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Semi-dull low-extensibility viscose fiber as well as preparation method and application thereof

A viscose fiber, semi-dull technology, applied in the direction of stretch spinning, cellulose/protein artificial filament chemical post-treatment, wet spinning, etc., can solve the problem that the market share of viscose fiber is reduced and there is no greater limit Satisfies the problems of downstream new textile development and industrial upgrading, and achieves the effects of good color fastness of finished products, small deformation of finished fabrics and good uniformity

Inactive Publication Date: 2015-08-19
YIBIN GRACE GROUP CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Only the above-mentioned published patent documents can know that in order to produce differentiated and functional viscose fibers, the prior art is realized by changing the production process, which involves raw materials, viscose molding and its process parameters Compared with ordinary viscose fiber, the obtained viscose fiber has been properly optimized in terms of fineness and strength, but for the increasingly fierce market competition, the differentiated viscose fiber does not meet the downstream needs to a greater extent. The development of new textiles and industrial upgrading, especially the development of fiber raw materials such as tencel, modal, and cupro fibers, which are also regenerated from natural cellulose materials, have reduced the market share of viscose fibers.

Method used

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  • Semi-dull low-extensibility viscose fiber as well as preparation method and application thereof
  • Semi-dull low-extensibility viscose fiber as well as preparation method and application thereof
  • Semi-dull low-extensibility viscose fiber as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] The semi-dull low elongation stretched viscose fiber of the present embodiment is prepared by the following method:

[0062] A: Immerse the pulp raw material in an immersion barrel filled with lye, and grind it with a grinder to make a pulp porridge with a concentration of 3%;

[0063] B: Send the porridge prepared in step A to a press machine, and then send it to a pulverizer for crushing to obtain alkali cellulose, and then send the alkali cellulose to a kneading machine for kneading treatment, and obtain a concentration of 35% after treatment porridge;

[0064] C: Mix the porridge prepared in step B with lye and send it to the reactor, add pure oxygen to the reactor for directional depolymerization, after depolymerization, the degree of polymerization is 400-600, and the purity of cellulose is 98.0-98.5 % alkali cellulose;

[0065] D: The alkali cellulose prepared in step C is sent to the yellowing machine, and carbon disulfide is added in the yellowing machine to ...

Embodiment 2

[0076] The difference between the semi-dull low elongation elongation viscose fiber of this embodiment and embodiment 1 is: the semi-dull low elongation viscose fiber detected by random sampling in this embodiment has the following performance indicators different from embodiment 1 system:

[0077] The dry breaking strength is 3.10 cN / dtex, the wet breaking strength is 1.62cN / dtex,

[0078] The strength required to produce 5% elongation in wet state is 0.6cN / dtex,

[0079] The dry elongation at break is 13%, and the wet elongation at break is 20.8%.

[0080] The crystallinity is 40%, the radial water swelling degree is 22.5%, and the matting agent content is 0.45%.

[0081] The whiteness is 84.6%, the linear density deviation rate is -1.0%, the residual sulfur is 7.0mg / 100g,

[0082] The length deviation rate is +1.0%, the ultra-long fiber rate is 0.5%,

[0083] The double-length fiber is 1.0mg / 100g, and the defect is 1.0mg / 100g.

Embodiment 3

[0085] The difference between the semi-dull low elongation elongation viscose fiber of this embodiment and embodiment 1 is: the semi-dull low elongation viscose fiber detected by random sampling in this embodiment has the following performance indicators different from embodiment 1 system:

[0086] The dry breaking strength is 3.25cN / dtex, the wet breaking strength is 1.65cN / dtex,

[0087] The strength required to produce 5% elongation in wet state is 0.65cN / dtex,

[0088] The dry elongation at break is 12.8%, and the wet elongation at break is 20%.

[0089] The crystallinity is 43%, the radial water swelling degree is 22.5%, and the matting agent content is 0.75%.

[0090] The whiteness is 84%, the linear density deviation rate is -1.5%, the residual sulfur is 5.5mg / 100g,

[0091] The length deviation rate is +2.0%, and the ultra-long fiber rate is 0.5%,

[0092] The double-length fiber is 0.95mg / 100g, and the defect is 1.0mg / 100g.

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Abstract

The invention provides a semi-dull low-elongation viscose fiber as well as a preparation method and application thereof. The viscose fiber is obtained by sequentially performing soaking, grinding, squeezing crushing, kneading, directional polymerization reduction, yellowing, dissolving, filtering, defoaming, curing, spinning drawing and after-treatment on a pulp raw material, and has an index system that the dry fracture strength is more than or equal to 3.10cN / dtex, the wet fracture strength is more than or equal to 1.60cN / dtex, the strength needed for generating 5% of the elongation in a wet state is more than or equal to 0.55cN / dtex, the dry elongation at break is 12-14.5%, and the wet fracture extensibility is 16.0-21.0%. The semi-dull high-strength viscose fiber provided by the invention is prepared by virtue of technical innovation, is a novel fiber variety which has an index system different from that of ordinary viscose fibers and Modal fibers, shows high and strong fiber characteristics, and also shows skin affinity stronger than that of cotton fibers, so that the viscose fiber can effectively replace the existing differentiation viscose fiber, the development and the industrial upgrading of downstream novel textiles can be promoted while the processability of the downstream process of the viscose fiber is improved, and the semi-dull low-elongation viscose fiber can be well applied to the field of production of jean fabrics.

Description

technical field [0001] The invention relates to the technical field of viscose fibers, in particular to a semi-dull low-elongation viscose fiber and a preparation method and application thereof. Background technique [0002] Textile fiber raw materials are mainly divided into natural fiber raw materials represented by cotton and hemp, petroleum-based fiber raw materials represented by polyester and acrylic fibers, and tencel, cupro ammonia fiber, Viscose fiber and other bio-based fiber raw materials. Cotton fiber is well-known for its comfort, softness, breathability, and close-fitting qualities. It accounts for about 36% of the total textile fiber market. The nutritional content of cotton, and the reduction of cotton planting soil area in countries all over the world to ensure the food supply of the global population have limited the cultivation of cotton, and the shortage of cotton fiber raw materials cannot meet the growing needs of people's living standards. Viscose st...

Claims

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Application Information

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IPC IPC(8): D01F2/08D01F11/02D01D5/06D01D5/12D01D10/06
Inventor 冯涛邓传东李蓉玲贺敏田启兵陈明付刘爱兵罗克胜
Owner YIBIN GRACE GROUP CO LTD
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