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Hollow regenerated cellulose fiber and manufacturing method thereof

A technology of regenerated cellulose and manufacturing methods, applied in the direction of chemical post-treatment of cellulose/protein artificial filaments, artificial filaments made of viscose, etc., can solve the problems of harsh conditions, harmful formaldehyde, etc., to improve production efficiency, cost reduction effect

Active Publication Date: 2015-03-18
JIANGSU GOLDSUN TEXTILE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conditions of this method are relatively harsh, and the formaldehyde used is also harmful to the human body.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Cotton pulp with a degree of polymerization of 520 and a cellulose content of 93% was used to prepare a spinning viscose solution through the processes of dipping, pressing, crushing, aging, yellowing, dissolving, filtering, and defoaming. And in the post-dissolution process of cellulose, add aliphatic amine polyoxyethylene ether AC1815 equivalent to 1.0% of the mass percentage of methyl cellulose, and 5% of water-soluble vinylon with a water melting temperature of 10°C. After 20 minutes, add the equivalent of methyl cellulose The polyethylene glycol diglycidyl ether of 0.2% of fiber mass percentage content, stirs evenly. The prepared cellulose-containing 8.2%, NaOH6.8%, viscosity (falling ball method) 50s, maturity (10%NH 4 Cl) 16ml of cellulose xanthate spinning stock solution, which is spun by wet spinning process. The composition of the coagulation bath is: sulfuric acid 110g / L, sodium sulfate 300 g / L, zinc sulfate 32 g / L, and a hollow fiber of 2.22dtex*51mm is pro...

Embodiment 2

[0020] Using wood pulp with a degree of polymerization of 500 and a cellulose content of 92.5%, the spinning viscose solution was prepared through the processes of dipping, pressing, crushing, aging, yellowing, dissolving, filtering, and defoaming. And in the process of cellulose impregnation, add polyoxyethylene alkylamine V32 equivalent to 8.0% (wt) of methyl cellulose, 7% of water-soluble vinylon with a water melting temperature of 50 ° C, after 30 minutes, add 6% of methyl cellulose (wt) of epichlorohydrin, stirred evenly and stood still, made methyl fiber 8.5%, NaOH 6.4%, viscosity (falling ball method) 53s, maturity (10%NH 4 Cl) 15ml of cellulose xanthate spinning stock solution, which is spun by wet spinning process. The composition of the coagulation bath is: sulfuric acid 90g / L, sodium sulfate 330 g / L, zinc sulfate 38 g / L, and a hollow fiber of 3.33dtex*51mm is produced by drawing. Then pickling, water washing, desulfurization, water washing, dehydration, oiling, dry...

Embodiment 3

[0022] Cotton pulp with a degree of polymerization of 550 and a cellulose content of 93.5% was used to prepare a spinning viscose solution through successive processes of dipping, pressing, crushing, aging, yellowing, dissolving, filtering, and deaeration. And in the post-dissolving process of cellulose, add PEG1500 equivalent to 15% (wt) of methyl cellulose, and 10% of water-soluble vinylon with a water melting temperature of 90°C. After 20 minutes, add PEG1500 equivalent to 12% (wt) of methyl cellulose Hydroxymethyl dihydroxyethylene urea, 8.1% methyl cellulose, 6.5% NaOH, viscosity (falling ball method) 46s, maturity (10%NH 4 Cl) 13ml of cellulose xanthate spinning stock solution, which is spun by wet spinning process. The composition of the coagulation bath is: sulfuric acid 100g / L, sodium sulfate 320 g / L, zinc sulfate 40 g / L, and high effective drafting to produce 3.33dtex*51mm hollow fiber. Then pickling, water washing, desulfurization, water washing, dehydration, oilin...

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PUM

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Abstract

The invention relates to a manufacturing method of a hollow regenerated cellulose fiber. The manufacturing method comprises the following steps of: preparing a spinning viscose solution through working procedures of soaking, squeezing, grinding, aging, yellowing, dissolving, filtering and defoaming on cellulose pulp, then spinning, in the dissolving step out of the working procedures for the preparation of the spinning viscose solution, adding one or mixture of water-soluble vinylon, a denaturing agent and a crosslinking agent, and then spinning to prepare the hollow regenerated cellulose fiber, wherein the fineness of the hollow regenerated cellulose fiber is 2.22-3.33 dtex, the dry strength of the hollow regenerated cellulose fiber is 2.2-2.6 cN / dtex, the wet strength of the hollow regenerated cellulose fiber is 1.2-2.0 cN / dtex, the degree of hollowness of the hollow regenerated cellulose fiber is greater than or equal to 70%, and the dry elongation is 10-20%. The manufacturing method is simple to operate, does not need special processing technology or equipment, does not release gas in a spinning process, and solves the problems such as reduction of the end breakage rate in spinning. The produced hollow fiber not only has high degree of hollowness, but also cannot collapse or deform due to after finishing and machining.

Description

technical field [0001] The invention relates to a regenerated cellulose fiber and a preparation method thereof, in particular to a preparation method for preparing a high-hollow cellulose fiber by using cellulose. Background technique [0002] Hollow viscose fibers include Viloft fibers, super-inflated fibers (S.I fibers), flat fibers (PM 1 , PM 2 fiber), the first report of hollow viscose fiber was in 1927. Hollow viscose fiber has the characteristics of low density and strong covering power, especially hollow viscose fiber can give the fabric a very peculiar feel; in some fabrics, such as plain woven shirts blended with hollow viscose fiber and polyester, It feels exactly like cotton; and in twill it feels like wool. That is, the hollow viscose fiber can produce a product with a cool feel on the one hand; on the other hand, it can produce a product with a soft and warm feel. [0003] Sodium carbonate is added to the viscose, and a large amount of carbon dioxide gas is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/08D01F11/02
Inventor 胡青青陈红霞陆鹏丁可敬
Owner JIANGSU GOLDSUN TEXTILE SCI & TECH
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