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Preparation method of highly oriented high tenacity regenerated cellulose fiber and highly oriented high tenacity regenerated cellulose fiber

A regenerated cellulose, high orientation technology, applied in the fiber field, can solve the problems of expensive solvents, harsh preparation conditions, environmental pollution, etc., and achieve the effect of low raw material, high orientation degree, and broad application prospects

Active Publication Date: 2021-05-11
WUYI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the objectives of the present invention is to provide a method for preparing regenerated cellulose fibers with high orientation and high tenacity, so as to improve the current technical problems of harsh preparation conditions, expensive solvents and easy environmental pollution of regenerated cellulose fibers

Method used

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  • Preparation method of highly oriented high tenacity regenerated cellulose fiber and highly oriented high tenacity regenerated cellulose fiber
  • Preparation method of highly oriented high tenacity regenerated cellulose fiber and highly oriented high tenacity regenerated cellulose fiber
  • Preparation method of highly oriented high tenacity regenerated cellulose fiber and highly oriented high tenacity regenerated cellulose fiber

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preparation example Construction

[0042] According to one aspect of the present invention, the present invention provides a kind of preparation method of highly oriented high tenacity regenerated cellulose fiber, comprises the steps:

[0043] (a) mixing the regenerated cellulose solution with a crosslinking agent to obtain a mixed solution of regenerated cellulose and a crosslinking agent;

[0044] (b) spinning the mixed solution of regenerated cellulose and crosslinking agent, and solidifying it through a coagulation bath to obtain wet regenerated cellulose fibers;

[0045] (c) confinement drying of wet regenerated cellulose fibers to obtain regenerated cellulose fibers with high orientation and high tenacity.

[0046] In step (a), the crosslinking reaction is carried out at the regenerated viscose temperature.

[0047] The method for preparing regenerated cellulose fibers with high orientation and high strength and toughness provided by the present invention first cross-links the regenerated cellulose solut...

Embodiment 1

[0071] This embodiment provides a kind of regenerated cellulose fiber, which is prepared according to the following steps:

[0072] (1) Add 30mL of epichlorohydrin (mass concentration: 99%) to 1000mL of 5wt% regenerated cellulose (number average molecular weight: 100,000) solution at 0°C, stir evenly, and centrifuge to defoam to obtain a mixed solution;

[0073] (2) Put the mixed solution in the barrel of the wet spinning machine, apply a pressure of 0.8 MPa to the barrel, make the mixed solution pass through the spinning nozzle with a diameter of 120 μm, and enter the coagulation bath of a sulfuric acid solution with a concentration of 0.2 mol / L to stop quickly Chemical cross-linking reaction and curing to obtain wet regenerated cellulose fibers;

[0074] (3) After the wet regenerated cellulose fiber is washed with water, the two ends of the wet fiber are fixed after being wound on the upper filament tube, and the regenerated cellulose fiber is obtained by confinement drying ...

Embodiment 2

[0076] This embodiment provides a kind of regenerated cellulose fiber, which is prepared according to the following steps:

[0077] (1) Add 10 mL of epichlorohydrin (mass concentration: 99%) to 1000 mL of 6 wt % regenerated cellulose (number average molecular weight: 100,000) solution at 5° C., stir evenly, and centrifuge to defoam to obtain a mixed solution;

[0078] (2) Put the mixed solution in the barrel of the wet spinning machine, apply a pressure of 0.4 MPa to the barrel, make the mixed solution pass through the spinning nozzle with a diameter of 160 μm, and enter the coagulation bath of the phytic acid solution with a concentration of 0.5 mol / L to rapidly Terminate the chemical crosslinking reaction and solidify to obtain wet regenerated cellulose fibers;

[0079] (3) After the wet regenerated cellulose fiber is washed with water, the two ends of the wet fiber are fixed after being wound on the upper filament tube, and the regenerated cellulose fiber is obtained by con...

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Abstract

The invention provides a preparation method of highly oriented high-strength regenerated cellulose fiber and highly oriented high-strength regenerated cellulose fiber, which relate to the field of fiber technology. The preparation method comprises the following steps: (a) regenerated cellulose solution and crosslinking agent to obtain a mixed solution of regenerated cellulose and cross-linking agent; (b) spinning the mixed solution and solidifying it through a coagulation bath to obtain wet regenerated cellulose fibers; (c) confinement of wet regenerated cellulose fibers drying to obtain regenerated cellulose fibers with high orientation and high tenacity; the technical problems of harsh preparation conditions for regenerated cellulose fibers, expensive solvents, and easy environmental pollution are improved. The preparation method provided by the invention is not only simple in process, cheap in raw materials, but also green Environmentally friendly, the regenerated cellulose fiber made at the same time has high degree of orientation, high strength and high toughness, and exhibits obvious optical anisotropy under polarized light, which is a potential functional fiber material.

Description

technical field [0001] The invention relates to the field of fiber technology, in particular to a preparation method of highly oriented high-strength regenerated cellulose fibers and highly oriented high-strength regenerated cellulose fibers. Background technique [0002] The consumption of non-renewable resources and environmental pollution caused by petroleum-based polymer materials make it more and more urgent to make new materials from bio-based polymers. At present, the use of renewable resources to replace petroleum-based polymer materials to produce plastics and fibers is the trend of future material development. As the most abundant renewable resource on earth, cellulose has the advantages of low cost, excellent thermal stability and degradability, and has attracted extensive attention from researchers. [0003] Regenerated cellulose fiber has been widely used in people's daily life, involving surgical medical supplies, textiles, water treatment, automobile industry...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/00D01F1/10D01D5/06
CPCD01D5/06D01F1/10D01F2/00
Inventor 叶冬冬邹捷
Owner WUYI UNIV
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