Health type viscose fiber with high wet modulus and its production process and use

A technology of high wet modulus viscose and a manufacturing method, which is applied in the directions of rayon made of viscose, wet spinning, etc., can solve problems such as limiting application performance, and achieve the effects of full hand feeling and simple manufacturing method.

Inactive Publication Date: 2002-01-23
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chitin was first discovered from mold by French scientist Braconnot in 1811, but because chitin is insoluble in general solvents such as water, dilute acid and alkali, its application performance is limited.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Add 0.3 parts of chitin and 6 parts of 45% NaOH aqueous solution into the container for alkalization for 2 hours at a temperature of 20°C. The resulting alkali chitin is pressed to 4 times its dry weight. After crushing, put it into the yellowing machine for yellowing. Add 4 parts of crushed ice, add CS after vacuuming in the yellowing machine 2 0.2 parts, yellowing time 100 minutes, temperature -20°C. After the yellowing was completed, 4 parts of water were added for dissolving for 3 hours at a dissolving temperature of 10° C., and the prepared chitin xanthate solution was left standing for use.

[0021] Take another 6 parts of cotton pulp (DP=900) and 120 parts of NaOH aqueous solution with a concentration of 20%, put them into a container for alkalization for 1 hour at a temperature of 20°C, and squeeze the resulting alkali cellulose to 3 times the dry weight , aged at 20°C for 16 hours after pulverization, and then yellowed in a yellowing machine for 60 minutes a...

Embodiment 2

[0025] Soak 2-9kg of cellulose and 0.02-2kg of chitin in a 10-50% sodium hydroxide solution at -10-95°C for 10-300 minutes, with a bath ratio of 1:15-25, and squeeze it to dry weight. 2.5-5 times, crushed and aged at 10-40°C for 8-30 hours. Then vacuum, add 20-90% (for raw materials) CS 2 , After 1-4 hours of yellowing at 5-25 ° C, the ratio of the yellowing bath should depend on the method and raw materials used. Add appropriate amount of lye and soft water or crushed ice to dissolve, and obtain a spinning stock solution with a high polymer content of 4-10%. The blending of the two polymers can be carried out during yellowing and dissolution; it can also be made into solutions separately, and then the solution blending is carried out. Then the blended high wet modulus viscose fiber is produced by wet spinning method.

[0026] Put the spinning raw fluid into the coagulation bath, the spinning pressure is 0.2-0.6Mpa, the content of sulfuric acid in the coagulation bath is 28...

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PUM

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Abstract

The present invention is composed of cellulose and chitin with weight ration 2-9:0.02-2. Alkalifying and etiolating cellulose and chitin obtain the xanthogenate of cellulose and chitin. Dissolving the said xanthogenate of cellulose and chitin in sodium of hydroxide and water makes spinning dope. Using wet spinning or wet pipe forming methods, after drawing procedure makes the fiber. The physical and mechanical performance of the fiber can be enhanced after treatment with simple technique. The fiber can fabricate textile and cloth providing features of antibiosis, stopping itch and bleeding, odor dispelling. Fibrous membrane made by mixed cellulose with chitin as raw material can be used in artificial organs or water purifier.

Description

Technical field: [0001] The present invention relates to a kind of man-made fiber, specifically a kind of viscose fiber of health-care type with high wet modulus, its manufacturing technology and its application for making health-care fabric or hollow fiber membrane. Background technique: [0002] Chitin was first discovered from mold by French scientist Braconnot in 1811, but because chitin is insoluble in general solvents such as water, dilute acid and alkali, its application performance is limited. It was not until the 1950s that we had a thorough understanding of the chemical structure, properties and manufacturing methods of chitin. It was found that chitin can be made into xanthate by yellowing method and dissolved in dilute alkali, thus expanding its application. range. [0003] Chitin and its derivatives have health-care effects. With the continuous improvement of living standards and quality, people's demand for health-care fabrics is also increasing. The health-ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01D5/06D01F2/08
Inventor 王庆瑞何春菊陈雪英
Owner DONGHUA UNIV
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