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Semi-dull high-strength low-elongation viscose fiber and preparation method thereof

A viscose fiber, high-strength and low-elongation technology, applied in the field of semi-matte high-strength and low-elongation viscose fiber and its preparation, can solve the problem that the development and industrial upgrading of new downstream textiles cannot be met to a greater extent, and the market share of viscose fiber is reduced. and other problems, to achieve the effect of high product strength, good color fastness of finished products, and improved product quality

Active Publication Date: 2017-09-29
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 high-strength low-elongation viscose fiber and preparation method thereof
  • Semi-dull high-strength low-elongation viscose fiber and preparation method thereof
  • Semi-dull high-strength low-elongation viscose fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The pulp raw material is sequentially soaked, ground, crushed, kneaded, depolymerized, yellowed, dissolved, filtered, defoamed, matured, matting agent is added, spinning and drawing, refining and drying to obtain semi-dull viscose. Adhesive fiber, the semi-dull high-strength low-elongation viscose adhesive fiber of the present embodiment has the following performance index system:

[0064] The fineness is 1.67 dtex, the dry breaking strength is 3.12 cN / dtex, the wet breaking strength is 1.65cN / dtex,

[0065] The strength required to produce 5% elongation in wet state is 0.55cN / dtex,

[0066] Dry elongation at break is 19.0%, wet elongation at break is 21.0%,

[0067] The crystallinity is 40%, the radial water swelling degree is 22%, and the content of matting agent is 0.1%.

[0068] The linear density deviation rate is -11.0%, the residual sulfur is 8.0mg / 100g,

[0069] The length deviation rate is -11.0%, the ultra-long fiber rate is 0.48%, and the whiteness is 84.1...

Embodiment 2

[0072] The difference between the semi-dull high-strength low-elongation viscose fiber of the present embodiment and embodiment 1 is: the present embodiment has the following indicators:

[0073] Denier is 1.52 dtex, dry breaking strength is 3.15 cN / dtex, wet breaking strength is 1.67cN / dtex,

[0074] The strength required to produce 5% elongation in wet state is 0.54cN / dtex,

[0075] The dry elongation at break is 18.9%, and the wet elongation at break is 20.8%.

[0076] The crystallinity is 40%, the radial water swelling degree is 22.5%, and the matting agent content is 0.75%.

[0077] The whiteness is 84.6%, the linear density deviation rate is -10.0%, the residual sulfur is 8.0mg / 100g,

[0078] The length deviation rate is +10.0%, and the ultra-long fiber rate is 0.5%,

[0079] The double-length fiber is 4.0mg / 100g, and the defect is 4.0mg / 100g.

Embodiment 3

[0081] In order to better implement the present invention, this embodiment further provides the semi-dull high-strength low-elongation viscose fiber of the present invention and its preparation method, and measures the performance index.

[0082] Semi-dull high-strength low-elongation viscose fiber and its preparation method: the pulp raw material is soaked and pressed to remove the lye to obtain alkali cellulose; the prepared alkali cellulose is crushed, kneaded, and polymerized to remove the lye to obtain Methyl cellulose; the obtained methyl cellulose is yellowed to obtain cellulose sulfonate; the obtained cellulose sulfonate is dissolved in a solvent, filtered, matured, defoamed, and a spinning solution is obtained; After adding matting agent, the spinning solution is sent to spinning machine for spinning and drafting to obtain tow, and the tow is refined and dried to obtain viscose fiber of the present invention. Samples were taken, and each index was measured according t...

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Abstract

The invention provides a semi-dull, high-strength, low-elongation viscose fiber and a preparation method thereof. The viscose fiber is prepared by impregnating pulp raw materials, grinding, crushing, kneading, depolymerizing, yellowing, dissolving, and filtering in sequence. , defoaming, ripening, spinning and drawing, and post-treatment. The viscose fiber has the following indicators: fineness 1.11-1.67dtex, dry breaking strength ≥ 3.10 cN / dtex, wet breaking strength ≥ 1.60cN / dtex, The strength required to produce 5% elongation in wet state is ≥0.55cN / dtex, and the dry elongation at break is 11.0-19.0%. The high-strength and low-elongation viscose fiber involved in the present invention is a new type of fiber achieved through technological innovation. It has an index system different from ordinary viscose fiber and modal fiber, and its products not only show the high-strength, low-elongation fiber characteristics of modal fiber , it also shows stronger skin-friendly properties than cotton fibers, which can effectively replace the existing differentiated viscose fibers. While improving the processing performance of viscose fibers in downstream processes, it can also promote the development and industrialization of downstream new textiles upgrade.

Description

technical field [0001] The invention relates to the technical field of viscose fiber, in particular to a semi-dull high-strength low-elongation viscose fiber and a preparation method 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 stapl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F2/12D01D5/12D01D5/06D06M11/53D06M11/76D06L4/13
Inventor 冯涛邓传东李蓉玲贺敏黄艺陈明付李殿洪
Owner YIBIN GRACE GROUP CO LTD
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