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Method for producing cellulose fiber

一种纤维素纤维、纤维素粉末的技术，应用在纤维素溶液中的人造长丝、单组分纤维素人造长丝、纤维素/蛋白质共轭人造长丝等方向，能够解决不具有细度、难以确保物理性质、难以维持全体长丝均匀性等问题，达到强度和弹性率高、形态稳定性优异、粘着力优异的效果

Inactive Publication Date: 2006-05-17
HYOSUNG ADVANCED MATERIALS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the number of filaments at the spinneret used at this time was only 50, and it did not have sufficient fineness as an industrial yarn. In addition, when used as an industrial yarn, it also had the ability to prevent fibrillation. Insufficient shortcomings
[0007] As industrial yarns, generally available filaments are controlled to be manufactured at about 1000 deniers to 2000 deniers. Considering the viewpoint of being composed of hundreds of filaments at this time, it is considered that the filaments of the patent are used in burning filaments and heat treatment. It is difficult to ensure the physical properties required as industrial yarn
In fact, in the spinning of fibers, compared with the spinning of fine denier fibers, it is difficult to adjust the cooling, washing and drying conditions of fibers when spinning coarse denier fibers
Therefore, it is difficult to express physical properties above a certain level, and it is difficult to maintain the uniformity of each filament in the entire filament. Therefore, it is considered that it is difficult to apply to industrial yarns only by referring to about 50 fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Salt (calcium chloride) and polyvinyl alcohol with a weight-average degree of polymerization of 2000 are dissolved in NMMO solution. At this time, relative to the NMMO solution, the total content of salt and polyvinyl alcohol is 2% by weight. Salt and polyethylene The composition ratios of alcohols were 90:10, 70:30, and 50:50, respectively.

[0079] First, the liquid concentrated NMMO solution that is dissolved with salt and polyvinyl alcohol is injected into the twin-screw extruder (the number of barrels is 10, the diameter and the length of the screw) at 78° C. The ratio (L / D) is 45). Thereafter, a cellulose sheet having a weight-average degree of polymerization of 1200 (Bucheye, V-81) was put into a grinder equipped with a 250 μm filter to produce a cellulose powder with a diameter of 200 μm and a moisture regain of 5%. Inject the cellulose powder into the extruder at a speed of 853g / hour with a screw feeder. At this time, the residence time in the swelling zone of...

Embodiment 2

[0086] Salt (calcium chloride) and polyvinyl alcohol with a weight-average degree of polymerization of 2000 are dissolved in NMMO solution. At this time, the composition ratio of salt and polyvinyl alcohol is 50:50, and the total content of salt and polyvinyl alcohol is respectively Adjusted to 0.5% by weight, 3% by weight, 5% by weight, and 8% by weight of the NMMO solution. Thereafter, cellulose filaments were produced in the same manner as in Example 1.

[0087] Example 2

Embodiment 3

[0089] As in Example 1, wherein the total content of salt and polyvinyl alcohol is adjusted to 2% by weight of the NMMO solution, the composition ratio of salt and polyvinyl alcohol is adjusted to 80:20, and the number of nozzles is changed to 700,1000 spinneret holes , 1500 nozzles. The fineness of the final multifilament wound up was adjusted to 1500 denier.

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Abstract

The present invention provides a cellulose fiber having high strength, high modulus of elasticity, and low shrinkage properties, and excellent performance in preventing fibrillation and adhesion to rubber. It is produced by dissolving 0.1% to 10% by weight of salt and polyvinyl alcohol in a liquid concentrated NMMO solution to produce an NMMO solution; mixing, swelling, and dissolving the NMMO solution and cellulose powder to produce a cellulose solution Extrude and spin the cellulose solution through a spinning nozzle with 500 to 2000 spinneret holes, and then solidify it through an air layer and a coagulation bath to obtain multifilaments; wash the obtained multifilaments with water, Drying, oiling and coiling.

Description

technical field [0001] The present invention relates to cellulose fibers having high strength, high modulus of elasticity, and low shrinkage characteristics while being excellent in both fibrillation prevention performance and adhesion to rubber. Specifically, the present invention relates to cellulose fibers manufactured by the following method, Cellulose fiber excellent in strength and modulus of elasticity and improved in fibrillation prevention performance by dissolving salt together with polyvinyl alcohol in liquid concentrated N-methylmorpholine-N-oxide (hereinafter referred to as NMMO) solution, the solution and cellulose powder are mixed, swollen and dissolved, and then spun through a spinning nozzle with 500-2000 spinneret holes. Background technique [0002] Although cellulose has a high affinity with other substances, it is difficult to dissolve it in general solvents because of the crystalline structure formed by strong hydrogen bonds between molecules or within ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F8/10D02G3/48
CPCB82Y30/00C08B1/003D01F2/00Y10T428/2933D01F2/02D01F2/10D01F11/02D02G3/48D10B2505/12
Inventor 权益铉崔秀明李泰政
Owner HYOSUNG ADVANCED MATERIALS CORP
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