Clean high-white viscose fiber preparation method

A viscose fiber, high-white technology, applied in the field of chemical fiber processing, can solve the problems of insufficient whiteness and many defects, and achieve the effect of improving the pressing effect, low defect content, and low water-soluble content.

Active Publication Date: 2018-09-28
赛得利(福建)纤维有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, although clean and high-white viscose fiber has achieved certain development, there are still technical problems such as many defects and insufficient whiteness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) The coniferous wood dissolving pulp and the hardwood dissolving pulp raw materials with a whiteness of 89% and a cellulose content of 90% were simultaneously immersed in an immersion barrel filled with lye in a mass ratio of 1:9. The concentration of the impregnation lye mentioned above is 215g / L and the temperature is 50°C. At the same time, add surfactant V388 with a mass ratio of 0.02:100 to the pulp in the soaking tank, and stir for 5 minutes with the high-speed stirring device in the soaking tank to make a pulp porridge with a mass fraction of about 4%.

[0035] (2) Send the porridge prepared in step (1) to a press machine, squeeze and pulverize to obtain alkali cellulose, and enter the aging drum for oxidative degradation.

[0036] (3) The alkali cellulose prepared in step (2) is sent to the yellowing machine through cooling, and carbon disulfide is added in the yellowing machine, after the yellowing reaction, the cellulose sulfonate obtained by the yellowing ...

Embodiment 2

[0044] (1) The coniferous wood dissolving pulp with a brightness of 90% and a methyl fiber content of 91% and the hardwood dissolving pulp with a brightness of 89% and a methyl fiber content of 92% were simultaneously impregnated in a mass ratio of 1:5. In the immersion barrel containing the lye, the concentration of the lye for immersion is 230g / L and the temperature is 55°C. At the same time, add surfactant V388 with a mass ratio of 0.02:100 to the pulp in the dipping tank, and stir for 15 minutes with a high-speed stirring device in the dipping tank to make a pulp porridge with a mass fraction of about 6%.

[0045] (2) Send the porridge prepared in step (1) to a press machine, squeeze and pulverize to obtain alkali cellulose, and enter the aging drum for oxidative degradation.

[0046] (3) The alkali cellulose prepared in step (2) is sent to the yellowing machine through cooling, and carbon disulfide is added in the yellowing machine, after the yellowing reaction, the cellu...

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Abstract

The invention relates to the technical field of chemical fiber processing, in particular to a clean high-white viscose fiber preparation method which includes the steps: performing meal mixing on softwood dissolving pulp and hardwood dissolving pulp according to a certain proportion, soaking, squeezing and crushing mixture to obtain alkali cellulose, oxidizing, degrading and yellowing the alkali cellulose to obtain sulphonic acid ester solution; performing filtering, defoaming and ripening to obtain viscose stoste, uniformly mixing the viscose stoste and matting agent dispersion liquid, conveying mixture into a spinning machine, and coagulating the mixture to regenerate nascent fibers; converging the nascent fibers into long tows by a godet and a two-bath groove, and enabling the long tows to sequentially enter a drawing machine, a nap groove and a desizing machine to obtain the clean high-white viscose fiber. The prepared clean high-white viscose fiber is low in defect content and less in residual sulfur content and can be used for the fields such as non-woven fabrics and medical sanitation materials, and used pulp raw materials are completely from native woods and have natural,safe, reproducible and environment-friendly advantages. The clean high-white viscose fiber is simple to prepare and low in cost, and the market competitiveness of the viscose fiber can be improved.

Description

technical field [0001] The invention relates to the technical field of chemical fiber processing, in particular to a preparation method of clean and high-white viscose fiber. Background technique [0002] Viscose fiber belongs to cellulose fiber, which is made of natural cellulose (pulp) by wet spinning. The hygroscopicity of viscose fiber is higher than that of cotton, which is very suitable for the physiological requirements of human skin, and has been widely used in the fields of textile and clothing, non-woven fabrics and medical hygiene materials. [0003] The development of clean and high-white viscose staple fibers with no or few defects is one of the hot spots in the field of viscose fiber processing. In the prior art, the application number is CN 201510276539.4, which discloses a matting high-strength low-elongation viscose fiber and its preparation method. Titanium dioxide is used as a matting agent, but this patent prepares high-strength fibers and does not invol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F2/12C08B9/00
CPCC08B9/00D01F2/12
Inventor 杨丽君郑超范海江陈忠朱长其邓海泉郭巍王波
Owner 赛得利(福建)纤维有限公司
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