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A kind of hemp high-strength regenerated cellulose fiber and its production method

A technology of regenerated cellulose and cellulose fibers, applied in fiber processing, fiber chemical characteristics, wet spinning, etc., can solve problems such as unsuitability for large-scale production and unsatisfactory indicators such as hemp regenerated cellulose fibers

Active Publication Date: 2020-10-23
潍坊欣龙生物材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN201010265600.2 discloses a preparation method of hemp regenerated cellulose fiber, which requires the average degree of polymerization of hemp pulp to be 400-450, which imposes many restrictions on raw materials and is not suitable for large-scale production
[0006] Patent CN200410004397.8 discloses hemp regenerated cellulose fiber pulp, functional fiber and its preparation method. The product quality is improved by changing the production process of hemp pulp, but the indicators such as the strength of the produced hemp regenerated cellulose fiber are not satisfactory

Method used

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  • A kind of hemp high-strength regenerated cellulose fiber and its production method
  • A kind of hemp high-strength regenerated cellulose fiber and its production method
  • A kind of hemp high-strength regenerated cellulose fiber and its production method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A preparation process of hemp high-strength regenerated cellulose fiber comprises the following steps:

[0049] Using hemp pulp as raw material, the spun viscose is prepared through steps including secondary dipping, aging, dissolving and spinning;

[0050] 1. Second impregnation: The alkali cellulose after the first impregnation is impregnated twice; during the second impregnation, the concentration of NaOH impregnation solution is 165g / L, the impregnation temperature is 40°C, and the impregnation time is 45 minutes. The auxiliary agent LV-3 is added during the impregnation process. The amount of the auxiliary agent (relative to the methyl fiber in the alkali cellulose) is: 0.03%. After the second impregnation, the alkali cellulose composition is: the methyl fiber content is 29wt%, and the NaOH content is 13wt. %.

[0051] 2. Aging: The aging temperature is 15°C, the time is 10 hours, and the viscosity of copper ammonia at the outlet of the aging is controlled to 70mP...

Embodiment 2

[0056] A preparation process of hemp high-strength regenerated cellulose fiber comprises the following steps:

[0057] Using hemp pulp as raw material, the spun viscose is prepared through steps including secondary dipping, aging, dissolving and spinning;

[0058] 1. Second impregnation: the alkali cellulose after the first impregnation is impregnated twice; during the second impregnation, the concentration of NaOH impregnation solution is 178g / L, the impregnation temperature is 45°C, and the impregnation time is 40 minutes. The auxiliary agent LV-3 is added during the impregnation process, and the amount of the auxiliary agent (relative to the methyl fiber in the alkali cellulose) is: 0.05%. After the second impregnation, the alkali cellulose composition is: the methyl fiber content is 30wt%, and the NaOH content is 12wt%. .

[0059] 2. Aging: the aging temperature is 20°C, the time is 7 hours, and the viscosity of copper ammonia at the outlet of the aging is controlled to 7...

Embodiment 3

[0064] A preparation process of hemp high-strength regenerated cellulose fiber comprises the following steps:

[0065] Using hemp pulp as raw material, the spun viscose is prepared through steps including secondary dipping, aging, dissolving and spinning;

[0066] 1. Second impregnation: the alkali cellulose after the first impregnation is impregnated twice; during the second impregnation, the concentration of NaOH impregnation solution is 183g / L, the impregnation temperature is 48°C, and the impregnation time is 35 minutes. The auxiliary agent LV-3 is added during the impregnation process. The amount of the auxiliary agent (relative to the methyl fiber in the alkali cellulose) is: 0.07%. After the second impregnation, the alkali cellulose composition is: the methyl fiber content is 31wt%, and the NaOH content is 12wt. %.

[0067] 2. Aging: the aging temperature is 25°C, the time is 6 hours, and the viscosity of copper ammonia at the outlet of the aging is controlled to be 78...

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Abstract

The invention provides linen material high-tenacity regenerated cellulose fiber. The linen material high-tenacity regenerated cellulose fiber has a C-shaped linen-like cavity section; the dry breakingstrength of the cellulose fiber is more than or equal to 2.8 cN / dtex; and the wet breaking strength is more than or equal to 1.50 cN / dtex. The invention also provides a preparation method of linen material high-tenacity regenerated cellulose fiber. By the method, the linen material high-tenacity regenerated cellulose fiber is prepared from linen pulp through the steps of dipping for twice, ageing, dissolving and spinning. The linen material high-tenacity regenerated cellulose fiber with a C-shaped cavity structure and with linen-like effect, high tenacity and high size stability is prepared by combining a linen material denaturing glue-making process with a zinc-free aluminum sulfate consolidation forming bath and through reasonable drafting distribution and process combination.

Description

technical field [0001] The invention relates to a hemp regenerated cellulose fiber and a production method thereof, in particular to a high-strength regenerated cellulose fiber produced from hemp pulp as a raw material and a production method thereof, belonging to the technical field of textiles. [0002] technical background [0003] Regenerated cellulose fiber has the characteristics of excellent hygroscopicity, air permeability, no static electricity, good dyeing performance, and flexible adjustment of fineness and length. There have also been breakthroughs in the development of raw materials. In addition to cotton pulp and dissolving wood pulp, some paper modified pulp, bamboo pulp, hemp pulp, etc. are also used in the production of regenerated cellulose fibers. Compared with the regenerated cellulose fiber produced from cotton pulp and wood pulp, hemp regenerated cellulose fiber produced from hemp material has good wearability and good antibacterial performance. However,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01D5/06D01D5/12D01D5/24D01D5/253
Inventor 马君志吴亚红刘长军丁兆涛刘军东
Owner 潍坊欣龙生物材料有限公司
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