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Method for preparing fine denier strong viscose fibers

A viscose fiber and strong technology, applied in the field of preparation of fine denier strong viscose fiber, can solve the problems of low breaking strength, high fiber defect content, high cost, etc., achieve low cost, extremely defect content, and improve quality.

Active Publication Date: 2018-10-19
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

[0009] In order to solve the problems of high content of fiber defects, low breaking strength and high cost, the present invention provides a method for preparing high-quality fine-denier strong viscose fibers that can significantly reduce defects. The specific technical solution is:

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (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 impregnated in an impregnation barrel filled with lye in a mass ratio of 1:10. The concentration of the impregnation lye mentioned above is 222g / L and the temperature is 50°C. At the same time, add surfactant V388 with a mass ratio of 0.03:100 to the pulp in the immersion tank, and stir for 5 minutes with the high-speed stirring device in the immersion tank to make a pulp porridge with a mass fraction of about 5%.

[0037] (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.

[0038] (3) After the copper viscosity at the outlet of the aging drum reaches 51MP, the alkali cellulose prepared in step (2) is sent to the yellowing machine through cooling, and carbon disulfide is added in the yellowing machi...

Embodiment 2

[0046] (1) The coniferous wood dissolving pulp and the hardwood dissolving pulp with a whiteness of 89% and a cellulose content of 90% are simultaneously immersed in an immersion barrel equipped with lye in a mass ratio of 1:20. The concentration of the impregnation lye is 222g / L, and the temperature is 50°C. At the same time, add surfactant LV3 with a mass ratio of 0.03:100 to the pulp in the soaking tank, and stir for 5 minutes with a high-speed stirring device in the soaking tank to make a pulp porridge with a mass fraction of about 5%.

[0047] (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.

[0048] (3) After the copper viscosity at the outlet of the aging drum reaches 51MP, 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 yel...

Embodiment 3

[0056] (1) The coniferous wood dissolving pulp and the hardwood dissolving pulp with a whiteness of 89% and a cellulose content of 90% are simultaneously immersed in an immersion barrel equipped with lye in a mass ratio of 1:10. The concentration of the impregnation lye is 222g / L, and the temperature is 50°C. At the same time, add surfactant V388 with a mass ratio of 0.03:100 to the pulp in the dipping tank, and stir for 5 minutes with a high-speed stirring device in the dipping tank to make a pulp porridge with a mass fraction of about 5%.

[0057] (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.

[0058] (3) After the copper viscosity at the outlet of the aging drum reaches 51MP, 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 ye...

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Abstract

The invention relates to the technical field of chemical fiber processing and particularly relates to a method for preparing fine denier strong viscose fibers. The method comprises the following steps: mixing softwood dissolving pulp and broadleaf wood dissolving pulp according to a certain ratio, dipping, squeezing and grinding to obtain alkali cellulose, and performing oxidative degradation andyellowing on the alkali cellulose to obtain a cellulose sulfonate solution; adding a small amount of a denaturing agent into the cellulose sulfonate solution, filtering, defoaming and curing to obtaina viscose stock solution containing the denaturing agent; spinning by adopting a two bath process, and performing special after-treatment on the formed viscose fibers, so as to obtain the fine denierstrong viscose fibers with low defect content. The preparation method is simple, the cost is low, the prepared fine denier strong viscose fibers are extremely low in defect content and extremely lowin residual sulfur content and can be applied to the field of textile and garment, and the used raw material pulp totally comes from raw woods and has the environmental-friendly characteristics of being natural, safe and recyclable.

Description

technical field [0001] The invention relates to the technical field of chemical fiber processing, in particular to a preparation method of fine denier strong viscose fiber. Background technique [0002] Viscose fiber is a kind of cellulose fiber, which is made of natural cellulose (pulp) by wet spinning. Viscose fiber has many characteristics such as high hygroscopicity, good air permeability, comfortable wearing, easy dyeing, and natural degradation. Its application range has been extended to various fields such as clothing, decoration, medical and health care, and industrial supplies. In recent years, ordinary viscose fiber has developed rapidly and the market competition is fierce, so the development of differentiated and functional viscose fiber has become one of the development directions of the viscose fiber industry. [0003] Although viscose fiber has many advantages, it also has the problem of low breaking strength, especially low wet breaking strength, which limit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F11/02D01F2/08C08B9/00D01D5/06D01D10/06
CPCC08B9/00D01D5/06D01D10/06D01F2/08D01F11/02
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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