular weight polyethylene fiber having super coarse denier silk, and the ultrahigh molecular weight polyethylene fiber produced therethrough. The preparation method comprises the following steps: selecting ultrahigh molecular weight polyethylene powder, and adding solvent oil into the powder; sending the obtained mixture into a double screw extruder, and performing blend extrusion; sending the extruded mixture into a spinning box body, and allowing the mixture to go througha metering pump and to be extruded through a spinneret; performing balancing standing treatment; and performing pre-drafting in a three-level drafting manner, performing extraction in a microwave assisted extraction manner, and performing drying in a bottom air indraft and bottom and side surface blowing drying manner. The ultrahigh molecular weight polyethylene fiber is prepared through the preparation method Microwave assisted extraction is adopted to substitute traditional ultrasonic extraction, so the extraction rate is improved several times, the extraction temperature is reduced, and thequality of extract is maximally guaranteed, thereby the denier of the single silks is increased, the productivity per machine is further increased, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of fiber preparation, in particular to a preparation method of ultra-high molecular weight polyethylene fibers with ultra-coarse denier and the prepared ultra-high molecular weight polyethylene fibers. Background technique [0002] Ultra-high molecular weight polyethylene fiber is a scarce material in the world, and the gap is large. Experts predict that the annual market demand for UHMWPE fiber will exceed 100,000 tons in the next 10 years, with huge market potential and broad prospects. [0003] In the late 1970s, the Dutch company DSM succeeded in spinning ultra-high molecular weight polyethylene fibers by gel spinning. [0004] The high-end market for UHMWPE fibers is rope and net manufacturing, followed by bulletproof sheets (UD). my country's UHMWPE fibers are mainly used in the manufacture of stab-resistant clothing, bulletproof vests, bulletproof helmets, ropes, ocean fishing nets, fishing lines, labor prote...

Claims

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Application Information

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IPC IPC(8): D01F6/04D01F1/10D01D5/04
Inventor 王捧柱王依民纪俊祥夏于旻陈玉伟刘向阳闫寿科郑谦
Owner JIULI ROPE
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