Ultra-high molecular weight polyethylene fiber and preparation method thereof

An ultra-high molecular weight, polyethylene fiber technology, applied in the chemical post-treatment of synthetic polymer rayon filaments, textiles and papermaking, etc., can solve the problems of affecting the mechanical properties of fibers, poor spinnability of polyethylene fibers, etc. Convenience, simple process effect

Active Publication Date: 2016-03-30
HUNAN ZHONGTAI SPECIAL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of inorganic nanoparticles will make the spinnability of ultra-high molecular weight polyethylene fibers worse, thereby affecting the mechanical properties of the fibers.

Method used

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  • Ultra-high molecular weight polyethylene fiber and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0023] With acetone as a solvent, triallyl cyanurate is dissolved in acetone to prepare an acetone solution with a mass concentration of triallyl cyanurate of 2%. The ultra-high molecular weight polyethylene as-spun fibers after solvent extraction were placed in the acetone solution and immersed for 20 minutes, and the mass ratio of the acetone solution to the ultra-high-molecular-weight polyethylene as-spun fibers was 5:1.

[0024] The as-spun silk was taken out from the acetone solution, dried naturally in the air, and then subjected to four-stage thermal drawing in hot air at 70°C, 100°C, 120°C and 140°C, with a total draw ratio of 15 times.

[0025] Under the protection of nitrogen, the drawn fibers were irradiated by an electron beam device with a dose rate of 5 kGy / s, and the irradiation dose was 10 kGy, to obtain irradiated cross-linked ultra-high molecular weight polyethylene fibers.

Embodiment 2

[0027] With tetrahydrofuran as a solvent, triallyl isocyanurate is dissolved in tetrahydrofuran to prepare a tetrahydrofuran solution with a mass concentration of triallyl isocyanurate of 4%. The ultra-high molecular weight polyethylene as-spun fibers after solvent extraction were placed in the tetrahydrofuran solution and immersed for 30 minutes. The mass ratio of the tetrahydrofuran solution to the ultra-high-molecular-weight polyethylene as-spun fibers was 10:1.

[0028] The as-spun silk was taken out from the tetrahydrofuran solution, dried naturally in the air, and then subjected to four-stage thermal drawing in hot air at 90°C, 110°C and 140°C, with a total draw ratio of 20 times.

[0029] Under the protection of acetylene, the stretched fibers were irradiated by an electron beam device with a dose rate of 5 kGy / s, and the radiation dose was 20 kGy, to obtain irradiated cross-linked ultra-high molecular weight polyethylene fibers.

Embodiment 3

[0031] Using ethanol as a solvent, 1,6-hexanediol diacrylate was dissolved in ethanol to prepare an ethanol solution with a mass concentration of 1,6-hexanediol diacrylate of 6%. The ultra-high molecular weight polyethylene as-spun fibers after solvent extraction were placed in the ethanol solution, and immersed for 30 minutes, and the mass ratio of the ethanol solution to the ultra-high-molecular-weight polyethylene as-spun fibers was 20:1.

[0032] The as-spun silk was taken out from the ethanol solution, dried naturally in the air, and then subjected to five-stage thermal drawing in hot air at 90°C, 110°C, 120°C, 130°C and 140°C, with a total draw ratio of 24 times.

[0033] The drawn fiber was irradiated by an electron beam device with a dose rate of 10kGy / s under vacuum, and the irradiation dose was 40kGy, to obtain an ultra-high molecular weight polyethylene fiber crosslinked by irradiation.

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Abstract

The invention discloses an ultra-high molecular weight polyethylene fiber and a preparation method thereof. The preparation method comprises steps as follows: an ultra-high molecular weight polyethylene spun filament after solvent extraction is put in a modified solution containing a radiation-sensitive cross-linking agent for impregnation treatment; the spun filament after impregnation is dried and subjected to multi-stage hot air drafting; high-energy rays are adopted to radiate the fiber after drafting, and accordingly, the ultra-high molecular weight polyethylene fiber subjected to radiation-crosslinking is obtained. According to the preparation method of the ultra-high molecular weight polyethylene fiber, the radiation-sensitive cross-linking agent is introduced into the ultra-high molecular weight polyethylene spun filament after solvent extraction, the radiation-sensitive cross-linking agent enters the fiber easily and inlaid between fiber macromolecules in the drafting process, and ultra-high molecular weight polyethylene fiber cross-linking is triggered through radiation of the high-energy rays, so that the process is simple, the operation is convenient, and the prepared ultra-high molecular weight polyethylene fiber has performance of high strength and low creep.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an ultra-high molecular weight polyethylene fiber and a preparation method thereof. Background technique [0002] UHMWPE fiber, whose density is lower than that of water, is currently the only high-performance fiber that can float on water, and has excellent mechanical properties. Its main chain has a good structure and high specific strength. Under the same quality, its strength is 15 times that of steel wire rope, 10 times that of ordinary chemical fiber and high-quality steel, and 40% higher than that of aramid fiber, second only to super carbon fiber. It has good light fastness, and its strength will decrease slightly after being exposed outdoors for more than one year. Ultra-high molecular weight polyethylene fiber has high strength, high modulus, good wear resistance, weather resistance and corrosion resistance, and is widely used in bulletproof protective produc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/06D02J13/00D02J1/22
CPCD01F11/06D02J1/222D02J13/00
Inventor 代国亮高波林明清吴传清张远军
Owner HUNAN ZHONGTAI SPECIAL EQUIP
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