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Anti-bacterial Lyocell fiber and preparation method thereof

A technology of fiber and cellulose pulp, which is applied in the field of Lyocell fiber, can solve the problems of difficulty in adding Lyocell fiber, difficulty in uniform dispersion, and large specific surface energy, and achieve excellent physical and mechanical properties, lower surface polarity and specific surface energy, The effect of easy production process

Inactive Publication Date: 2015-12-23
SHANDONG YINGLI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics of large specific surface area and specific surface energy, nano-ZnO is easy to agglomerate; on the other hand, the surface of nano-ZnO is very polar, and it is not easy to disperse uniformly in organic media. There have always been insurmountable technologies in fiber production. The problem is that it is especially difficult to add to Lyocell fibers. At present, there are no relevant research reports on Lyocell fibers with nano-ZnO added in the market, and no related products have come out.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] An antibacterial Lyocell fiber, the antibacterial Lyocell fiber contains nano ZnO with a mass content of 2.3%, the fineness of the antibacterial Lyocell fiber is 1.1dtex, the strength is 1.5cN / dtex, and the elongation at break is 10.5%.

Embodiment 2

[0027] An antibacterial Lyocell fiber, the antibacterial Lyocell fiber contains nano-ZnO with a mass content of 4%, the fineness of the antibacterial Lyocell fiber is 2.2dtex, the strength is 2.25cN / dtex, and the elongation at break is 12.5%.

Embodiment 3

[0029] Nano ZnO is subjected to surface modification treatment, first ball milled to a particle size of 1-20nm, washed and soaked with a silane coupling agent solution for 0.5h, dried at 80°C for 2h, and then ball-milled again to a particle size of 1-20nm.

[0030] The nano-ZnO treated by surface modification is uniformly mixed with the NMMO aqueous solution with a mass concentration of 72% to obtain a ZnO-containing NMMO solution. The mixing temperature is 65 ° C. The ratio of the nano-ZnO to the NMMO aqueous solution is 0.01: 1.

[0031] The pretreated cellulose pulp was premixed with the ZnO-containing NMMO solution, the premixing temperature was 65° C., and the mixing and dissolving ratio of the cellulose pulp and the ZnO-containing NMMO solution was 1:1.

[0032] Vacuumize the above premixed porridge to -2×10 at 120°C 4 The spinning dope was obtained by dehydration of Pa, in which the cellulose content was 27wt%, the NMMO content was 64wt%, the water content was 8.1wt%, ...

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Abstract

The invention discloses anti-bacterial Lyocell fiber and a preparation method of the anti-bacterial Lyocell fiber. The anti-bacterial Lyocell fiber contains nano ZnO of which the mass content is 0.1 to 10 percent, wherein the fineness of the anti-bacterial Lyocell fiber is 1.1 to 4.3 dtex, the strength of the anti-bacterial Lyocell fiber is 1 to 5 cN / dtex, and the elongation at break of the anti-bacterial Lyocell fiber is 8 to 20 percent. A preparation method comprises the steps of uniformly mixing the nano ZnO subjected to surface modification treatment with NMMO (N-Methylmorpholine-N-Oixde) water solution of which the mass concentration is 70 to 87 percent to obtain ZnO-contained NMMO solution; then dissolving cellulose pulp; obtaining the anti-bacterial Lyocell fiber through spinning. The production technology is easy to control and is environment-friendly and pollution-free, industrial production is easy to realize, the nano ZnO is uniformly dispersed in a product, and the anti-bacterial performance of the product is good.

Description

technical field [0001] The invention relates to the technical field of functional cellulose fibers, in particular to a Lyocell fiber with antibacterial function. Background technique [0002] Cellulose is the most abundant and widely distributed natural polymer on the earth, and it is an inexhaustible renewable resource in nature. Cellulose fiber has the advantages of high strength, good dyeability, good spinning performance and wide industrial application. Therefore, the market demand for cellulose fiber in the world has continued to increase in recent years. Lyocell fiber is made of cotton linters, trees, bamboo and other renewable resources, using NMMO as a solvent, and is made by dry jet wet spinning. It has many excellent properties of natural fibers and synthetic fibers, and the production process is green and environmentally friendly. fiber. [0003] Lyocell fiber has the advantages of high strength, good dyeability, good spinning performance and wide industrial app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/00D01F1/10
Inventor 孙永连高建李永威郑世睿李晓东刘建伟
Owner SHANDONG YINGLI IND
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