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Preparation method of functional regenerated cellulose fiber

A technology of regenerated cellulose and cellulose, applied in the production of complete sets of equipment for artificial threads, single-component cellulose artificial filaments, cellulose/protein conjugated artificial filaments, etc., can solve problems such as technology to be developed, and achieve The method is concise and flexible, and the effect of operability is strong

Active Publication Date: 2017-02-22
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, the preparation of regenerated cellulose composite fibers by solution blending is still rarely a technology of mixing cellulose solution, cellulose derivative solution and functional powder to make mother liquor, and related technologies need to be developed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of antibacterial regenerated cellulose fiber, comprising the steps of:

[0033]Using cellulose solvent N-methylmorpholine-N-oxide (NMMO) / water (wherein the proportion of water is 13.8wt%) to dissolve the cellulose with a low polymerization degree of 200 to obtain a low polymerization degree fiber A functional powder carrier solution with an elemental concentration of 6wt%; then the silver antibacterial functional powder and the carrier solution with an average particle size of less than 1 μm and insoluble in the coagulant used in the coagulation step of the cellulose solvent and the fiber and the carrier solution are used The extruder is stirred and mixed, wherein the stirring speed is 100 rpm, the stirring time is 0.5 hours, and the mass ratio of low polymerization degree cellulose and silver functional powder is 1:1, and the antibacterial functional mother liquor is obtained; finally Inject the antibacterial functional mother liquor into the cellu...

Embodiment 2

[0036] A preparation method of antibacterial regenerated cellulose fiber, comprising the steps of:

[0037] Using cellulose solvent N-methylmorpholine-N-oxide (NMMO) / water (wherein the proportion of water is 13.4wt%) to dissolve the cellulose with a low polymerization degree of 500 to obtain a low polymerization degree fiber A functional powder carrier solution with a concentration of 15wt%; then the copper functional powder and the carrier solution with an average particle size of less than 1 μm and insoluble in the coagulant used in the coagulation step of the cellulose solvent and the fiber are used in a kneader Stirring and mixing, wherein the stirring speed is 300 rpm, the stirring time is 1 hour, the mass ratio of low polymerization degree cellulose and copper functional powder is 9:1, and the antibacterial functional mother liquor is obtained; finally the antibacterial functional The active mother liquor is injected into the cellulose spinning solution with a degree of ...

Embodiment 3

[0040] A preparation method of antibacterial regenerated cellulose fiber, comprising the steps of:

[0041] Adopting cellulose solvent 1-butyl-3-methylimidazolium chloride salt to dissolve the low polymerization degree cellulose that the polymerization degree is 300, the functional powder carrier solution that the obtained low polymerization degree cellulose concentration is 7wt%; Then average The particle size is less than 1 μm, and the zinc functional powder that is insoluble in the coagulant used in the coagulation step of the cellulose solvent and the fiber and the carrier solution are stirred and mixed with a screw extruder, wherein the stirring speed is 200 rpm, and the stirring The length of time is 0.6 hours, the mass ratio of low polymerization degree cellulose and zinc functional powder is 10:1, and the antibacterial functional mother liquor is prepared; finally, the antibacterial functional mother liquor is injected into the polymerization degree of 600 in the way of...

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Abstract

The invention relates to a preparation method of a functional regenerated cellulose fiber. The method comprises the steps that cellulose with low polymerization degree is dissolved with a cellulose solvent, and a carrier solution of functional powder is obtained; the functional powder is mixed with the carrier solution under the intense shear effects provided by a stirring device, and a functional mother solution is obtained; the functional mother solution is injected into a cellulose spinning solution in a mode of online addition, and the spinning solution is subjected to extrusion and solidification to form the functional regenerated cellulose fiber. According to the preparation method, the problems that by means of a traditional method, the functional powder and the spinning solution are difficult to mix and dispersion is nonuniform are overcome, the used mother solution is solidified and formed with fibers and enters the solvent and the coagulating bath system without any additional auxiliaries. The forming method is simple, flexible and efficient, the production of the functional regenerated cellulose fiber can be achieved based on a conventional production line.

Description

technical field [0001] The invention relates to a preparation method of functional regenerated cellulose fibers. Background technique [0002] Regenerated cellulose fiber is a cellulose fiber prepared by regeneration from natural cellulose. The raw material of regenerated cellulose fiber can be regenerated, has good hygroscopicity and high wearing comfort, and is the main type of chemical fiber. Since the melting point of cellulose is higher than the decomposition temperature, the production of regenerated cellulose fibers mainly adopts the method of wet spinning or dry spray wet spinning. According to the difference of production process, commercialized regenerated cellulose fibers mainly include viscose fiber, lyocell fiber, cupro fiber and so on. [0003] With the development of regenerated cellulose fiber technology, functional regenerated cellulose fiber has become a new development direction. Among them, adding functional additives to the spinning dope, followed by ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/02D01F2/00D01F1/10D01F1/07D01D1/02D01D5/06D01D13/02
CPCD01D1/02D01D5/06D01D13/02D01F1/07D01F1/103D01F2/00D01F8/02
Inventor 张玉梅王华平王朝生陈烨
Owner DONGHUA UNIV
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