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Photochromic lyocell fiber and preparation method thereof

A photochromic and fiber technology, which is applied in the fields of fiber chemical characteristics, single-component cellulose artificial filament, textiles and papermaking, etc., can solve the problems affecting the photochromic performance of lyocell fiber, photochromic monomer shedding, Weak binding force and other issues, to achieve the effect of good application and promotion prospects, strong binding ability, and less environmental pollution

Active Publication Date: 2020-06-26
当阳市鸿阳新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main component of lyocell fiber is cellulose. If the cellulose is directly combined with the photochromic monomer, the binding force between the two is weak. After repeated washing, the photochromic monomer may fall off, which will affect the lyocell fiber. photochromic properties

Method used

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  • Photochromic lyocell fiber and preparation method thereof
  • Photochromic lyocell fiber and preparation method thereof
  • Photochromic lyocell fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A photochromic lyocell fiber, which is prepared by mixing photochromic raw materials into lyocell fiber raw material spinning solution for spinning; the specific mass ratio of photochromic raw material to lyocell fiber raw material is 1:30 ; The photochromic raw material is modified photochromic lignin, and the lyocell fiber raw material is cotton pulp.

[0033] Concrete preparation comprises the following steps:

[0034] (1) Preparation of spinning solution: the NMMO aqueous solution with a mass fraction of 49% is distilled under reduced pressure to a 96% NMMO aqueous solution, the modified photochromic lignin and cotton pulp are dissolved in the NMMO aqueous solution, and the Stir and dissolve under vacuum at 125-130° C. for 3 hours to obtain a uniform spinning solution with a mass fraction of 13%. Among them, the mass ratio of modified photochromic lignin to cotton pulp is 1:30.

[0035] (2) Spinning of lyocell fiber: Add the spinning solution treated in step (1) i...

Embodiment 2

[0040] A photochromic lyocell fiber, which is prepared by mixing photochromic raw materials into lyocell fiber raw material spinning solution for spinning; the specific mass ratio of photochromic raw material to lyocell fiber raw material is 1:25 ; The photochromic raw material is modified photochromic lignin, and the lyocell fiber raw material is cotton pulp.

[0041] Concrete preparation comprises the following steps:

[0042] (1) Preparation of spinning solution: the NMMO aqueous solution with a mass fraction of 50% is distilled under reduced pressure to 98% NMMO aqueous solution, the modified photochromic lignin and cotton pulp are dissolved in the NMMO aqueous solution, and the Stir and dissolve under vacuum at 115-120°C for 3 hours to prepare a uniform spinning solution with a mass fraction of 12%. Among them, the mass ratio of modified photochromic lignin to cotton pulp is 1:25.

[0043](2) Spinning of lyocell fiber: Add the spinning solution treated in step (1) into ...

Embodiment 3

[0048] A photochromic lyocell fiber, which is prepared by mixing photochromic raw materials into lyocell fiber raw material spinning solution; the specific mass ratio of photochromic raw material to lyocell fiber raw material is 1:35 ; The photochromic raw material is modified photochromic lignin, and the lyocell fiber raw material is cotton pulp.

[0049] Concrete preparation comprises the following steps:

[0050] (1) Preparation of spinning solution: the NMMO aqueous solution with a mass fraction of 53% is distilled under reduced pressure to a 95% NMMO aqueous solution, and the photochromic organic modified photochromic lignin and cotton pulp are dissolved in the NMMO aqueous solution. Stir and dissolve in a reaction kettle under vacuum for 4 hours at 120-130° C. to prepare a uniform spinning solution with a mass fraction of 15%. The mass ratio of modified photochromic lignin to cotton pulp is 1:35.

[0051] (2) Spinning of lyocell fiber: Add the spinning solution treated...

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Abstract

The invention discloses a photochromic lyocell fiber and a preparation method thereof. The photochromic lyocell fiber is prepared by mixing a photochromic raw material into a lyocell fiber raw material spinning solution and spinning, wherein the mass ratio of the photochromic raw material to lyocell fiber raw material is 1:25-35; the photochromic raw material is modified photochromic lignin; and the lyocell fiber raw material is cotton pulp. The photochromic lyocell fiber has a good photochromic characteristic and is stable in performance; and the preparation method of the photochromic lyocellfiber is simple and low in cost.

Description

technical field [0001] The invention relates to the technical field of lyocell fibers, in particular to a photochromic lyocell fiber and a preparation method thereof. Background technique [0002] At present, with the improvement of people's living standards, various garments with special properties have been developed, such as: antibacterial, waterproof, anti-wrinkle, anti-static, etc. Among these clothes, the clothes with photochromic function are welcomed by people, especially for fields such as magicians, military camouflage, and children's clothes. With the rapid development of photochromic materials, it drives the rapid development of photochromic clothing. [0003] As a new type of regenerated cellulose fiber, lyocell fiber has many advantages, such as: short production cycle, less environmental pollution, easy to degrade after use, easy to dye, good hand feeling, skin-friendly, high mechanical strength, durable Durable, etc., therefore, it is known as one of the 21...

Claims

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Application Information

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IPC IPC(8): D01F2/00C08H7/00
CPCC08H6/00D01F2/00
Inventor 叶兆清董雄伟叶小波胡志钢
Owner 当阳市鸿阳新材料科技有限公司
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